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Document Number: 336521 - 001

Desktop Platform Form Factors Power Supply Design Guide

Revision 001

September 2017

2 336521 - 001

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Contents 1 Introduction ...................................................................................................... 8

1.1 Reference Documentation ...................................................................... 11 1.2 Terminology ......................................................................................... 12

2 Processor Configurations .................................................................................. 14 2.1 Processor Configurations - RECOMMENDED .............................................. 14

3 Electrical ........................................................................................................ 15 3.1 AC Input - REQUIRED ............................................................................ 15

3.1.1 Input Over Current Protection – REQUIRED ................................. 15 3.1.2 Inrush Current – REQUIRED ...................................................... 15 3.1.3 Input Under Voltage – REQUIRED .............................................. 15

3.2 DC Output - REQUIRED ......................................................................... 16 3.2.1 DC Voltage Regulation – REQUIRED ........................................... 16 3.2.2 DC Output Current – REQUIRED ................................................ 16 3.2.3 Remote Sensing - RECOMMENDED ............................................. 17 3.2.4 Other Low Power System Requirements - RECOMMENDED ............ 17 3.2.5 Output Ripple Noise - REQUIRED ............................................... 18 3.2.6 Capacitive Load – RECOMMENDED ............................................. 19 3.2.7 Closed Loop Stability - REQUIRED .............................................. 19 3.2.8 +5V DC / +3.3V DC Power Sequencing - REQUIRED .................... 20 3.2.9 Voltage Hold-up Time - REQUIRED............................................. 20 3.2.10 12V2 DC Minimum Loading - REQUIRED ..................................... 20

3.3 Timing, Housekeeping and Control – REQUIRED ....................................... 21 3.3.1 PWR_OK – REQUIRED .............................................................. 22 3.3.2 Power-up Cross Loading Condition – REQUIRED .......................... 22 3.3.3 PS_ON# – REQUIRED .............................................................. 23 3.3.4 +5VSB – REQUIRED ................................................................. 24 3.3.5 Power-on Time – REQUIRED ..................................................... 24 3.3.6 Rise Time – REQUIRED ............................................................. 24 3.3.7 Overshoot at Turn-on / Turn-off – REQUIRED .............................. 25

3.4 Reset after Shutdown ............................................................................ 25 3.4.1 +5VSB at Power-down – REQUIRED ........................................... 25 3.4.2 +5VSB Fall Time - RECOMMENDATION ....................................... 26

3.5 Output Protection .................................................................................. 26 3.5.1 Over Voltage Protection (OVP) – REQUIRED ................................ 26 3.5.2 Short Circuit Protection (SCP) – REQUIRED ................................. 27 3.5.3 No-load Situation – REQUIRED .................................................. 27 3.5.4 Over Current Protection (OCP) – REQUIRED ................................ 27 3.5.5 Over Temperature Protection (OTP) – REQUIRED ......................... 27 3.5.6 Output Bypass – REQUIRED ...................................................... 27 3.5.7 Separate Current Limit for 12V2 - RECOMMENDED ...................... 27 3.5.8 Overall Power Supply Efficiency Levels ....................................... 28 3.5.9 Power Supply Efficiency for Energy Regulations - ENERGY STAR* and

CEC (California Energy Commission) PC Computers with High Expandability Score - RECOMMENDED ........................................ 28

4 Mechanical ...................................................................................................... 30

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4.1 Labeling and Marking - RECOMMENDED ................................................... 30 4.2 Connectors - REQUIRED ........................................................................ 30

4.2.1 AC Connector .......................................................................... 30 4.2.2 DC Connectors ........................................................................ 30

4.3 Airflow and Fans - RECOMMENDED ......................................................... 35 4.3.1 Fan Location and Direction ........................................................ 35 4.3.2 Fan Size and Speed ................................................................. 35 4.3.3 Venting .................................................................................. 35

5 Acoustics ........................................................................................................ 37 5.1 Acoustics – RECOMMENDED ................................................................... 37

6 Environmental ................................................................................................. 38 6.1 Temperature – RECOMMENDED .............................................................. 38 6.2 Thermal Shock (Shipping) ...................................................................... 38 6.3 Humidity – RECOMMENDED .................................................................... 38 6.4 Altitude – RECOMMENDED ..................................................................... 38 6.5 Mechanical Shock – RECOMMENDED ....................................................... 38 6.6 Random Vibration – RECOMMENDED ....................................................... 38

7 Electromagnetic Compatibility ........................................................................... 40 7.1 Emissions – REQUIRED .......................................................................... 40 7.2 Immunity - REQUIRED .......................................................................... 40 7.3 Input Line Current Harmonic Content - OPTIONAL..................................... 40 7.4 Magnetic Leakage Field - REQUIRED ........................................................ 40 7.5 Voltage Fluctuations and Flicker – REQUIRED ........................................... 41

8 Safety ............................................................................................................ 42 8.1 North America – REQUIRED ................................................................... 42 8.2 International – REQUIRED ...................................................................... 42 8.3 Proscribed Materials .............................................................................. 43 8.4 Catastrophic Failure Protection - RECOMMENDED ...................................... 43

9 Reliability ....................................................................................................... 44 9.1 Reliability - RECOMMENDED ................................................................... 44

10 CFX12V Specific Guidelines 1.6.......................................................................... 45 10.1 Physical Dimensions – REQUIRED ........................................................... 45

11 LFX12V Specific Guidelines 1.4 .......................................................................... 46 11.1 Physical Dimensions - REQUIRED ............................................................ 46

12 ATX12V Specific Guidelines 2.5 ......................................................................... 49

13 SFX12V Specific Guidelines 3.4 .......................................................................... 51 13.1 Lower Profile Package - Physical Dimensions - REQUIRED .......................... 51 13.2 Fan Requirements - REQUIRED ............................................................... 51 13.3 Top Fan Mount Package - Physical Dimensions -REQUIRED ........................ 53 13.4 Fan Requirements - REQUIRED ............................................................... 53 13.5 Reduced Depth Top Mount Fan - Physical ................................................. 55 13.6 Fan Requirements - REQUIRED ............................................................... 55 13.7 Standard SFX Profile Package – Physical Dimensions - REQUIRED ............... 56 13.8 Fan Requirements - REQUIRED ............................................................... 57 13.9 PS3 Form Factor- Physical Dimensions - REQUIRED .................................. 58

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13.10 Fan Requirements - REQUIRED ............................................................... 58

14 TFX12V Specific Guidelines 2.5 .......................................................................... 60 14.1 Physical Dimensions - REQUIRED ............................................................ 60 14.2 Mounting Options - RECOMMENDED ........................................................ 62 14.3 Chassis Requirements - RECOMMENDED .................................................. 63

15 Flex ATX Specific Guidelines 1.2 ........................................................................ 65 15.1 Physical Dimensions – REQUIRED ........................................................... 65

16 Appendix: Test Plan ........................................................................................ 67 16.1 Test Plan Introduction ........................................................................... 67 16.2 Processor Specific Tests ......................................................................... 68

16.2.1 12V2 Peak Loading Test - RECOMMENDED .................................. 68 16.2.2 12V2 Load 16A Continue - RECOMMENDED ................................. 69 16.2.3 12V2 Min Load 0A - RECOMMENDED .......................................... 70

16.3 Electrical .............................................................................................. 71 16.3.1 AC Line Regulation – REQUIRED ................................................ 71 16.3.2 Load / Cross Regulation – REQUIRED ......................................... 72 16.3.3 Efficiency – Main Rails On (ENERGY STAR* and CEC) ................... 74 16.3.4 Efficiency – 5VSB [Europe (ErP Lot 3/6) and Alternative Sleep Mode

(ASM)] ................................................................................... 76 16.3.5 Power Factor ........................................................................... 77 16.3.6 Ripple and Noise Test – REQUIRED ............................................ 78 16.3.7 Dynamic Load – REQUIRED ....................................................... 79

16.4 Timing ................................................................................................. 85 16.4.1 Timing – T0 to T6 – REQUIRED ................................................. 85 16.4.2 +12VDC/+5VDC/+3.3VDC Power Sequencing Test – REQUIRED .... 86 16.4.3 Hold Up Time – REQUIRED ....................................................... 87

16.5 Output Protection .................................................................................. 87 16.5.1 Short Circuit Protection (SCP) – REQUIRED ................................. 87 16.5.2 Over Current Protection (OCP) – REQUIRED ................................ 88 16.5.3 Energy Hazard Safety Criteria (240VA) - RECOMMENDED ............. 89

16.6 Test Plan Tables and Test Criteria - RECOMMENDED .................................. 90 16.7 Intel Test Lab Test Equipment - OPTIONAL .............................................. 92

Figures

Figure 1. Differential Noise Test Setup ................................................................ 19 Figure 2. Power Supply Timing .......................................................................... 20 Figure 3. Power Supply Timing .......................................................................... 21 Figure 4. PS_ON# Signal Characteristics ............................................................. 23 Figure 5. Rise Time Characteristics .................................................................... 25 Figure 6. 5VSB Fall Time ................................................................................... 26 Figure 7. Connectors (Pin-side view, not to Scale) ............................................... 31 Figure 8. Serial ATA* Power Connector ............................................................... 35 Figure 9. CFX12V Mechanical Outline.................................................................. 45 Figure 10. Mechanical Outline ............................................................................ 46 Figure 11. Mechanical Details ............................................................................ 47 Figure 12. PSU Slot Feature Detail ..................................................................... 47 Figure 13. Recommended Chassis Tab Feature .................................................... 48

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Figure 14. Power Supply Dimensions for Chassis that does not Require Top Venting 49 Figure 15. Power Supply Dimensions for Chassis that Require Top Venting.............. 50 Figure 16. 40 mm Profile Mechanical Outline ....................................................... 52 Figure 17. Chassis Cutout ................................................................................. 52 Figure 18. Top Mount Fan Profile Mechanical Outline ............................................ 54 Figure 19. Chassis Cutout ................................................................................. 55 Figure 20. Recessed Fan Mounting ..................................................................... 55 Figure 21. Reduced Depth Top Mount Fan Profile Mechanical Outline ...................... 56 Figure 22. Chassis Cutout ................................................................................. 56 Figure 23. 60 mm Mechanical Outline ................................................................. 57 Figure 24. Chassis Cutout ................................................................................. 58 Figure 25. PS3 Mechanical Outline ..................................................................... 59 Figure 26. Mechanical Outline ............................................................................ 60 Figure 27. Dimensions and Recommended Feature Placements (Not to Scale) ......... 61 Figure 28. Power Supply Mounting Slot Detail ..................................................... 62 Figure 29. Fan Right and Fan Left Orientations of Power Supply in a Chassis ........... 63 Figure 30. Suggested TFX12V Chassis Cutout ...................................................... 63 Figure 31. Suggested Mounting Tab (Chassis Feature) .......................................... 64 Figure 32. Mechanical Outline ............................................................................ 65 Figure 33. Dimensions and Recommended Feature Placements (Not to Scale) ......... 66

Tables

Table 1. Conventions and Terminology ............................................................... 12 Table 2. Support Terminology ........................................................................... 13 Table 3. 12V2 Current for Processor Configurations .............................................. 14 Table 4. AC Input Line Requirements ................................................................. 15 Table 5. DC Output Voltage Regulation ............................................................... 16 Table 6. DC Output Transient Step Sizes ............................................................ 16 Table 7. Recommended System DC and AC Power Consumption ............................ 18 Table 8. DC Output Noise/Ripple ........................................................................ 18 Table 9. Output Capacitive Loads ....................................................................... 19 Table 10. 12V2 DC Minimum Current ................................................................. 20 Table 11. Power Supply Timing .......................................................................... 21 Table 12. PWR_OK Signal Characteristics ............................................................ 22 Table 13. PS_ON# Signal Characteristics ............................................................ 23 Table 14. Over Voltage Protection ...................................................................... 26 Table 15. Efficiency Versus Load Minimum Requirements and Recommendations ..... 28 Table 16. Efficiency Versus Load for ENERGY STAR* ............................................ 28 Table 17. Efficiency Versus Load for CEC PC Computers with High Expandability

Computers^ ............................................................................................. 28 Table 18. Main Power Connector Pin-out ............................................................. 32 Table 19. Peripheral Connector Pin-out ............................................................... 32 Table 20. Floppy Connector Pin-out .................................................................... 33 Table 21. PCI-E Graphics Card 6 Pin Connector Pin-out ........................................ 33 Table 22. PCI-E Graphics Card 8 Pin (6+2) Connector Pin-out ............................... 33 Table 23. +12 V Power 4 Pin Connector Pin-out ................................................... 34 Table 24. +12 V Power 8 Pin Connector Pin-out ................................................... 34 Table 25. Serial ATA* Power Connector Pin-out ................................................... 34 Table 26. Recommended Power Supply Acoustic Targets ...................................... 37 Table 27. EMC Requirement by Country .............................................................. 40 Table 28. DC Load Voltage Ranges ..................................................................... 67

