e522.51/52 multiple power supply demonstration board … · e522.51/52 multiple power supply...

Elmos Semiconductor AG Application Note QM-No.: 25AN0132E.00

E522.51/52 Multiple Power Supply Demonstration Board AN 0132Nov 24, 2015

1/7

1 What you get:1. E522.51/52 demonstration board

2. Demoboard description (this document)

1. Power Supply Unit, capable of at minimum 3A 50 ms pulse and 40V max. output voltage

2. One or more load resistors of min.1.5A load current carrying capacity (values depending on the output voltages of the

regulators (see section “Features of the Demoboard”) or multichannel active load

3. One or more (digital) voltmeters and ampmeters

4. Optional: oscilloscope (4-channel or more preferred)

AK1: Power supply and Ground (positive terminal VBAT)

AK2: output of the 1st buck converter

AK3: output of the 2nd buck converter

AK4: output of the 1st LDO

AK5: output of the 2nd LDO

AK6: output of the 3rd LDO

AK7: output of the 4th LDO

X1: SPI connector (to external µC)

X2: IC control and monitoring signals

X3: auxiliary outputs of regulators Buck 1, Buck 2, LDO1 – LDO4

X4: IC control signals

2 What you need to start:

3 Connectors

Figure 1. Demoboard

2/7Elmos Semiconductor AG Application Note QM-No.: 25AN0132E.00


4 JumpersJP1: 1st LDO input selector

JP2: LDO parallelization of LDO2 – LDO4

JP3: VIO source selector

J2: input voltage source selector for LDO4



ON1: activation of 1st buck converter

ON2: activation of 2nd buck converter

ON_P: repetitive activation of both buck converters (remote control)

LD1: Power Good signal (active only with VIO setting)

LD2: IC activation (output of the on-board pulse generator, ON_P status)

The E522.51/52 multiple Power Supply demoboard operates with output currents of up to 1.5A. When load resistors are con-

nected to the outputs, the output current can cause the load resistors become hot during demoboard operation!

Handling and operating the demoboard assembly is only allowed in an ESD protected workplace. Follow the instructions to set

up and operating exactly to avoid failures or damages of the demoboard.

The E522.51/52 multiple Power Supply demoboard provides up to 6 separate output voltages to external loads. On the AK2 to

AK7 connectors, the output voltages are available. It is possible to interconnect the outputs of the LDO’s to achieve higher out-

put current (parallelization) by setting JP2. Depending on the programming of the E522.51 resp. E522.52 for the desired appli-

cation, the activation of the buck converters is possible by an on-board pulse generator in an ON/OFF cycle of 1s ON- time and

0.5s OFF-time. The output voltage settings (level, Power sequencing, current limitation and activation control) are internally

programmed and application- tailored. The SPI can be used to analyze status information and to control the IC behavior in a

predetermined characteristic. For monitoring and measuring the output voltages, an auxiliary output pin header is available.

IC control and status information can be captured at the X2 and X4 connector. For further information of parameter settings,

refer to the E522.51/52 data sheet.

JP1: LDO1 input voltage selector

1-2 LDO1 input connected to Buck converter 2 output

3-4 LDO1 input connected to Buck converter 1 output

5-6 LDO1 input connected to VBAT

JP2: LDO parallelization

1-2 LDO3 || LDO4

3-4, 5-6 LDO2 || LDO3 || LDO4

5-6 LDO3 || LDO4

JP3: VIO source selector (the JP3 jumper setting determines the voltage level of the µC interface)

1-2 VIO connected to Buck 2 output

2-3 VIO connected to LDO1 output

J2: LDO4 input selector

1-2 LDO4 input connected to Buck 2 output


5 Indicators

6 Safety precautions

7 Features of the demoboard

8 Jumper settings



1. Connect the outputs to external load resistors and to the measuring instruments

2. Set the jumpers accordingly to the desired application

3. Connect the input to the PSU.

4. Double-check that everything has been connected and settled correctly

5. Turn the Power Supply Unit on.

Observe the output voltages and /or the output currents (Power sequencing can be observed by a scope)







ON1: (static) buck converter 1 activation

ON2: (static) buck converter 2 activation

ON_P: Both ON- inputs connected to the on-board pulse generator

9 Start of operation:



10 Circuit diagram of the Demoboard:

Figure 2. Schematic



Figure 3. PCB top view

11 PCB assembly



Used Pos.-No. Value Order-No. Supplier Remark Manufacturer

4 ON1,ON2,ON_P,JP3 JP02, ASL050G Schukat broken pin header sin-

gle RM2.54 MPE Garry

5 JP1,JP2,J2,J3,J4 JP03R ASL050G Schukat broken pin header sin-gle RM2.54 MPE Garry

2 X1,X4 X03X2DR 45110-26400009000-ND (broken) Digikey broken pin header dual

RM2.54 MPE Garry

1 X2 X04X2DR 45110-26400009000-ND (broken) Digikey broken pin header dual

RM2.54 MPE Garry

1 X3 X06X2DR 45110-26400009000-ND (broken) Digikey broken pin header dual

RM2.54 MPE Garry

7 AK1,AK2,AK3,AK4,AK5,AK6,AK7 AK130/02 ARK130/2 Schukat RM5.08 PTR Messtech-

nik2 C2,C3 330p 311-1192-1-ND Digikey X7R, 0805 Yageo1 C19 1.5n/50V 1276-1794-1-ND Digikey X7R, 0805 Samsung1 C7 10n/50V 399-1158-1-ND Digikey X7R, 0805 Kemet

