maxim motor control solution - eccn.com
TRANSCRIPT
Maxim Motor Control Solution ---Frank Fang, CPG AE, Sept 2015
| Maxim Integrated | Company Confidential
Topics
• Diagram Introduce
• Encoder interface
• Motor Driver
• Current Sense
• Interface(RS485/DI/DO)
• Isolator
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MAX11190 Competitive Comparison
Specifications MAX11190 Competitor 1 Competitor 2
Size 9mm2 16mm2 25mm2
Number I/Ps 4 8 4
SNR 73dB 71dB 70dB
Power 10.4mW 45mW 26mW
Reference External 2.5V, 50ppm/oC 2.048V, 6ppm/oC
Sample Rate per ADC 3MSPS 2MSPS 3MSPS
THD -75dB -76dB -77.5dB
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16-Bit, 250ksps, +5V Unipolar Input SAR ADC with Internal Reference in TDFN-12 • MAX11165/6
Improves DC and AC accuracy
Improves signal integrity
Improves noise immunity
Saves cost and simplify design
Saves space
Benefits
±0.5LSB INL (typ), 93db SNR
+5V unipolar input range
Pseudo differential, 78dB CMR
Internal reference and buffer
3 x 3 mm TDFN package
Features
Test and measurement
Automatic test equipment
Industrial control systems
Medical instrumentations
Narrow band receivers
End Applications
MAX14890 Incremental Encoder Interface for RS-422, HTL and TTL with Digital Inputs
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Customer Challenges and Problems Solved
Challenges
• Increasing Factory Uptime for Motion Control Applications > System Robustness and Improved reliability
> Flexibility on the motor controller to communicate with various encoders
> Fault Protection/Detection
> Faster Data Rates for faster communication feedback and increased throughput
Maxim’s Solution
• The MAX14890 provide’s the industry’s most robust, highest performance, and most flexible solution for incremental encoder receivers
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MAX14890 - Incremental Encoder Receiver Robust Quad RS-422/TTL/HTL Receivers + 2 DI
Applications
Motion controller
Encoder Interface
Pulse Counter Module
Servo Controller Commutator
Features
4 RS-422/TTL/HTL Receivers
2 SE-DI/TTL Receivers
±40V Fault Protection
±20V CMR Range
Fault Detection (Open, short, over/under)
Up to 35Mbps
Benefits
Reduces SKU’s with flexible RS-422, TTL, HTL encoder interfaces
Eliminates 2 external DI
Integrated Robustness eliminates $0.40 in circuitry
Fault Detection eliminates a 2nd IC used for redundancy
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Quad Fault-Protected RS-422 Receiver with Fault Detection: MAX14891
Features
Four RS-422 / RS-485 Receivers 35Mbps RS-422 data rates ±40V Fault Protection, ±20V CMR Open Wire, Short and OV Fault Detection 1.6V to 5.5V Logic Interface IEC-61000-4-2 ESD:±10kV Air, ±7kV Contact TQFN20 4mm x 4mm Package
-40°C to +125°C Operating Temp
Applications
• Servo Motor Control
• Incremental Encoder Interfaces
• Motor Control
Benefits
Integrated Robustness eliminates $0.40 in external protection circuitry
Integrated Fault detection increases uptime and eliminates redundancy circuitry
Fastest Date Rates enable increase data rates for improved production throughput
Compelling Story MAX14890 Competitor 1 Competitor 2
Fault Protection
±40V None None
Fault Detection Yes None -10 to +15
ESD ±10KV Air Gap/±Contact ±2KV ±6KV
Common Mode Voltage ±20V ±7V -7 to +12
Channels 4 4 4
Package 5x5 TQFN 16 SOIC 16 SOIC
Data Rates 35Mbps 10Mbps 50Mbps
Low Logic Yes 1.6-5V No No
TTL/HTL Support Yes No No
2 DI Yes No No
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Solution BOM Comparison
Maxim MAX14891
Competitor $1.16
ESD $0.20
Fault Protection $0.32
TTL Circuitry $0.50
HTL Circuitry $0.50
2 DI $0.34
Vl Pin $0.15
Total BOM $3.17
Competitor
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MAX14891 Competitor part Fault Detection
6 TVS Diodes for ESD Fault Protection
(resistors/zener diodes
• 20X smaller solution • 20X less protection components • Most Flexible and Robust design
TTL Circuitry
HTL Circuitry
DI
DI
MAX14870/71/72 4.5-36V 2.8A DC Brushed Motor Drivers
| Maxim Integrated | Company Confidential 16
Customer Challenges and Problems Solved
Challenges
• The trend for DC brushed motors designs include becoming smaller, running cooler, running more
efficiently, reducing EMI, and simplifying designs
Maxim’s Solution
• The MAX14870/82 provides the industry’s smallest 4.5-36V DC brushed motor drivers that are 2X space
savings, dissipates 3X less power, reduces EMI with slew rate limiting, and uses a charge pump less
design to reduce design complexity and the footprint. The MAX14871 features a 25% ripple current
regulation to enable simple autonomous current regulation.