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Table 29. PSU 12V2 (CPU) Continuous and Peak Current Recommendations ........... 69 Table 30. 12V2 Peak Load Test Scenarios ........................................................... 69 Table 31. 12V2 Load 16A Continuous Test Scenarios ............................................ 70 Table 32. 12V2 Min Load 0A Test Scenarios ........................................................ 70 Table 33. DC Load Voltage Ranges ..................................................................... 71 Table 34. AC Line Regulation Test Scenarios ....................................................... 71 Table 35. Load / Cross Regulation Test Scenarios – REQUIRED .............................. 72 Table 36. Load / Cross Regulation Test Scenarios – New (RECOMMENDATION) ....... 74 Table 37. Example Efficiency Table from Test Report – 115V ................................. 75 Table 38. Example Efficiency Table from Test Report – 230V ................................. 76 Table 39. 5VSB Efficiency Targets and Test Scenarios .......................................... 77 Table 40. Power Factor during Efficiency Testing .................................................. 78 Table 41. Ripple and Noise Pass Criteria ............................................................. 78 Table 42. Ripple and Noise Test Scenarios .......................................................... 79 Table 43. Dynamic Load Test Conditions ............................................................. 80 Table 44. 115V/60Hz @ 50 Hz Dynamic Load Test Scenarios ................................. 81 Table 45. 230V/50Hz @ 50 Hz Dynamic Load Test Scenarios ................................. 82 Table 46. 115V/60Hz @ 10 kHz Dynamic Load Test Scenarios ............................... 83 Table 47. 230V/50Hz @ 10 kHz Dynamic Load Test Scenarios ............................... 84 Table 48. Timing (T0 to T6) Pass Criteria ............................................................ 85 Table 49. Timing (T0 to T6) Test Scenarios – (Gray Boxes no Pass Criteria) ............ 85 Table 50. 12VDC/5VDC/3.3VDC Power Sequencing Test Scenarios ......................... 87 Table 51. Hold Up Time Test Scenarios ............................................................... 87 Table 52. Short Circuit Protection Test Scenarios ................................................. 88 Table 53. Over Current Protection Test Scenarios ................................................ 89 Table 54. DC Load Current Values to Reach 240VA .............................................. 89 Table 55. Energy Hazard Safety Criteria (240VA) Test Scenarios ........................... 90 Table 56. Test Plan Tables and Test Criteria – 300 Watt ....................................... 90 Table 57. Test Plan Tables and Test Criteria – 350 Watt ....................................... 90 Table 58. Test Plan Tables and Test Criteria – 400 Watt ....................................... 91 Table 59. Test Plan Tables and Test Criteria – 450 Watt ....................................... 91 Table 60. Intel® Test Lab Test Equipment .......................................................... 92

§§

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Revision History Revision Number

Description Revision Date

0.5 • Initial release of combined power supply design guide• Combined CFX12V, LFX12V, ATX12V, SFX12V, and TFX12V

content into one desktop power supply design guide• CFX12V content derived from revision 1.2

Updated 12V1 current for 300 W configuration Updated efficiency loading for 300 W configuration

• LFX12V content derived from revision 1.1• ATX12V content derived from revision 2.2• SFX12V content derived from revision 3.1• TFX12V content derived from revision 2.1

Updated 12V1 current for 300 W configuration Updated efficiency loading for 300 W configuration

• Updated Capacitive Load section to use standard capacitorvalues

• Updated 5 VSB efficiency recommendations for Digital Officeplatforms

• Removed power-down warning from power supply timingdiagram

• Marked sections with labels to indicate REQUIRED,RECOMMENDED, or OPTIONAL items

January 2006

1.0 • Added 12V2 Current for Processor Configurations table• Added revision numbers to form factor specific chapters

June 2006

1.1 • Removed outdated ENERGY STAR* requirements and addedsome new ENERGY STAR information.

• Updated Typical Power Distribution tables for all power supplyform factors and updated minimum loads.

• Updated cross regulation figures.• Added Flex ATX power supply form factor.• Updated capacitive loading table.• Clarified over voltage and over current verbiage.• Added Power-up Cross Loading Condition section.• Other changes shown in red with change bars.

March 2007

1.2 • 3.3.1 and Added max of 400 mV Ripple/Noise to PS_ON andPWR_OK signals

• 14.2 Figure 49 replaced to implement change in dimension C• 3.3 Added Power-down timing to Figure 2 and Table 20 (T6 >

1 ms)• 7.3 Clarified Class D requirements. Added additional references

for EMC requirements by country• 3.5.9 Added Climate Savers Computing text• Updated all Cross-regulation graphs

February 2008

336521 - 001 9

• 2.0 updated configuration charts• Removed dates from reference documentation. Refer to latest

version available• Updated figure 58

1.3 • Updated 3.2.3 Remote sensing to recommended level• Added 3.2.10 12 V2DC Minimum Loading Recommendation• Added 3.4.2 +5 VSB Fall time Recommendation• Updated 3.2.9 Voltage Hold-up Time• Updated 3.5.8 Overall Power Supply Efficiency and ENERGY

STAR• Changed Floppy Drive Connector to OPTIONAL level• Changed 4.2.2.6 Serial ATA Connectors to Required level• Update Table 3 12V2 Current for Processor Configurations• Updated Table 5 DC Output Voltage Regulation -12V to

recommended level• Updated Table 7 Recommended System DC and AC power

consumption• Updated Table 11 Power Supply Timing recommended value• Updated Table 16 Efficiency versus Load

July 2012

1.31 • Updated Table 7 Recommended System DC and AC powerconsumption

• Changed 3.2.10 12 V2DC Minimum Loading to REQUIRED• Updated 3.3.6 Rise Time• Updated

CFX12V Specific Guidelines to version 1.5 LFX12V Specific Guidelines to version 1.3 ATX12V Specific Guidelines to version 2.4 SFX12V Specific Guidelines to version 3.3 TFX12V Specific Guidelines to version 2.4 Flex ATX Specific Guidelines to version 1.1

April 2013

1.4 • Updated 1.2, Table 1 with new terminology• Updated 2.1 peak & sustain current requirements• Updated 3.1 Table 4 – removed lin (Current in Limit)• Updated 3.2.2, Table 6 – 12V1 and 12V2 new step size, added

12V3/4 step size• Updated 3.2.4 - low power 5VSB efficiency• Updated 3.2.6, Table 9 – Decoupling cap values were changed• Added Figure 2 in Section 3.2.8• Updated 3.2.10, Table 10 – 12V2 recommendation is now

required• Updated 3.3, figure 3 now shows T0, Timing requirements T1 &

T3 added for ASM and note about timing requirements in theyear 2020

• Updated 3.3.4 to provide recommendation to increase currenton 5VSB for computers with ASM

• Added Figure 5 in section 3.3.6 for more clarity• Updated 3.4.1 5VSB fall time as recommendation and loading

conditions used in the test plan• Re-wrote 3.5.8 section for overall efficiency targets

June 2017

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• Re-wrote 3.5.9 section to include Efficiency recommendationsfor current Energy Regulations

• Updated 4.1 to include labeling instructions for which DGtimings are supported by the PSU

• Updated section 4.2.2.3 Floppy Drive Connector to bereference only

• Added Section 4.2.2.4 for PCI-E Graphics Card connector• Updated 4.2.2.5, added Table 24 - +12V power 8 pin

connector pin out• Updated 5.1 – Acoustic note about acoustic targets can be

customer specific• Sections 10 - 15 Added form factor revision summary to

beginning of each form factor specific section• Added new Section 16 – Intel Test Plan

§ §

Introduction

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1 Introduction This document provides design suggestions for various power supply form factors. The power supplies are primarily intended for use with desktop system designs. It should not be inferred that all power supplies must conform exactly to the content of this document, though there are key parameters that define mechanical fit across a common set of platforms. Since power supply needs vary depending on system configuration, the design specifics described are not intended to support all possible systems. The required sections are intended to be followed for all systems where the recommended sections could be modified based on system design.

1.1 Reference Documentation The following documents are referenced in various sections of this design guide. For guidelines not specifically mentioned here, refer the appropriate document.

Document Document Number /Source

European Association of Consumer Electronics Manufacturers (EACEM*) Hazardous Substance List / Certification

AB13-94-146

IEEE* Recommended Practice on Surge Voltages in Low-Voltage AC Circuits ANSI* C62.41-1991

IEEE* Guide on Surge Testing for Equipment Connected to Low-Voltage AC Power Circuits ANSI* C62.45-1992

Nordic national requirement in addition to EN 60950 EMKO-TSE (74-SEC) 207/94

American National Standard for Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz for EMI testing

ANSI C63.4

Introduction

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Document Document Number /Source

UL 60950-1 First Edition –CAN/CSA-C22.2 No. 60950-1-03 First Edition, IEC 60950-1: 2001 + Amendments and National Deviations, EN 60950-1: 2001 + Amendment A11: EU Low Voltage Directive (73/23/EEC) (CE Compliance) GB-4943 (China) CNS 14336: (Taiwan BSMI) FCC*, Class B, Part 15 (Radiated and Conducted Emissions) CISPR* 22 / EN55022, 5th Edition (Radiated and Conducted Emissions) EN55024 (ITE Specific Immunity) EN 61000-4-2 – Electrostatic Discharge EN 61000-4-3– Radiated RFI Immunity EN 61000-4-4– Electrical Fast Transients EN 61000-4-5 – Electrical Surge EN 61000-4-6 – RF Conducted EN 61000-4-8 – Power Frequency Magnetic Fields EN 61000-4-11 – Voltage Dips, Short Interrupts and Fluctuations EN61000-3-2 (Harmonics) EN61000-3-3 (Voltage Flicker) EU EMC Directive ((8/9/336/EEC) (CE Compliance) IEC 62368

1.2 Terminology Table 1 defines the acronyms, conventions, and terminology that are used throughout the design guide.

Table 1. Conventions and Terminology

Acronym, Convention/ Terminology Description

ASM Alternative Sleep Mode, ASM replaces the traditional Sleep Mode (ACPI S3) with a new sleep mode. An example of ASM is with Microsoft* Modern Standby* or Lucid Sleep with Google* Chrome*

AWG American Wire Gauge

BA Declared sound power, LwAd. The declared sound power level shall be measured according to ISO* 7779 for the power supply and reported according to ISO 9296.

CFM Cubic Feet per Minute (airflow).

Monotonically A waveform changes from one level to another in a steady fashion, without oscillation.

MTBF Mean time between failure.

Introduction

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Acronym, Convention/ Terminology Description

Noise The periodic or random signals over frequency band of 0 Hz to 20 MHz.

Non-ASM Computers that do not use Alternative Sleep Mode use traditional Sleep Mode (ACPI S3).

Overcurrent A condition in which a supply attempts to provide more output current than the amount for which it is rated. This commonly occurs if there is a "short circuit" condition in the load attached to the supply.

PFC Power Factor Correction.

p-p Peak to Peak Voltage Measurement

PWR_OK PWR_OK is a “power good” signal used by the system power supply to indicate that the +5VDC, +3.3 VDC and +12VDC outputs are above the under voltage thresholds of the power supply.

Ripple noise The periodic or random signals over a frequency band of 0 Hz to 20 MHz.

Rise Time Rise time is defined as the time it takes any output voltage to rise from 10% to 90% of its nominal voltage.

Surge The condition where the AC line voltage rises above nominal voltage.

VSB or Standby Voltage An output voltage that is present whenever AC power is applied to the AC inputs of the supply.

Table 2. Support Terminology

Category Description

Optional The status given to items within this design guide, which are not required to meet design guide, however, some system applications may optionally use these features. May be a required or recommended item in a future design guide.

Recommended The status given to items within this design guide, which are not required to meet design guide, however, are required by many system applications. May be a required item in a future design guide.

Required The status given to items within this design guide, which are required to meet design guide and a large majority of system applications.

§ §

Processor Configurations

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2 Processor Configurations

2.1 Processor Configurations - RECOMMENDED Table 3 shows various processor configurations for 12V2 current recommendation.

Table 3. 12V2 Current for Processor Configurations

PSU 12V2

Capability Recommendations

Processor TDP

Continuous Current

Peak Current

95W 16A 18A

80W 14A 18A

65W 14A 18A

35W 10A 13.5A

Reference equation for 12V2 capability calculation:

12V2 Peak Current = (SoC Peak Power/ VR efficiency)/11.4V

12V2 Sustain Current = (SoC sustain power / VR efficiency)/11.4V

Note: PSU rail voltage is 11.4V, 12V2 should be able to supply peak current for 10 ms.