8 C1,C4,C5,C6,C13,C17,C21,C33 100n/50V 445-1349-1-ND Digikey X7R, 0805 Kemet

3 C12,C14,C15 470n/10V 399-9247-1-ND Digikey X7R, 0805 Kemet1 C22 1µ/10V 399-6997-2-ND Digikey X7R, 0805 Kemet2 C8,C9 4.7µ/10V 445-1605-1-ND Digikey X7R, 0805 TDK1 C10 10µ/10V 1276-2934-1-ND Digikey X7R, 0805 Samsung3 C16,C20,C32 22µ/10V 445-7615-2-ND Digikey X7R, 0805 TDK2 C11,C23 22µ/10V 1276-3146-1-ND Digikey X7R, 1206 Samsung

5 C27,C28,C29,C30,C31 100µ/10V 493-2165-1-ND Digikey 6.3 x.6.3 Nichicon

1 C25 100µ/16V 493-4593-1-ND Digikey 6.3 x.6.3 Nichicon2 C18,C24 100µ/50V PCE3917CT-ND Digikey 8 x 10 Panasonic1 C26 220µ/6.3V PCE3742CT-ND Digikey 6.3 x.6.3 Panasonic1 R19 100R RMCF0805JT100RCT-ND Digikey 0805 Stackpole1 R11 200R RMCF0805JT200RCT-ND Digikey 0805 Stackpole2 R7,R16 820R RMCF0805JT820RCT-ND Digikey 0805 Stackpole1 R14 3k3 RMCF0805JT3K30CT-ND Digikey 0805 Stackpole1 R1 8k2 RMCF0805JT8K20CT-ND Digikey 0805 Stackpole4 R4,R8,R9,R21 10k RMCF0805JT10k0CT-ND Digikey 0805 Stackpole1 R3 12k RMCF0805JT12k0CT-ND Digikey 0805 Stackpole1 R2 14k RMCF0805JT14k0CT-ND Digikey 0805 Stackpole4 R10,R15,R17,R18 18k RMCF0805JT18k0CT-ND Digikey 0805 Stackpole2 R5,R6 82k RMCF0805JT82k0CT-ND Digikey 0805 Stackpole1 R20 1M RMCF0805JT1M0CT-ND Digikey 0805 Stackpole2 R12,R13 1M2 RMCF0805JT1M20CT-ND Digikey 0805 Stackpole1 D3 5.6V 568-39-797-1-ND Digikey SOD80C NXP1 Q1 2N7002 2N7002NCT-ND Digikey SOT23 Fairchild Semi1 Q2 BC846BSMD 568-6060-1-ND Digikey SOT23 NXP1 D1 ES2D 641-1150-1-ND Digikey SMB Comchip1 D2 SS24 SS24T3GOSCT-ND Digikey SMB ON Semi

6 D5,D6,D7,D8,D9,D10 1N4148 CDSSC4148N-G-ND Digikey 0805 Comchip

2 LD1,LD2 ChipLED 475-1410-1-ND Digikey 0805 OSRAM1 IC1 NE555 NE555S-14DICT-ND Digikey SOIC-8 Diodes Inc.1 IC2 522.51 E522.51 Elmos QFN48L7 Elmos

1 L2 LPS6225-223 Direct call Coilcraft sample request Coilcraft1 L1 MSS1038-683 Direct Call Coilcraft sample request Coilcraft1 L3 74479885147 732-3026-1-ND Digikey 0805 Würth

12 Bill of Materials (BOM)



Elmos Semiconductor AG – Headquarters

Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany

Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 159

[email protected] | www.elmos.com

Note Elmos Semiconductor AG (below Elmos) reserves the right to make changes to the product contained in this publication without notice. Elmos assumes no responsibility for the use of any circuits de-scribed herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. Elmos does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications.

Copyright © 2015Elmos Reproduction, in part or whole, without the prior written consent of Elmos, is prohibited.

Elmos Semiconductor AG provide the E522.51/52 Demonstration Board simply and solely for IC evaluation purposes in laboratory.

The Kit or any part of the Kit must not be used for other purposes or within non laboratory environments. Especially the use or

the integration in production systems, appliances or other installations is prohibited.

The pcb s are delivered to customer are for the temporary purpose of testing, evaluation and development of the Elmos IC s only.

Elmos will not assume any liability for additional applications of the pcb.

Elmos Semiconductor AG shall not be liable for any damages arising out of defects resulting from (1) delivered hardware or soft-

ware, (2) non observance of instructions contained in this document, or (3) misuse, abuse, use under abnormal conditions or

alteration by anyone other than Elmos Semiconductor AG. To the extend permitted by law Elmos Semiconductor AG hereby ex-

pressively disclaims and user expressively waives any and all warranties of merchantability and of fitness for a particular purpose,

statutory warranty of non-infringement and any other warranty or product liability that may arise by reason of usage of trade,

custom or course of dealing.

Usage Restrictions

Disclaimer

e522.51/52 multiple power supply demonstration board … · e522.51/52 multiple power supply...

Documents