Motherboard VR efficiency is 85% at TDC and 80% at SoC peak power (AKA IccMax)

Motherboard plane resistance is 1.2mOhm

§ §

Electrical

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3 Electrical The following electrical requirements are required and must be met over the environmental ranges as defined in Section 6 (unless otherwise noted).

3.1 AC Input - REQUIRED Table 4 lists AC input voltage and frequency requirements for continuous operation. The power supply shall be capable of supplying full-rated output power over two input voltage ranges rated 100-127 VAC and 200-240 VAC rms nominal. The correct input range for use in a given environment may be either switch-selectable or auto-ranging. The power supply shall automatically recover from AC power loss. The power supply must be able to start up under peak loading at 90 VAC.

Note: OPTIONAL - 115 VAC or 230 VAC only power supplies are an option for specific geographical or other requirements.

Table 4. AC Input Line Requirements

Parameter Minimum Nominal1 Maximum Unit

Vin (115 VAC) 90 115 135 VACrms

Vin (230VAC) 180 230 265 VACrms

Vin Frequency 47 - 63 Hz

NOTE: Nominal voltages for test purposes are considered to be within ±1.0 V of nominal.

3.1.1 Input Over Current Protection – REQUIRED

The power supply is required to incorporate primary fusing for input over current protection to prevent damage to the power supply and meet product safety requirements. Fuses should be slow-blow-type or equivalent to prevent nuisance trips.

3.1.2 Inrush Current – REQUIRED

Maximum inrush current from power-on (with power-on at any point on the AC sine) and including, but not limited to, three line cycles, shall be limited to a level below the surge rating of the AC switch if present, bridge rectifier, and fuse components.Repetitive ON/OFF cycling of the AC input voltage should not damage the power supply or cause the input fuse to blow.

3.1.3 Input Under Voltage – REQUIRED

The power supply is required to contain protection circuitry such that the application of an input voltage below the minimum specified in Table 4, shall not cause damage to the power supply.

Electrical

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3.2 DC Output - REQUIRED

3.2.1 DC Voltage Regulation – REQUIRED

The DC output voltages are required to remain within the regulation ranges shown in Table 5, when measured at the load end of the output connectors under all line, load, and environmental conditions specified in Chapter 6.

Table 5. DC Output Voltage Regulation

Output Range Min Nom Max Unit

+12V1DC1 ±5% +11.40 +12.00 +12.60 V

+12V2DC2 ±5% +11.40 +12.00 +12.60 V

+5VDC ±5% +4.75 +5.00 +5.25 V

+3.3VDC3 ±5% +3.14 +3.30 +3.47 V

-12VDC4 ±10% -10.80 -12.00 -13.20 V

+5VSB ±5% +4.75 +5.00 +5.25 V

NOTES: 1. At +12V1DC peak loading, regulation at the +12V1DC and +12V2DC outputs can go to

±5%.2. At +12V2DC peak loading, regulation at the +12V1DC and +12V2DC outputs can go to

±5%3. Voltage tolerance is required at main connector and SATA connector (if used)4. -12VDC output is optional

3.2.2 DC Output Current – REQUIRED

Table 6 summarizes the expected output transient step sizes for each output. The transient load slew rate is = 1.0 A/μs. All items in the below table are REQUIRED, unless specifically called out as RECOMMENDED.

Table 6. DC Output Transient Step Sizes

Output Maximum Step Size

(% of Rated Output amps) Maximum Step Size (A)

+12V1DC 40% (Required) 70% (Recommended) -

+12V2DC 85% -

+12V3/4 80% (Recommended)

+5VDC 30% -

+3.3VDC 30% -

-12VDC - 0.1

+5VSB - 0.5

Electrical

336521 - 001 17

NOTES: 1. For example, for a rated +5 VDC output of 14A, the transient step would be2. 30% x 14 A = 4.2 A.3. The numbers are based on the 7th gen Intel® Core™ Desktop CPU family, subjected to

change, contact your Intel representative for the up to date CPU electrical specificationmax step size of the CPUs will be assembled for system integration

4. 12V3/V4 rails are typically used for PCI-E Graphic card connectors. Some powersupplies use one large 12V rail or other configurations. This recommendation comesfrom Graphics card recommendations and should be applied to the amount of currentof the 12V rails associated with the graphic card connections. This is not an Intelrequirement and so it will be treated as a recommendation during testing.

Output voltages should remain within the regulation limits of Table 5, for instantaneous changes in load as specified in Table 6 and for the following conditions:

• Simultaneous load steps on the +12 VDC, +5 VDC, and +3.3 VDC outputs (allsteps occurring in the same direction)

• Load-changing repetition rate of 50 Hz to 10 kHz

• AC input range per Section 2.1 and Capacitive loading per Table 9

3.2.3 Remote Sensing - RECOMMENDED

Remote sensing is defined as recommended level and can accurate control at motherboard loads by adding to PSU connector. The +3.3 VDC output should have provisions for remote sensing to compensate for excessive cable drops. In low power PSU, remote sensing is recommended. The default sense should be connected to pin 13 of the main power connector - Figure 7. The power supply should draw no more than 10 mA through the remote sense line to keep DC offset voltages to a minimum.

3.2.4 Other Low Power System Requirements - RECOMMENDED

To help meet the Blue Angel* system requirements, RAL-UZ 78, US Presidential executive order 13221, ENERGY STAR*, ErP Lot6 requirements, and other low Power system demands, it is recommended that the +5VSB standby supply power consumption should be as low as possible. In order to meet the 2010 and 2013 ErP Lot 6 requirements, 2014 ErP Lot 3 requirements, and if any Computers use an Alternative Sleep Mode (ASM) then the 5V standby efficiency should be met as shown in Table 7 which is measured with the main outputs off (PS_ON# high state).

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Table 7. Recommended System DC and AC Power Consumption

5VSB

Load Target

5VSB

Actual Load Efficiency Target

(both 115V and 230V input) Remark

Max / Label 3.0A /Label 75% Recommend

1.5 A 75% ASM and ErP Lot 3 2014

1.00 A 75% Recommend

0.55 A 75% ASM and ErP* Lot 3 2014

90 mA 45% ErP* Lot 6 2010

45 mA 45% ErP* Lot 6 2013

3.2.5 Output Ripple Noise - REQUIRED

The output ripple noise requirements listed in Table 8 should be met throughout the load ranges specified for the appropriate form factor and under all input voltage conditions as specified in Table 4

Ripple and noise are defined as periodic or random signals over a frequency band of 10 Hz to 20 MHz. Measurements shall be made with an oscilloscope with 20 MHz of bandwidth. Outputs should be bypassed at the connector with a 0.1μF ceramic disk capacitor and a 10 μF electrolytic capacitor to simulate system loading. Refer Figure 1 for the differential noise measurement setup.

Table 8. DC Output Noise/Ripple

Output Maximum Ripple and Noise (mV p-p)

+12V1DC 120

+12V2DC 120

+5VDC 50

+3.3VDC 50

-12VDC 120

+5VSB 50

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Figure 1. Differential Noise Test Setup

3.2.6 Capacitive Load – RECOMMENDED

The power supply should be able to power up and operate with the regulation limits defined in Table 5, with the following capacitances simultaneously present on the DC outputs.

Table 9. Output Capacitive Loads

Output Capacitive Load (μF)

+12V1DC 3,300

+12V2DC 3,300

+5VDC 3,300

+3.3VDC 3,300

-12VDC 330

+5VSB 3,300

3.2.7 Closed Loop Stability - REQUIRED

The power supply shall be unconditionally stable under all line/load/transient load conditions including capacitive loads specified in Section 3.2.6. A minimum of 45 degrees phase margin and 10 dB gain margin is recommended at both the maximum and minimum loads.

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20 336521 - 001

3.2.8 +5V DC / +3.3V DC Power Sequencing - REQUIRED

The +12V1 DC / +12V2 DC and +5 VDC output levels must be equal to or greater than the +3.3 VDC output at all times during power-up and normal operation. The time between any output of +12V1 DC / +12V2 DC and +5 VDC reaching its minimum in-regulation level and +3.3 VDC reaching its minimum in-regulation level must be ≤ 20 ms as shown in Figure 2.

Figure 2. Power Supply Timing

3.2.9 Voltage Hold-up Time - REQUIRED

The power supply should maintain output regulations per Table 5 despite a loss of input power at the low-end nominal range-115 VAC / 47 Hz or 230 VAC / 47 Hz – at maximum continuous output load as applicable for a minimum of 17ms (T5+T6)

3.2.10 12V2 DC Minimum Loading - REQUIRED

The power supply +12 V2DC should maintain output regulations per Table 5 and meet minimum current values below.

Table 10. 12V2 DC Minimum Current

Output Minimum Current

(A)

+12V2 DC 0A (Required)

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Output Minimum Current

(A)

+12V1 DC 0 (recommended)

3.3 Timing, Housekeeping and Control – REQUIRED Figure 3. Power Supply Timing

Table 11. Power Supply Timing

Parameter Description

Value

Required Recommended for

Non-alternative Sleep Mode

Recommended for

Alternative Sleep Mode

T0 AC power on time <2s - -

T1 Power-on time < 500ms < 200ms <150ms

T2 Rise time 0.2 – 20 ms - -

T3 PWR_OK delay 100* – 500 ms 100ms* – 250 ms 100ms* – 150ms

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Value

Required Recommended for


Recommended for


T4 PWR_OK rise time < 10 ms - -

T5 AC loss to

PWR_OK hold-up time

> 16 ms - -

T6 PWR_OK inactive to DC loss delay > 1 ms - -

NOTES: 1. Value in the recommended column for recommend (non-ASM) to be required in year

2020.2. T3 minimum must not faster than 100ms. All design tolerance must be considered to

avoid T3 faster than 100ms.3. T5 to be defined for both max/min load condition

3.3.1 PWR_OK – REQUIRED

PWR_OK is a “power good” signal. This signal should be asserted high by the power supply to indicate that the +12 VDC, +5 VDC, and +3.3 VDC outputs are within the regulation thresholds listed in Table 5 and that sufficient mains energy is stored by the converter to guarantee continuous power operation within specification for at least the duration specified in Section 3.2.9. Conversely, PWR_OK should be de-asserted to a low state when any of the +12 VDC, +5 VDC, or +3.3 VDC output voltages falls below it’s under voltage threshold, or when mains power has been removed for a time sufficiently long such that power supply operation cannot be guaranteed. The electrical and timing characteristics of the PWR_OK signal are given in Table 12.

PSU are required to label or tag PSU DG revision compliance to reflect the timing supported.

Table 12. PWR_OK Signal Characteristics

Signal Type +5 V TTL compatible

Logic level low < 0.4 V while sinking 4 mA

Logic level high Between 2.4 V and 5 V output while sourcing 200 μA

High state output impedance 1 kΩ from output to common

Max Ripple/Noise 400 mV p-p

3.3.2 Power-up Cross Loading Condition – REQUIRED

In the time frame between PS_ON# assertion and PWR_OK assertion (T1+T3), the power supply may be subjected to a cross load condition on the 12 V and 3.3/5 V rails. The power supply should be able to successfully power-up and assert PWR_OK when 12 V (or combination of 12V1 and 12V2) is loaded to ≤ 0.1 A and 3.3 V and/or 5 V are loaded to 0-5 A.

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336521 - 001 23

3.3.3 PS_ON# – REQUIRED

PS_ON# is an active-low, TTL-compatible signal that allows a motherboard to remotely control the power supply in conjunction with features such as soft on/off, Wake on LAN*, or wake-on-modem. When PS_ON# is pulled to TTL low, the power supply should turn on the four main DC output rails: +12 VDC, +5 VDC, +3.3 VDC, and -12 VDC. When PS_ON# is pulled to TTL high or open-circuited, the DC output rails should not deliver current and should be held at zero potential with respect to ground. PS_ON# has no effect on the +5VSB output, which is always enabled whenever the AC power is present. Table 13 lists PS_ON# signal characteristics.

The power supply shall provide an internal pull-up to TTL high. The power supply shall also provide de-bounce circuitry on PS_ON# to prevent it from oscillating on/off at startup when activated by a mechanical switch. The DC output enable circuitry must be SELV-compliant.

The power supply shall not latch into a shutdown state when PS_ON# is driven active by pulses between 10 ms to 100 ms during the decay of the power rails.

Table 13. PS_ON# Signal Characteristics

Parameter Minimum Maximum

VIL 0 0.8 V

IIL (VIN = 0.4 V) - -1.6 mA1

VIH (IIN = 200 uA) 2.0 V -

VIH open circuit - -5.25 V

Ripple / Noise 400 mV p-p

NOTE: Negative current indicates that the current is flowing from the power supply to the motherboard.

Figure 4. PS_ON# Signal Characteristics

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24 336521 - 001

3.3.4 +5VSB – REQUIRED

+5VSB is a standby supply output that is active whenever the AC power is present.This output provides a power source for circuits that must remain operational whenthe five main DC output rails are in a disabled state. Example uses include soft powercontrol, Wake on LAN, wake-on-modem, intrusion detection, Alternative Sleep Modes(ASM) or suspend state activities.

The power supply must be able to provide the required power during a “wake up” event. If an external USB device generates the event, there may be peak currents as high as 3.5 A., lasting no more than 500ms.

Over current protection is required on the +5VSB output regardless of the output current rating. This ensures the power supply will not be damaged if external circuits draw more current than the supply can provide.

With new modes of operation for computers like Alternative Sleep Modes (ASM) the continuous current rating of the 5VSB rail is recommended to be at least 3 Amps. Some scenarios like USB Power Charging in ASM could require more current on the 5VSB rail.

3.3.5 Power-on Time – REQUIRED

The power-on time is defined as the time from when PS_ON# is pulled low to when the +12 VDC, +5 VDC, and +3.3 VDC outputs are within the regulation ranges specified in Table 5. The power-on time shall be less than 500 ms (T1 < 500 ms).

+5VSB shall have a power-on time of two second maximum after application of validAC voltages as shown in Figure 3. The 5VSB power on time is T0 as listed in Table 11in Section 3.3.

3.3.6 Rise Time – REQUIRED

The output voltages shall rise from 10% of nominal to within the regulation ranges specified in Table 5 within 0.2 ms to 20 ms (0.2 ms ≤ T2 ≤ 20 ms). The total time for Rise time of each voltage is listed in Table 11 as T2.

There must be a smooth and continuous ramp of each DC output voltage from 10% to 95% of its final set point within the regulation band, while loaded as specified.

The smooth turn-on requires that, during the 10% to 95% portion of the rise time, the slope of the turn-on waveform must be positive and have a value of between 0 V/ms and [Vout, nominal / 0.2] V/ms. Also, for any 5 ms segment of the 10% to 95% rise time waveform, a straight line drawn between the end points of the waveform segment must have a slope ≥ [Vout, nominal / 20] V/ms.

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336521 - 001 25

Figure 5. Rise Time Characteristics

3.3.7 Overshoot at Turn-on / Turn-off – REQUIRED

The output voltage overshoot upon the application or removal of the input voltage, or the assertion/de-assertion of PS_ON#, under the conditions specified in Table 5, shall be less than 10% above the nominal voltage. No voltage of opposite polarity shall be present on any output during turn-on or turn-off.

3.4 Reset after Shutdown If the power supply latches into a shutdown state because of a fault condition on its outputs, the power supply shall return to normal operation only after the fault has been removed and the PS_ON# has been cycled OFF/ON with a minimum OFF time of one second.

3.4.1 +5VSB at Power-down – REQUIRED

After AC power is removed, the +5VSB standby voltage output should remain at its steady state value for the minimum hold-up time specified in Section 3.2.9 until the output begins to decrease in voltage. The decrease shall be monotonic in nature, dropping to 0.0 V. There shall be no other disturbances of this voltage at or following removal of AC power.

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26 336521 - 001

3.4.2 +5VSB Fall Time - RECOMMENDATION

Power supply 5VSB is recommended to go down to low level within 2 seconds under any load condition after AC power is removed as shown in Figure 6. Intel test plan will test at Light 20% Load. If system requires specific +5VSB fall time, the PSU design is recommended to support it.

Figure 6. 5VSB Fall Time

3.5 Output Protection

3.5.1 Over Voltage Protection (OVP) – REQUIRED

The over voltage sense circuitry and reference shall reside in packages that are separate and distinct from the regulator control circuitry and reference. No single point fault shall be able to cause a sustained over voltage condition on any or all outputs. The supply shall provide latch-mode over voltage protection as defined in Table 14.

Table 14. Over Voltage Protection

Output Minimum (V) Nominal (V) Maximum (V)

+12 VDC(or 12V1DC and 12V2DC)

13.4 15.0 15.6

+5VDC 5.74 6.3 7.0

+3.3VDC 3.76 4.2 4.3

+5VSB1 5.74 6.3 7.0

NOTE: Over voltage protection is RECOMMENDED but not REQUIRED for this output. While over voltage protection is not required for this output, system damage may occur in the case of an over voltage event.

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336521 - 001 27

3.5.2 Short Circuit Protection (SCP) – REQUIRED

An output short circuit is defined as any output impedance of less than 0.1 ohms. The power supply shall shut down and latch off for shorting the +3.3V DC, +5V DC, or +12V DC rails to return or any other rail. The +12V1 DC and 12V2 DC should haveseparate short circuit and over current protection. Shorts between main output railsand +5VSB shall not cause any damage to the power supply. The power supply shalleither shut down and latch off or fold back for shorting the negative rails. +5VSB mustbe capable of being shorted indefinitely. When the short is removed, it isrecommended that the power supply shall recover automatically or by cyclingPS_ON#. Optionally, the power supply may latch off when a +5VSB short circuit eventoccurs. The power supply shall be capable of withstanding a continuous short circuit tothe output without damage or overstress to the unit (for example, to components,PCB traces, and connectors) under the input conditions specified in Table 4.

3.5.3 No-load Situation – REQUIRED

No damage or hazardous condition should occur with all the DC output connectors disconnected from the load. The power supply may latch into the shutdown state.

3.5.4 Over Current Protection (OCP) – REQUIRED

Current protection should be designed to limit the current to operate within safe operating conditions.

Over current protection schemes, where only the voltage output that experiences the over current event is shut off, may be adequate to maintain safe operation of the power supply and the system; however, damage to the motherboard or other system components may occur. The recommended over current protection scheme is for the power supply to latch into the shutdown state. PSU connectors, cables and all other components should not be melted or damaged prior reaching to the OCP trigger.

3.5.5 Over Temperature Protection (OTP) – REQUIRED

The power supply should include an over-temperature protection sensor, which can trip and shut down the power supply at a preset temperature point. Such an overheated condition is typically the result of internal current overloading or a cooling fan failure. If the protection circuit is non-latching, then it should have hysteresis built in to avoid intermittent tripping. PSU connectors, cables and all other components should not be melted or damaged prior reaching to the OCP trigger.

3.5.6 Output Bypass – REQUIRED

The output return may be connected to the power supply chassis, and will be connected to the system chassis by the system components.

3.5.7 Separate Current Limit for 12V2 - RECOMMENDED

The 12 V rail on the 2x2 power connector should be a separate current limited output to meet the requirements of UL and EN 60950.

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28 336521 - 001

3.5.8 Overall Power Supply Efficiency Levels

The efficiency of the power supply should be tested at nominal input voltage of 115 VAC input and 230 VAC input, under the load conditions defined in the Generalized Test Protocol for Calculating the Energy Efficiency of Internal Ac-Dc and Dc-Dc Power Supplies document. This document defines how to determine full load criteria based on the label of each rail of the power supply. The loading condition for testing efficiency represent fully loaded systems, typical (50%) loaded systems, and light (20%) loaded systems.

The Efficiency requirements listed below are applicable to AC Input voltage of 115V.

Table 15. Efficiency Versus Load Minimum Requirements and Recommendations

Loading Full Load

(100%)

Typical Load

(50%)

Light Load

(20%)

REQUIRED Minimum Efficiency 70% 72% 65%

3.5.9 Power Supply Efficiency for Energy Regulations - ENERGY STAR* and CEC (California Energy Commission) PC Computers with High Expandability Score - RECOMMENDED

The efficiency of the power supply should be tested at nominal input voltage of 115 VAC input and 230 VAC input, under the load conditions defined in the form factor specific sections, and under the temperature and operating conditions defined in Chapter 6. The loading condition for testing efficiency represent fully loaded systems, typical (50%) loaded systems, and light (20%) loaded systems. For system being sold into the state of California that meet the High Expandability Computer definition (details at the refer CEC website) are required to meet efficiency target list in Table 17 after Jan 2018, based on CEC Computers regulation.

Table 16. Efficiency Versus Load for ENERGY STAR*

Loading Full Load

(100%)

Typical Load

(50%)

Light Load

(20%) PFC

RECOMMENDED Minimum Efficiency 82% 85% 82% ≥0.9

Table 17. Efficiency Versus Load for CEC PC Computers with High Expandability Computers^

Loading Full Load

(100%)

Typical Load

(50%)

Light Load

(20%) PFC

REQUIRED Minimum Efficiency for 115V PSU 87% 90% 87% ≥0.9 @

50% load

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336521 - 001 29

Loading Full Load

(100%)

Typical Load

(50%)

Light Load

(20%) PFC

REQUIRED Minimum Efficiency for 230V PSU 88% 92% 88% ≥0.9 @

50% load

^Details about High Expandability Computers definition, check CEC computer regulation. The RECOMMENDED minimum efficiency levels shown in Table 16 are required for ENERGY STAR* system compliance based the version 5.2 specification.

The ENERGY STAR* computer specification requires at least 82% efficiency at 20%, 50% and 100% of the rated output capacity. This effectively provides a window of high efficiency that extends from 20% to 100% of the rated capacity of the power supply. Generally, the efficiency of the power supply drops off significantly as the load falls below 20%. Because the power supply is one of the largest contributors to power loss in the system, it is important to maximize the efficiency in order to comply with the power targets for the various system categories.

§§

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30 336521 - 001

4 Mechanical This section contains mechanical guidelines that apply to desktop power supplies regardless of form factor. For form factor specific design guides refer to Chapter 10 through Chapter 14.

4.1 Labeling and Marking - RECOMMENDED The following is a non-inclusive list of suggested markings for each power supply unit. Product regulation stipulations for sale into various geographies may impose additional labeling requirements.

Manufacturer information: manufacturer's name, part number and lot date code, etc., in human-readable text and/or bar code formats.

Nominal AC input operating voltages (100-127 VAC and 200-240 VAC) and current rating certified by all applicable safety agencies.

DC output voltages and current ratings.

Access warning text (“Do not remove this cover. Trained service personnel only. No user serviceable components inside.”) must be in English, German, Spanish, French, Chinese, and Japanese with universal warning markings.

PSU are required to label or tag Power Supply Design Guide revision compliance level to reflect the timing supported. There are three levels of timing for T1 and T3 a power supply can support. This will help system integrators and end users know the T1 and T3 timing that a power supply can support.

4.2 Connectors - REQUIRED

4.2.1 AC Connector

The AC input receptacle should be an IEC 320 type or equivalent. In lieu of a dedicated switch, the IEC 320 receptacle may be considered the mains disconnect.

4.2.2 DC Connectors

Table 17 shows pin outs and profiles for typical power supply DC harness connectors. The power supply requires an additional two-pin, power connector.

UL Listed or recognized component appliance wiring material rated min 85 °C, 300 VDC shall be used for all output wiring.

There are no specific requirements for output wire harness lengths, as these are largely a function of the intended end-use chassis, motherboard, and peripherals. Ideally, wires should be short to minimize electrical/airflow impedance and simplify manufacturing, yet they should be long enough to make all necessary connections without any wire tension (which can cause disconnections during shipping and

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336521 - 001 31

handling). Recommended minimum harness lengths for general-use power supplies is 150 mm for all wire harnesses. Measurements are made from the exit port of the power supply case to the wire side of the first connector on the harness.

Figure 7. Connectors (Pin-side view, not to Scale)

NOTE: Peripheral Connector is optional, does not show PCI-E Graphic Card Connector or 8 pin 12V2 connector.

4.2.2.1 Main Power Connector – REQUIRED

Connector: Molex* Housing: 24 Pin Molex Mini-Fit Jr. PN# 39-01-2240 or equivalent.

Contact: Molex 44476-1112 (HCS) or equivalent (Mating motherboard connector is Molex 44206-0007 or equivalent).

18 AWG is suggested for all wires except for the +3.3 V supply and sense return wires combined into pin 13 (22 AWG).

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32 336521 - 001

Table 18. Main Power Connector Pin-out

Pin Signal Color Pin Signal Color

1 +3.3V DC Orange 13 +3.3V DC

[+3.3 V default sense]

Orange [Brown]

2 +3.3V DC Orange 14 -12V DC Blue

3 COM Black 15 COM Black

4 +5V DC Red 16 PS_ON# Green


6 +5V DC Red 18 COM Black


8 PWR_OK Grey 20 Reserved NC

9 +5VSB Purple 21 +5V DC Red

10 +12V1 DC Yellow 22 +5V DC Red

11 +12V1 DC Yellow 23 +5V DC Red

12 +3.3V DC Orange 24 COM Black

4.2.2.2 Peripheral Connectors

Connector: AMP* 1-480424-0 or Molex* 15-24-4048 or equivalent.

Contacts: AMP 61314-1 or equivalent.

Table 19. Peripheral Connector Pin-out

Pin Signal Color1

1 +12V1 DC Yellow

2 COM Black

3 COM Black

4 +5 VDC Red

NOTE: 18 AWG wire.

4.2.2.3 Floopy Drive Connector – Do Not Included (For Historical Reference Only)

Connector: AMP* 171822-4 or equivalent.

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336521 - 001 33

Table 20. Floppy Connector Pin-out

Pin Signal Color1

1 +5V DC Red

2 COM Black

3 COM Black

4 +12V1 DC Yellow

NOTE: 20 AWG wire.

4.2.2.4 PCI-Express (PCI-E) Graphics Card Connector

This is an optional connector for the power supply to support additional power needed by a discrete graphics card over 75 watts.

Table 21. PCI-E Graphics Card 6 Pin Connector Pin-out


1 +12V3/V4 Yellow 4 COM Black



NOTE: 18 AWG wire.

Table 22. PCI-E Graphics Card 8 Pin (6+2) Connector Pin-out






NOTE: 18 AWG wire.

4.2.2.5 +12 V Power Connector

Connector: Molex* 0039012040 or equivalent.

Contact: Molex 44476-1112 (HCS) or equivalent (Mating motherboard connector is Molex 39-29-9042 or equivalent).

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34 336521 - 001

Table 23. +12 V Power 4 Pin Connector Pin-out

Pin Signal Color1 Pin Signal Color1

1 COM Black 3 +12V2 DC Yellow


NOTE: 18 AWG wire.

Table 24. +12 V Power 8 Pin Connector Pin-out

Pin Signal Color1 Pin Signal Color1





NOTE: 18 AWG wire.

4.2.2.6 Serial ATA* Connectors – REQUIRED

This is a required connector for systems with Serial ATA devices.

The detailed requirements for the Serial ATA Power Connector can be found in the “Serial ATA: High Speed Serialized AT Attachment” specification, Section 6.3 “Cables and connector specification”.

http://www.serialata.org/

Note: Connector pin numbers and wire numbers are not 1:1. Carefully check to confirm the correct arrangement.

Assembly: Molex* 88751 or equivalent..

Table 25. Serial ATA* Power Connector Pin-out

Wire Signal Color1

5 +3.3V DC Orange

4 COM Black

3 +5V DC Red

2 COM Black

1 +12V1 DC Yellow

NOTE: 18 AWG wire.

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336521 - 001 35

Figure 8. Serial ATA* Power Connector

4.3 Airflow and Fans - RECOMMENDED The designer's choice of a power supply cooling solution depends in part on the targeted end-use system application(s). At a minimum, the power supply design must ensure its own reliable and safe operation.

4.3.1 Fan Location and Direction

In general, exhausting air from the system chassis enclosure via a power supply fan at the rear panel is the preferred, most common, and most widely applicable system-level airflow solution. However, some system/chassis designers may choose to use other configurations to meet specific system cooling requirements.

4.3.2 Fan Size and Speed

A thermally sensitive fan speed control circuit is recommended to balance system-level thermal and acoustic performance. The circuit typically senses the temperature of the secondary heatsink and/or incoming ambient air and adjusts the fan speed as necessary to keep power supply and system component temperatures within specification. Both the power supply and system designers should be aware of the dependencies of the power supply and system temperatures on the control circuit response curve and fan size and should specify them carefully.

The power supply fan should be turned off when PS_ON# is de-asserted (high). In this state, any remaining active power supply circuitry must rely only on passive convection for cooling.

4.3.3 Venting

In general, more venting in a power supply case yields reduced airflow impedance and improved cooling performance. Intake and exhaust vents should be large, open, and unobstructed as possible so as not to impede airflow or generate excessive acoustic noise. In particular, avoid placing objects within 0.5 inches of the intake or exhaust of the fan itself. A flush-mount wire fan grill can be used instead of a stamped metal vent for improved airflow and reduced acoustic noise.

The limitations to the venting guidelines above are:

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36 336521 - 001

• Openings must be sufficiently designed to meet the safety requirements describedin Chapter 8.

• Larger openings yield decreased EMI-shielding performance. (Refer Chapter 7).

• Venting in inappropriate locations can detrimentally allow airflow to bypass thoseareas where it is needed.

§§

Acoustics

336521 - 001 37

5 Acoustics

5.1 Acoustics – RECOMMENDED It is recommended that the power supply be designed with an appropriate fan, internal impedance, and fan speed control circuitry capable of meeting the acoustic targets listed in Table 26.

The power supply assembly shall not produce and prominent discrete tone determined according to ISO 7779, Annex D.

Sound power determination is to be performed at 43 C, at 50% of the maximum rated load, at sea level. This test point is chosen to represent the environment seen inside a typical system at the idle acoustic test condition, with the 43 C being derived from the standard ambient assumption of 23 C, with 20 C added for the temperature rise within the system (what is typically seen by the inlet fan). The declared sound power shall be measured according to ISO 7779 and reported according to ISO 9296.

Different customers might have different acoustic specifications. Any power supply design is recommended to follow any specific customer requirements.

Table 26. Recommended Power Supply Acoustic Targets

Idle (BA) Typical (50% Load)

(BA) Maximum

(BA)

Minimum 3.5 4.0 5.0

Target 3.0 3.8 4.5

§§

Environmental

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6 Environmental The following subsections define environmental specifications and test parameters, based on the typical conditions to which a power supply may be subjected during operation or shipment.

6.1 Temperature – RECOMMENDED • Operating ambient +10 °C to +50 °C (At full load, with a maximum temperature

rate of change of 5 °C/10 minutes, but no more than 10 °C/hr.)

• Non-operating ambient -40 °C to +70 °C (Maximum temperature rate of change of 20 °C/hr.)

6.2 Thermal Shock (Shipping) • Non-operating -40 °C to +70 °C

• 15 °C/min ≤ dT/dt ≤ 30 °C/min

• Tested for 50 cycles; Duration of exposure to temperature extremes for each half cycle shall be 30 minutes.

6.3 Humidity – RECOMMENDED • Operating To 85% relative humidity (non-condensing)

• Non-operating To 95% relative humidity (non-condensing)

Note: 95% relative humidity is achieved with a dry bulb temperature of 55 °C and a wet bulb temperature of 54 °C.

6.4 Altitude – RECOMMENDED • Operating To 10,000 ft

• Non-operating To 50,000 ft

6.5 Mechanical Shock – RECOMMENDED • Non-operating 50 g, trapezoidal input; velocity change ≥ 170 in/s

• Three drops on each of six faces are applied to each sample.

6.6 Random Vibration – RECOMMENDED • Non-operating 0.01 g²/Hz at 5 Hz, sloping to 0.02 g²/Hz at 20 Hz, and

maintaining 0.02 g²/Hz from 20 Hz to 500 Hz. The area under the PSD curve is

Environmental

336521 - 001 39

3.13 gRMS. The duration shall be 10 minutes per axis for all three axes on all samples.

§§

Electromagnetic Compatibility

40 336521 - 001

7 Electromagnetic Compatibility The following subsections outline applicable product regulatory requirements for the power supplies. Additional requirements may apply dependent upon the design, product end use, target geography, and other variables.

7.1 Emissions – REQUIRED The power supply shall comply with FCC Part 15, EN55023 and CISPR 22, 5th ed., meeting Class B for both conducted and radiated emissions with a 4 dB margin. Tests shall be conducted using a shielded DC output cable to a shielded load. The load shall be adjusted as follows for three tests: No load on each output; 50% load on each output; 100% load on each output. Tests will be performed at 100 VAC 50Hz, 120 VAC 60 Hz, and 230 VAC 50 Hz power. Additionally, for FCC certification purposes, the power supply shall be tested using the methods in 47 CFR 15.32(b) and authorized under the Declaration of Conformity process as defined in 47 CFR 2.906 using the process in 47 CFR 2.1071 through 47 CFR 2.1077.

7.2 Immunity - REQUIRED The power supply shall comply with EN 55024 and CISPR 24 prior to sale in the EU (European Union), Korea, and possibly other geographies.

7.3 Input Line Current Harmonic Content - OPTIONAL Class D harmonic limits will be determined at the time of measurement based on the actual power draw from the mains.

Table 27 is a partial list of countries and their current EMC requirements. Additional requirements may apply dependent upon the design, product end use, target geography, and other variables.

Table 27. EMC Requirement by Country

Country Requirements Document

EU (European Union) EN61000-3-2

Japan JEIDA MITI

China CCC and GB 17625.1

Russia GOST R 51317.3.2

7.4 Magnetic Leakage Field - REQUIRED A PFC choke magnetic leakage field should not cause any interference with a high-resolution computer monitor placed next to or on top of the end-use chassis.

Electromagnetic Compatibility

336521 - 001 41

7.5 Voltage Fluctuations and Flicker – REQUIRED The power supply shall meet the specified limits of EN61000-3-3 (IEC 61000-3-3) and amendment A1 to EN 61000-3-3 (IEC 61000-3-3/A1) for voltage fluctuations and flicker for equipment drawing not more than 16AAC, connected to low voltage distribution systems.

§§

Safety

42 336521 - 001

8 Safety The following subsections outline sample product regulations requirements for a typical power supply. Actual requirements will depend on the design, product end use, target geography, and other variables. Consult your company’s Product Safety and Regulations department or an accredited third party certification agency for more details.

8.1 North America – REQUIRED The power supply must be certified by an NRTL (Nationally Recognized Testing Laboratory) for use in the USA and Canada under the following conditions:

• The power supply UL report “Conditions of Acceptability” shall meet in the intended application of the power supply in the end product.

• The supply must be recognized for use in Information Technology Equipment including Electrical Business Equipment per UL 60950-1 First Edition. The certification must include external enclosure testing for the AC receptacle side of the power supply.

• The supply must have a full complement of tests conducted as part of the certification, such as input current, leakage current, hi-pot, temperature, energy discharge test, transformer output characterization test (open-circuit voltage, short-circuit performance), and abnormal testing (to include stalled-fan tests and voltage-select–switch mismatch).

• The enclosure must meet fire enclosure mechanical test requirements per clauses 2.9.1 and 4.2 of the above-mentioned standard.

• Production hi-pot testing must be included as a part of the certification and indicated as such in the certification report.

• There must not be unusual or difficult conditions of acceptability such as mandatory additional cooling or power de-rating. The insulation system shall not have temperatures exceeding their rating when tested in the end product.

• The certification mark shall be marked on each power supply.

• The power supply must be evaluated for operator-accessible secondary outputs (reinforced insulation) that meet the requirements for SELV.

• The proper polarity between the AC input receptacle and any printed wiring boards connections must be maintained (that is, brown=line, blue=neutral, and green=earth/chassis).

• The fan shall be protected by a guard to prevent contact by a finger in compliance with UL accessibility requirements.

8.2 International – REQUIRED The vendor must provide a complete CB certificate and test report to IEC 60950-1. The CB report must include ALL CB member country national deviations as appropriate

Safety

336521 - 001 43

for the target market. All evaluations and certifications must be for reinforced insulation between primary and secondary circuits.

The power supply must meet the RoHS requirements for the European Union, Peoples Republic of China and other countries which have adopted the RoHS requirements for banned materials.

8.3 Proscribed Materials The following materials must not be used during design and/or manufacturing of this product:

• Cadmium should not be used in painting or plating - REQUIRED.

• Quaternary salt and PCB electrolytic capacitors shall not be used - REQUIRED.

• CFC's or HFC's shall not be used in the design or manufacturing process - REQUIRED.

• Mercury shall not be used - REQUIRED.

• Some geographies require lead free or RoHS compliant power supplies - REQUIRED.

8.4 Catastrophic Failure Protection - RECOMMENDED If a component failure occurs, the power supply should not exhibit any of the following:

• Flame

• Excessive smoke

• Charred PCB

• Fused PCB conductor

• Startling noise

• Emission of molten material

• Earth ground fault (short circuit to ground or chassis enclosure)

§§

Reliability

44 336521 - 001

9 Reliability

9.1 Reliability - RECOMMENDED The de-rating process promotes quality and high reliability. All electronic components should be designed with conservative device de-ratings for use in commercial and industrial environments.

Electrolytic capacitor and fan lifetime and reliability should be considered in the design as well.

§§

CFX12V Specific Guidelines 1.6

336521 - 001 45

10 CFX12V Specific Guidelines 1.6 For Compact Form Factor with 12-volt connector power supplies.

All Form Factors Revision Summary: PSU DG CFX12V LFX12V ATX12V SFX12V TFX12V Flex ATX

1.31 1.5 1.3 2.4 3.3 2.4 1.1

1.4 1.6 1.4 2.5 3.4 2.5 1.2

10.1 Physical Dimensions – REQUIRED The power supply shall be enclosed and meet the physical outline shown in Figure 9.

Figure 9. CFX12V Mechanical Outline

§§

LFX12V Specific Guidelines 1.4

46 336521 - 001

11 LFX12V Specific Guidelines 1.4 For Low Profile Form Factor with 12-volt connector power supplies.


1.31 1.5 1.3 2.4 3.3 2.4 1.1

1.4 1.6 1.4 2.5 3.4 2.5 1.2

11.1 Physical Dimensions - REQUIRED The power supply shall be enclosed and meet the physical outline shown in Figure 10, applicable. Mechanical details are shown in Figure 11. Details on the power supply slot feature are shown in Figure 12. The recommended chassis slot feature details are shown in Figure 13.

Figure 10. Mechanical Outline


336521 - 001 47

Figure 11. Mechanical Details

Figure 12. PSU Slot Feature Detail


48 336521 - 001

Figure 13. Recommended Chassis Tab Feature

§§

ATX12V Specific Guidelines 2.5

336521 - 001 49

12 ATX12V Specific Guidelines 2.5 For ATX Form Factor with 12-volt connector power supplies.


1.31 1.5 1.3 2.4 3.3 2.4 1.1

1.4 1.6 1.4 2.5 3.4 2.5 1.2

Figure 14. Power Supply Dimensions for Chassis that does not Require Top Venting

ATX12V Specific Guidelines 2.5

50 336521 - 001

Figure 15. Power Supply Dimensions for Chassis that Require Top Venting

§§

SFX12V Specific Guidelines 3.4

336521 - 001 51

13 SFX12V Specific Guidelines 3.4 For Small Form Factor with 12-volt connector power supplies.


1.31 1.5 1.3 2.4 3.3 2.4 1.1

1.4 1.6 1.4 2.5 3.4 2.5 1.2

13.1 Lower Profile Package - Physical Dimensions - REQUIRED The power supply shall be enclosed and meet the physical outline shown in Figure 16.

13.2 Fan Requirements - REQUIRED The fan will draw air from the computer system cavity pressurizing the power supply enclosure. The power supply enclosure shall exhaust the air through a grill located on the rear panel. Refer Figure 17. The movement of the fan to the computer system cavity is to help limit the acoustic noise of the unit.

The fan will be 40 mm.


52 336521 - 001

Figure 16. 40 mm Profile Mechanical Outline

Figure 17. Chassis Cutout


336521 - 001 53

13.3 Top Fan Mount Package - Physical Dimensions -REQUIRED The power supply shall be enclosed and meet the physical outline shown in Figure 18.

13.4 Fan Requirements - REQUIRED The fan will draw air from the computer system cavity pressurizing the power supply enclosure. The power supply enclosure shall exhaust the air through a grill located on the rear panel. Refer Figure 19. Moving the fan to the computer system cavity helps to limit the acoustic noise of the unit.

The fan will be 80mm.

To prevent damage to the fan during shipment and handling, the power supply designer should consider recessing the fan mounting, as shown in Figure 20.


54 336521 - 001

Figure 18. Top Mount Fan Profile Mechanical Outline


336521 - 001 55


Figure 20. Recessed Fan Mounting

13.5 Reduced Depth Top Mount Fan - Physical Dimensions - REQUIRED The power supply shall be enclosed and meet the physical outline shown in Figure 21.

13.6 Fan Requirements - REQUIRED The fan will draw air from the computer system cavity pressurizing the power supply enclosure. The power supply enclosure shall exhaust the air through a grill located on the rear panel. Refer Figure 21. Moving the fan to the computer system cavity helps to limit the acoustic noise of the unit.



56 336521 - 001

Figure 21. Reduced Depth Top Mount Fan Profile Mechanical Outline


13.7 Standard SFX Profile Package – Physical Dimensions - REQUIRED The power supply shall be enclosed and meet the physical outline shown in Figure 23.


336521 - 001 57

13.8 Fan Requirements - REQUIRED The fan will draw air from the computer system cavity pressurizing the power supply enclosure. The power supply enclosure shall exhaust the air through a grill located on the rear panel. Refer Figure 24. The movement of the fan to the computer system cavity is to help limit the acoustic noise of the unit.


Figure 23. 60 mm Mechanical Outline


58 336521 - 001


13.9 PS3 Form Factor- Physical Dimensions - REQUIRED The power supply shall be enclosed and meet the physical outline shown in Figure 25.

13.10 Fan Requirements - REQUIRED An 80 mm axial fan is typically needed to provide enough cooling airflow through a high performance Micro ATX system. Exact CFM requirements vary by application and endues environment, but 25-35 CFM is typical for the fan itself.

For consumer or other noise-sensitive applications, it is recommended that a thermally sensitive fan speed control circuit be used to balance system-level thermal and acoustic performance. The circuit typically senses the temperature of an internal heatsink and/or incoming ambient air and adjusts the fan speed as necessary to keep power supply and system component temperatures within specification. Both the power supply and system designers should be aware of the dependencies of the power supply and system temperatures on the control circuit response curve and fan size and should specify them very carefully.

The power supply fan should be turned off when PS_ON# is de-asserted (high). In this state, any remaining active power supply circuitry must rely only on passive convection for cooling.


336521 - 001 59

Figure 25. PS3 Mechanical Outline

§§

TFX12V Specific Guidelines 2.5

60 336521 - 001

14 TFX12V Specific Guidelines 2.5 For Thin Form Factor with 12-volt connector power supplies.


1.31 1.5 1.3 2.4 3.3 2.4 1.1

1.4 1.6 1.4 2.5 3.4 2.5 1.2

14.1 Physical Dimensions - REQUIRED Figure 26. Mechanical Outline


336521 - 001 61

Figure 27. Dimensions and Recommended Feature Placements (Not to Scale)


62 336521 - 001

Figure 28. Power Supply Mounting Slot Detail

14.2 Mounting Options - RECOMMENDED The TFX12V mechanical design provides two options for mounting in a system chassis. The unit can be mounted using one of the mounting holes on the front end (non-vented end) or a chassis feature can be designed to engage the slot provided in the bottom of the supply. In order to accommodate different system chassis layouts, the TFX12V power supply is also designed to mount in two orientations (fan left and fan right) as shown in Figure 29. A mounting hole and slot should be provided for each


336521 - 001 63

orientation as shown in Figure 27. Details of a suggested geometry for the mounting slot are shown in Figure 28.

Figure 29. Fan Right and Fan Left Orientations of Power Supply in a Chassis

14.3 Chassis Requirements - RECOMMENDED To ensure the power supply can be easily integrated, the following features should be designed into a chassis intended to use a TFX12V power supply:

• Chassis cutout (normally in the rear panel of the chassis) as shown in Figure 30.

• EITHER a mounting bracket to interface with the forward mounting hole on the power supply OR a mounting tab as shown in Figure 31 to interface with the mounting slot on the bottom of the power supply.

Figure 30. Suggested TFX12V Chassis Cutout


64 336521 - 001

Figure 31. Suggested Mounting Tab (Chassis Feature)

§§

Flex ATX Specific Guidelines 1.2

336521 - 001 65

15 Flex ATX Specific Guidelines 1.2 For Flex ATX Form Factor with 12-volt connector power supplies.


1.31 1.5 1.3 2.4 3.3 2.4 1.1

1.4 1.6 1.4 2.5 3.4 2.5 1.2

15.1 Physical Dimensions – REQUIRED

Figure 32. Mechanical Outline

Flex ATX Specific Guidelines 1.2

66 336521 - 001

Figure 33. Dimensions and Recommended Feature Placements (Not to Scale)

§§

Appendix: Test Plan

336521 - 001 67

16 Appendix: Test Plan

16.1 Test Plan Introduction The following Test Plan covers what Intel how Intel is planning on testing power supplies that are part of the Intel PSU Tested List. The sections listed below are in the same order they appear in the Main section of the Design Guide.

All testing performed in the Intel lab are completed at room temperature. This is typically around 25°C, ±5°C.

The overall Wattage output rating of the power supply will help determine the loading conditions for all testing. Efficiency loading conditions are determined using the calculations that are described in Section 6.1.1 of the Generalized Test Protocol for Calculating the Energy efficiency of Internal Ac-Dc and Dc-Dc Power Supplies Revision 6.7.

(http://www.plugloadsolutions.com/docs/collatrl/print/Generalized_Internal_Power_Supply_Efficiency_Test_Protocol_R6.7.pdf)

Using the calculations mentioned in this document comes from the following Definitions, which are used in the document.

• Full Load = 100% Load

• Typical Load = 50% Load

• Light Load = 20% Load

Overall DC Voltage Range for all DC Output rails:

References Sections in PSU DG – Section 3.2.1

Table 28. DC Load Voltage Ranges

Outputs Voltage

Voltage Range (V)

Min Typical Max

+5V 4.75 5.0 5.25

+3.3V 3.14 3.3 3.47

-12V -13.2 -12.0 -10.8

+5VSB 4.75 5.0 5.25

+12V1 11.4 12.0 12.6

+12V2 11.4 12.0 12.6

http://www.plugloadsolutions.com/docs/collatrl/print/Generalized_Internal_Power_Supply_Efficiency_Test_Protocol_R6.7.pdf

http://www.plugloadsolutions.com/docs/collatrl/print/Generalized_Internal_Power_Supply_Efficiency_Test_Protocol_R6.7.pdf

Appendix: Test Plan

68 336521 - 001

16.2 Processor Specific Tests

16.2.1 12V2 Peak Loading Test - RECOMMENDED

References Sections in PSU DG – Section 2.1 Processor Configurations - RECOMMENDED

Test Condition:

• Test the power supply at specified AC input line.

• The test duration for 12V2 Peak Amp is 10mS with the load changes from Continuous Current to Peak Current in a maximal slew-rate 1.0 A/us as referenced in the Design Guide Section 3.2.2 (DC Output Current).

• Testing level is determined by the Max rated current value on the Nameplate of the sticker of the PSU for the 12V2 rail.

• If the PSU has one combined 12V rail for all connectors, then there has to be some current allocated for both 12V1 and 12V2. For the purpose of CPU peak, the first 8A will be for 12V1 and the rest will be used for 12V2. If the combined 12V rail current is above 24A, then the peak will be for a 95W TDP peak level of 18A. Anything less than that will use the table below to determine the peak level tested.

Examples #1 - If the PSU has both 12V1 and 12V2 values listed and the 12V2 Max rated value is 15A, then testing will use the 14A value for Continuous and 18A for Peak.

Example #2 – - If the PSU has both 12V1 and 12V2 values listed and the 12V2 Max rated value is 13A or lower, then testing will use the 10A value for Continuous and 13.5A for Peak.

Example #3 – If the PSU has one combined 12V power rail and the combined 12V rail has a Max Rated current of 22A, then 22A – 8A = 14A. Continuous current of 14A and Peak current of 18A will be used.

Example #4 – If the PSU has one combined 12V power rail and the combined 12V rail has a Max Rated current of 21A, then 21A – 8A = 13A. Continuous current of 10A and Peak current of 13.5A will be used.

Appendix: Test Plan

336521 - 001 69

Table 29. PSU 12V2 (CPU) Continuous and Peak Current Recommendations

PSU 12V2 Capability Recommendations

Processor TDP Continuous

Current Peak Current

95W 16A 18A

80W 14A 18A

65W 14A 18A

35W 10A 13.5A

Pass Criteria:

• The DC output voltages for 12V1/12V2/5V/3.3V/-12V/5Vsb shall remain within the regulation ranges specified in the PSU Design Guide when measured at the load end of the output connectors.

• 12V1 and 12V2 output voltage shall also remain in the range from 11.4V~12.6V (5%) when 12V2 is under the Peak Amp loading.

Test Scenarios:

Table 30. 12V2 Peak Load Test Scenarios

AC Voltage

5V 3.3V -12V 5VSB 12V1 12V2

115V / 60Hz

Loading 1 (Continuous) Light Max

Loading 2 (Peak) 10ms Light Peak

230V / 50Hz

Loading 1 (Continuous) Light Max

Loading 2 (Peak) 10ms Light Peak

16.2.2 12V2 Load 16A Continue - RECOMMENDED

References Sections in PSU DG – Section 2.1 Processor Configurations - RECOMMENDED

Test Condition:

• Test the power supply at specified AC input line.

• Loading is calculated to create the full rated wattage of the power supply. Four loads (5V, 3.3V, -12V, 5VSB) all use the calculated Full Load value used for efficiency. The 12V2 load is set to 16 Amp. The 12V1 load value is then calculated by using 16 Amps on the 12V2 rail for a wattage of 192 watts. The rest

Appendix: Test Plan

70 336521 - 001

of the combined 12 Volt rail Wattage is then subtracted from 192 watt and then divided by 12 to determine the 12V1 load.

Example – combined 12V rail wattage is 300 watts. 12V2 uses 16 A for 192 watts. 12V1 = (300 – 192) / 12 = 108 / 12 = 9 Amps

Pass Criteria:

• - The DC output voltages for 12V1/12V2/5V/3.3V/-12V/5Vsb shall remain within the regulation ranges specified in the PSU Design Guide when measured at the load end of the output connectors.

Test Scenarios:

Table 31. 12V2 Load 16A Continuous Test Scenarios

AC Voltage 5V 3.3V -12V 5VSB 12V1 12V2

115V / 60Hz Full Calculated 16A

230V / 50 Hz Full Calculated 16A

16.2.3 12V2 Min Load 0A - RECOMMENDED


Test Condition:

Test the power supply at specified AC input line and the specified loads. 1. 5V and 3.3V rails are set to Minimum Load criteria all other rails load set to 0A. 2. 12V2 load value 0A with 3V/5V running with max combine watt load mark on

nameplate, while other rails load min load as defined in the Test Plan Tables.

Pass Criteria:

• The DC output voltages for 12V1/12V2/5V/3.3V/-12V/5VSB shall remain within the regulation ranges specified in the PSU Design Guide when measured at the load end of the output connectors.

Test Scenarios:

Table 32. 12V2 Min Load 0A Test Scenarios


115V / 60Hz

0.2A (min)

0.1A (min) 0A 0A 0A 0A

Max Combine Min 0A

230V / 50 Hz 0.2A (min)

0.1A (min) 0A 0A 0A 0A

Appendix: Test Plan

336521 - 001 71


Max Combine Min 0A

NOTE: If 5V and 3.3V rated combined load is larger than 120W on nameplate, we apply the 5V and 3.3V max load as 120W.

16.3 Electrical

16.3.1 AC Line Regulation – REQUIRED

References Sections in PSU DG – Section 3.1; Section 3.2.1

Test Condition:

• Test the power supply at specified AC input line and the specified loads.

• Specification of DC Voltage Range for all DC voltage outputs.

Table 33. DC Load Voltage Ranges

Outputs Voltage

Voltage Range (V)

Min Typical Max

+5V 4.75 5.0 5.25

+3.3V 3.14 3.3 3.47

-12V -13.2 -12.0 -10.8

+5VSB 4.75 5.0 5.25

+12V1 11.4 12.0 12.6

+12V2 11.4 12.0 12.6

Pass Criteria:

• The DC output voltages shall remain within the regulation ranges specified in the above PSU specification when measured at the load end of the output connectors.

Test Scenarios:

Table 34. AC Line Regulation Test Scenarios

Criteria DC Load AC Line Regulation Voltage / Frequency

Required or Recommended

1 Typical Load 90V / 60 Hz Required 2 Typical Load 135V / 60 Hz Required

Appendix: Test Plan

72 336521 - 001


Required or Recommended

3 Typical Load 180V / 50 Hz Required

4 Typical Load 265V / 50Hz Required

5 Typical Load 90V / 47 Hz Recommended


7 Typical Load 135V / 47Hz Recommended






16.3.2 Load / Cross Regulation – REQUIRED

References Sections in PSU DG – Section 3.2.1; Section 3.5.3

Test Condition:

• All Testing done at both 115V / 60 Hz and 230V / 50 Hz

DC Loads are determined to test a wide variety of conditions between low and high loading for each rail.

Test Scenarios:

Table 35. Load / Cross Regulation Test Scenarios – REQUIRED

Loading

Load +5V +3.3V -12V +5VSB +12V1 +12V2

0 Min

1 Light Min

2 Typical Min

3 Full Min

4 Min Light Min

5 Min Typical Min

6 Light Min Full Min

7 Min Light

8 Min Typical

9 Light Min Full

10 Min Light Min

Appendix: Test Plan

336521 - 001 73

Loading

11 Min Typical Typical

12 Light Full Full

13 Light

14 Typical

15 Full

16 No Load

Adding FL1 to FL4 below. These new tests will be recommendation only and stress the Max rating for 5V, 3.3V, 12V1, and 12V2 while the DC output equals a Full Load value. FL3 and FL4 will only be tested if the power supply has two 12V rails. If the power supply has only one combined 12V rail or more than two 12V rails, then FL3 and FL4 are not tested.

Appendix: Test Plan

74 336521 - 001

Table 36. Load / Cross Regulation Test Scenarios – New (RECOMMENDATION)

Loading

Load +5V +3.3V -12V +5VSB +12V1 +12V2

FL1 (Left over w/3.3V)

Max (nameplate)

Full

FL2 Max (Nameplate)

(left over with 5V)

Full

FL3 Full (Max) (Leftover with

12V1)

FL4 Full (Leftover with 12V2)

Max

16.3.3 Efficiency – Main Rails On (ENERGY STAR* and CEC)

References Sections in PSU DG – Section 3.5.8 and Section 3.5.9

Test Condition:

• Test the power supply with nominal line voltage and the following loads.

• DC Loading Conditions calculated using Section 6.1.1 of the Generalized Test Protocol for Calculating the Energy efficiency of Internal Ac-Dc and Dc-Dc Power Supplies Revision 6.7. 100% Load condition is otherwise known as Full Loading in the Test Plan.

• Other DC Output load conditions are determined to match up with the 80 Plus program, or to provide more information as how efficiency drops off at the low load condition.

Pass Criteria:

• The power supply shall be meet the Intel minimum percentage efficiency under specified loading.

Note: For different Energy Regulations there is different levels of efficiency that are required. Energy Star Requires 80 Plus Bronze levels CEC has a requirement for High Expandability Computers have 80 Plus Gold.

Another part of High Expandability Computers has a requirement for 600W or higher be 80 Plus Gold.

• Test results will show which 80 plus level the power supply reaches for both 115V and 230V.

Test Scenarios:

Test Report will highlight in yellow what efficiency level is reached during testing for each load point.

Appendix: Test Plan

336521 - 001 75

Table 37. Example Efficiency Table from Test Report – 115V

Load 115V

Efficiency

Intel Min (Required)

80 Plus

80 Plus Bronze

80 Plus Silver

80 Plus

Gold

80 Plus Platinum

80 Plus

Titanium

Applicable Specification

ENERGY STAR* Required

ENERGY STAR* Adder

possible

ENERGY

STAR* Adder

possible

100% 70% 80% 82% 85% 87% 89% 90%

80 Plus and ENERGY STAR* 50% 72% 80% 85% 88% 90% 92% 94%

20% 65% 80% 82% 85% 87% 90% 92%

15% N/A N/A N/A N/A N/A N/A N/A

10% N/A N/A N/A 81% 84% N/A 90% ENERGY

STAR* only


Appendix: Test Plan

76 336521 - 001

Table 38. Example Efficiency Table from Test Report – 230V

Load 230V

Efficiency

Intel Min (Required)

80 Plus

80 Plus Bronze

80 Plus Silver

80 Plus

Gold

80 Plus Platinum

80 Plus

Titanium

Applicable Specification


ENERGY STAR* Adder

possible

ENERGY

STAR* Adder

possible

100% 70% 82% 85% 87% 89% 90% 94%

80 Plus and ENERGY STAR* 50% 72% 85% 88% 90% 92% 94% 96%

20% 65% 82% 85% 87% 90% 92% 94%


10% N/A N/A N/A 81% 84% N/A 90% ENERGY

STAR* only


16.3.4 Efficiency – 5VSB [Europe (ErP Lot 3/6) and Alternative Sleep Mode (ASM)]


Test Condition:


• Measured with the main outputs off (PS_ON# high state), 5VSB Voltage rail only.

Pass Criteria:

• The power supply shall be a minimum percentage efficiency under specified loading.

• Pass levels are determined based on multiple Energy Regulations and what loading is needed from a complete system level is then split between PSU loss and system DC load to meet the AC Wattage limit.

Test Scenarios:

Extra testing is done to see the whole curve for 5VSB Voltage Rail efficiency

Appendix: Test Plan

336521 - 001 77

Table 39. 5VSB Efficiency Targets and Test Scenarios

5VSB

Load Target

5VSB

Actual Load

Efficiency Target (Both 115V and

230V Input) Remark

Max / Label 3.0A /Label 75% Recommend

1.5 A 75% ASM and ErP Lot 3 2014

1.00 A 75% recommend

0.55 A 75% ASM and ErP* Lot 3/6 2014

0.25 A

100 mA

90 mA 45% ErP* Lot 3/6 2010

70 mA

45 mA 45% ErP* Lot 3/6 2013

20 mA

16.3.5 Power Factor

There are multiple programs that require Power Factor values as part of the Efficiency Test levels of Full Load (100%) and Typical Load (50%). The 80 Plus program has the same Power Factor requirement at different testing levels based on the program. For Energy Regulations of ENERGY STAR* and CEC when they have Efficiency requirements they also include a Power Factor requirement at certain levels.

Test Condition:


Pass Criteria:

• The power supply shall be a minimum Power Factor under specified loading.

Test Scenarios:

Appendix: Test Plan

78 336521 - 001

Table 40. Power Factor during Efficiency Testing

Load AC

Voltage

115V

AC Voltage

230V

80 Plus Required


CEC

100% 0.9 – 80 Plus only

0.9

50%

0.9 = Bronze and higher

N/A 0.9 (600w and 80 Plus Gold or

higher)

10W/ 2% Value is reported

16.3.6 Ripple and Noise Test – REQUIRED

References Sections in PSU DG – Section 3.2.5, Section 3.3.1 and Section 3.3.3

Test Condition:

• Test the power supply at AC input line, and measured the PSU under load condition shown in the below table.

• Add a 0.1uF ceramic capacitor in parallel with 10uF electrolytic capacitor at the output connector terminals.

Pass Criteria:

• The ripple of power supply should be within the specification.

Table 41. Ripple and Noise Pass Criteria

Output Maximum Ripple and Noise (mV p-p)

+5V 50

+3.3V 50

-12V 120

+5VSB 50

+12V1 120

+12V2 120

PWR_OK 400

PS_ON 400

Test Scenarios:

Appendix: Test Plan

336521 - 001 79

Table 42. Ripple and Noise Test Scenarios


1 Light (20%) Load 115V / 60 Hz

2 Full (100%) Load 115V / 60 Hz

3 Light (20%) Load 230V / 50 Hz

4 Full (100%) Load 230V / 50 Hz

16.3.7 Dynamic Load – REQUIRED

References Sections in PSU DG – Section 3.2.6 and Section 3.2.2

Test Condition:

• Test the power supply at AC input line and the following load changes with a 1A/µs slew-rate for +5V, +12V and +3.3V, 0.2 A/µs for +5Vsb and 0.05 A/µs for -12V; also with 50% duty cycle at both 50Hz and 10KHz.

Appendix: Test Plan

80 336521 - 001

Table 43. Dynamic Load Test Conditions

Output De-coupling

Capacitors

Voltage Limits. (V)

Load Change Required

Min. Max. Low Load High Load

+5V 3,300uF

44.75 5.25 Min~30%Max (Max-30%)~Max

Yes

+3.3V 3,300uF

3.14 3.47 Min~30%Max (Max-30%)~Max

Yes

-12V 330 -13.2 -10.8 0A ~ 0.1A 0.2A ~ 0.3A Yes

+5VSB 3,300uF 4.75 5.25 0A ~ 0.5A 2.0A ~ 2.5A Yes

+12V1 3,300uF

11.4 12.6 Min~40%Max (Max-40%)~Max

Yes

+12V1 3,300uF

11.4 12.6 Min~70%Max (Max-70%)~Max

Recommended

+12V2 3,300uF

11.4 12.6 Min~85%Max (Max-85%)~Max

Yes

+12V3/12V4 PCIe GFX

3,300uF 11.4 12.6 Min~80%Max (Max-80%)~Max

Recommended

+12V3/12V4 PCIe GFX, based on Graphics card recommendations. This is not an Intel requirement and so it will be treated as a recommendation during testing.

Pass Criteria:

• The DC output voltages shall remain within the regulation ranges specified in the above PSU specification when measured at the load end of the output connectors.

Appendix: Test Plan

336521 - 001 81

Test Scenarios:

Table 44. 115V/60Hz @ 50 Hz Dynamic Load Test Scenarios

Freq-uenc

y AC

Input

DC Output

5V 3.3V -12V 5VSB 12V1 12V2 12V3/V4

50 Hz 115V/ 60Hz

Min~ 30%Max

Min

70% Max

~Max

Light

Light Min~ 30%Max

Min

Light 70% Max

~Max

Light

Min 0A ~ 0.1A

Min

Light 0.2A ~ 0.3A

Light

Min 0A ~ 0.5A

Min

Light 2.0A ~ 2.5A

Light

Light Min Min~40%Max

Min

Light 60%Max~Max

Light


Min

Light 30%Max~Max

Light


Min

Light 15%Max~Max

Light


Light 20%Max~Max

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82 336521 - 001

Table 45. 230V/50Hz @ 50 Hz Dynamic Load Test Scenarios

Freq-uency

AC Input

DC Output

5V 3.3V -12V 5VSB 12V1 12V2 12V3/V4

50 Hz 230V/ 50Hz

Min~

30%Max

Min

70% Max ~Ma

x

Light

Light Min~ 30%Max

Min

Light 70% Max

~Max

Light

Min 0A ~ 0.1A

Min

Light 0.2A ~ 0.3A

Light

Min 0A ~ 0.5A

Min

Light 2.0A ~ 2.5A

Light


Min

Light 60%Max~Max

Light


Min

Light 30%Max~Max

Light


Min

Light 15%Max~Max

Light


Light 20%Max~Max

Appendix: Test Plan

336521 - 001 83

Table 46. 115V/60Hz @ 10 kHz Dynamic Load Test Scenarios

Freq-uency

AC Input

DC Output

5V 3.3V -12V 5VSB 12V1 12V2 12V3/V4

10 KHz 115V/ 60Hz

Min~ 30%Max

Min

70% Max ~Ma

x

Light

Light Min~ 30%Max

Min

Light 70% Max

~Max

Light

Min 0A ~ 0.1A

Min

Light 0.2A ~ 0.3A

Light

Min 0A ~ 0.5A

Min

Light 2.0A ~ 2.5A

Light


Min

Light 60%Max~Max

Light


Min

Light 30%Max~Max

Light


Min

Light 15%Max~Max

Light


Light 20%Max~Max

Appendix: Test Plan

84 336521 - 001

Table 47. 230V/50Hz @ 10 kHz Dynamic Load Test Scenarios

Freq-uency

AC Input

DC Output

5V 3.3V -12V 5VSB 12V1 12V2 12V3/V4

10 KHz 230V/ 50Hz

Min~

30%Max

Min

70% Max ~Ma

x

Light

Light Min~ 30%Max

Min

Light 70% Max

~Max

Light

Min 0A ~ 0.1A

Min

Light 0.2A ~ 0.3A

Light

Min 0A ~ 0.5A

Min

Light 2.0A ~ 2.5A

Light


Min

Light 60%Max~Max

Light


Min

Light 30%Max~Max

Light


Min

Light 15%Max~Max

Light


Light 20%Max~Max

Appendix: Test Plan

336521 - 001 85

16.4 Timing

16.4.1 Timing – T0 to T6 – REQUIRED

References Sections in PSU DG – Section 3.3; Section 3.3.1; Section 3.3.3 and Section 3.3.6

Test Condition:

• Test the power supply at AC input line and Full/Light loadings.

• There must be a smooth and continuous ramp of each DC output voltage from 10% to 95% of its final set point

Pass Criteria:

Table 48. Timing (T0 to T6) Pass Criteria


Value

Required

Recommended for


Recommended for


T0 AC power on time <2s - -

T1 Power-on time < 500ms < 200ms <150ms

T2 Rise time 0.2 – 20 ms - -

T3 PWR_OK delay 100* – 500 ms 100ms* – 250 ms 100ms* – 150ms

T4 PWR_OK rise time < 10 ms - -

T5 AC loss to

PWR_OK hold-up time

> 16 ms - -

T6 PWR_OK inactive to DC loss delay > 1 ms - -

Test Scenarios:

Table 49. Timing (T0 to T6) Test Scenarios – (Gray Boxes no Pass Criteria)

AC Input

DC Load

Voltage Rail

T0 T1 T2 T3 T4 T5 T6

115V / 60 Hz

Light (20%)

+5V Yes Yes Yes Yes Yes

+3.3V Yes Yes Yes Yes Yes

-12V

+5VSB Yes

+12V1 Yes Yes Yes Yes Yes

Appendix: Test Plan

86 336521 - 001

AC Input

DC Load

Voltage Rail

T0 T1 T2 T3 T4 T5 T6


PWR_OK Yes

Full (100%)



-12V

+5VSB Yes



PWR_OK Yes

230V / 50Hz

Light (20%)



-12V

+5VSB Yes



PWR_OK Yes

Full (100%)



-12V

+5VSB Yes



PWR_OK Yes

16.4.2 +12VDC/+5VDC/+3.3VDC Power Sequencing Test – REQUIRED


Test Condition:

• Test the power supply at AC input line and carry out these test under full/Typical/Light loads.

Pass Criteria:

• The +12VDC and +5VDC output levels must be equal to or greater than the +3.3VDC output at all times during power-up and normal operation.

Appendix: Test Plan

336521 - 001 87

- The time between +12VDC/+5VDC output reaching its min in-regulation level and +3.3VDC reaching its min in-regulation level must be <= 20ms

Test Scenarios:

Table 50. 12VDC/5VDC/3.3VDC Power Sequencing Test Scenarios

AC Input DC Output Load Conditions

115V / 60Hz

Light (20%) Load

Typical (50%) Load

Full (100%) Load

230V / 50Hz

Light (20%) Load

Typical (50%) Load

Full (100%) Load

16.4.3 Hold Up Time – REQUIRED


Test Condition:

• Test the power supply at 115Vac/47Hz and 230Vac/47Hz inputs and carry out these tests under full loads.

Pass Criteria:

• The DC Voltage Rails shall stay above minimum value for a time greater than or equal to 17ms, comes from (T5) 16ms + (T6) 1ms, at maximum continuous output load condition.

Test Scenarios:

Table 51. Hold Up Time Test Scenarios

AC Input DC Output Load Conditions

115V / 47 Hz Full (100%) Load

230V / 47 Hz Full (100%) Load

16.5 Output Protection

16.5.1 Short Circuit Protection (SCP) – REQUIRED


Test Condition:

• Test the power supply at AC input line and carry out these test under minimum loads.

Appendix: Test Plan

88 336521 - 001

• Basic testing is each DC Output Voltage rail shorted to ground. Advanced testing is each DC Output Voltage rails shorted to another voltage rail.

Pass Criteria:

• The main outputs shall shutdown and latch off, but the +5Vsb shall remain normal, if any of the outputs are shorted to the secondary common (R < 0.1Ω) or if outputs are shorted between other outputs. All outputs shall be shut down if there is a short circuit on the +5Vstb. Capable of a continuous short circuit and No damage shall result.

Test Scenarios:

Table 52. Short Circuit Protection Test Scenarios

Ac Input

Short Rail To

5V 3.3V -12V 5VSB 12V1 12V2

115V / 60Hz

GND Yes Yes Yes Yes Yes Yes

3.3V Yes

-12V Yes Yes

5VSB Yes Yes

12V1 Yes Yes Yes Yes


230V / 50Hz

GND Yes Yes Yes Yes Yes Yes

3.3V Yes

-12V Yes Yes

5VSB Yes Yes



16.5.2 Over Current Protection (OCP) – REQUIRED


Test Condition:

• The load is increased on one output from its maximum value at increments of 0.1A, to the max rated current value for the equipment used for testing. The is done while the other outputs are kept to the minimum value. The test is repeated at different input voltages. For testing purposes, the overload currents should be ramped at a minimum rate of 10A/sec starting from rated load.

Pass Criteria:

• Overload currents applied to each tested output rail will cause the output to latch into the shutdown state and no damaged will occur to the PSU. As tested by it is able to turn back on after the test.

Appendix: Test Plan

336521 - 001 89

Test Scenarios:

Table 53. Over Current Protection Test Scenarios

Ac Input 5V 3.3V -12V 5VSB 12V1 12V2

115V / 60Hz

Max Min

Min Max Min

Min Max Min

Min Max Min

Min Max Min

Min Max

230V / 50Hz

Max Min

Min Max Min

Min Max Min

Min Max Min

Min Max Min

Min Max

16.5.3 Energy Hazard Safety Criteria (240VA) - RECOMMENDED

References Sections in PSU DG – none

Test Condition:

• The load is increased on one output from its rated value to an estimated current value which reaches 240VA output power in several steps and maintain at that power for 60s, while the other outputs are kept to the minimum value. The test is repeated at different input voltages. For testing purposes, the overload currents should be ramped at a minimum rate of 10A/sec starting from rated load.

• For each rail’s output current reaching the power of 240 VA, here is the reference value.

Table 54. DC Load Current Values to Reach 240VA

Rail 5V 3.3V 12V1 12V2

Current Setting to reach 240VA

48A 73A 20A 20A

Pass Criteria:

• The output power cannot reach 240VA or be maintained at 240VA for 60s.

Test Scenarios:

Appendix: Test Plan

90 336521 - 001

Table 55. Energy Hazard Safety Criteria (240VA) Test Scenarios

Ac Input 5V 3.3V -12V 5VSB 12V1 12V2

115V / 60Hz

240VA Min

Min 240VA Min

Min 240VA

Min 240VA

230V / 50Hz

240VA Min

Min 240VA Min

Min 240VA

Min 240VA

16.6 Test Plan Tables and Test Criteria - RECOMMENDED The Intel® Test Plan tables are used for two main purposes. The first purpose is to show what loading criteria of what Intel will use for these 4 sizes of power supplies as part of this Test Plan. This leads to the second purpose of the tables, these are recommended loading values between the 6 voltage rails of an ATX Power Supply at these total power levels. We understand that power supplies with a smaller or larger wattage level do exist, but these tables are recommended for standard, mainstream desktop computers. Smaller power supplies can be great options for purpose built computers with minimal expandability. Larger power supplies can leverage the 450 Watt Table as a minimum level for each power rail and then expand beyond that based on the loading conditions of computers that need that much power.

Table 56. Test Plan Tables and Test Criteria – 300 Watt

Output Rail 5V 3.3V -12V 5VSB 12V1 12V2

Min Load 0.2 0.1 0 0 0.1 0.05

Full (100%) Load 8.6 9.1 0.24 2.0 6.5 11.3

Rated Load / Max (Continuous) Load

15 16 .3 3 8 14

Peak Load 3.5 18

Total Combined Output of 3.3V and 5V is 90W

Total Combined Output of both 12V Rails is 264W.



Min Load 0.2 0.1 0 0 0.1 0.05

Full (100%) Load 9.6 10.2 0.25 2.0 8.2 13.1

Appendix: Test Plan

336521 - 001 91


Max / Rated Load 15 16 .3 3.0 10 16

Peak Load 3.5 18





Min Load 0.2 0.1 0 0 0.1 0.05

Full (100%) Load 10.1 13.4 0.24 2.0 11.8 12.6

Max / Rated Load 15 20 .3 3.0 15 16

Peak Load 3.5 18





Min Load 0.2 0.1 0 0 0.1 0.05

Full (100%) Load 10.6 14.1 0.25 2.1 14.9 13.2

Max / Rated Load 15 20 .3 3.0 18 16

Peak Load 3.5 18



Above 450 Watt the power supply will be tested according to the sticker (Nameplate) value on the power supply if all current levels are above the 450 watt level.

Appendix: Test Plan

92 336521 - 001

16.7 Intel Test Lab Test Equipment - OPTIONAL Table 60. Intel® Test Lab Test Equipment

Manufacturer Model # Description

Chroma* CSS8000-252B Complete Rack

Chroma* 66202 AC Digital Power Meter

Chroma* 61604 Programmable AC Source

Chroma* 63600-5 DC Load Mainframe

Chroma* 63640-80-80 High Speed DC Loads – 400 Watt max

Chroma* 63630-80-60 High Speed DC Loads –(300 Watt max)

Chroma* 63630-80-20 High Speed DC Loads – used for 5VSB and -12V rails (100W max each side)

Chroma* 12061 Digital Multi Meter

Chroma* 80612 Short Circuit-OVP Tester

Chroma* 80611 Timing and Noise Analyzer

Chroma* 80611N Noise Card

Chroma* 62006P-600-8 Programmable DC Power Supply

Tektronix* DPO 2024B Oscilloscope

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