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Typical Application Diagram:
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Industry’s Smallest 4.5-36V DC Brushed Motor Driver/Relay Driver MAX14870/2/1 – Run Cooler, Longer, with Simplified Designs
Advantages
• Smallest H-Bridge driver saves 2X board space
• 3x Lower Ron saves 3X power dissipation to run cooler
• Widest 4.5-36V supply voltage runs longer on battery power
Applications
• POS ATM printers/micro printers
• Toys
• Coffee machines
• Cash counters / vending machines
• Remote disconnect for power meter
Features
• 2.5A peak motor current
• 0.4Ω Total typ (HS+LS) Ron
• 3x3 TDFN
• Short circuit protected to GND/Vcc
• Integrated current limiting
• Slew rate control reduces EMI
• Fast/Slow Decay Modes
3x3 TDFN
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* FWD and REV pins on the MAX14872
Brushed DC + Relay Driver Applications: Single H-Bridge
Micro Printer Coffee Machine
Robots Locks Vending Machine/Coin Dispensing
Machines
Cash Counter
Power Meter Remote Disconnect + Latched Relay
Driver
20 | Maxim Integrated | Company Confidential
175V/2A, High-Speed,Half-Bridge MOSFET Drivers ---MAX15012/3
Applications
• Telecom Half-Bridge Power Supplies
• Two-Switch Forward Converters
• Full-Bridge Converters
• Active-Clamp Forward Converters
• Motor Control
Features
• 2A Peak Source and Sink Current Drive Capability
• Up to 175V Input Operation
• 8V to 12.6V VDD Input Voltage Range
• 35ns Typical Propagation Delay
• Guaranteed 8ns Propagation Delay Matching Between Drivers
• Up to 500kHz Switching Frequency
• Available in CMOS (VDD/2) or TTL Logic-LevelInputs with Hysteresis
• Low 2.5pF Input Capacitance
• Low 70μA Supply Current
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Current Sense
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Interface
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Half-Duplex RS-485-/RS-422-Compatible Transceiver with AutoDirection Control---MAX13487E/MAX13488E
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AutoDirection Enables Driver Automatically on Transmission, Eliminating an Opto of Isolation
Hot-Swap Capability to Options Optimize Designs for Speed or Errorless Data Transmission
Benefits
±15kV ESD HBM
+5V supply range
SOIC-8 package
Features
Isolated RS-485 Interfaces Utility Meters Industrial Controls Industrial Motor Drives Automated HVAC Systems
End Applications
Autopolarity RS-485 Half-Duplex 5V Transceiver • MAX14781E
Benefits
Polarity correction autonomously corrects misconnected A/B lines High ESD reduces field failures Standard SOIC8 pin out for easy
replacement
End Applications
Power meters
Industrial controls
Environmental controls
Features
Polarity adaption of miswired connections
±25KV HBM ESD
Industry standard SO8
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High-ESD and Fastest Half Duplex RS-485 • MAX14783E
Integrated ESD protection saves PCB space and 2x better than comp
Covers 2 common supplies, simplifying PS requirements
Standard pin out for easy competitor replacement, µMax-8 address Japan
Benefits
±35kV ESD HBM
+3.0V to +5.5V supply range
µMax-8, TDFN-EP8, SOIC-8 package
Features
Motion controllers
Fieldbus networks
Encoder interfaces
Environmental equipment
End Applications
Typical Half Duplex Network Standard Pin Out
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±15kV ESD-Protected, Fail-Safe, Hot-Swap Full Duplex RS-485 • MAX13083E/MAX13082E/MAX13088E
MAX13080E/MAX13081E/MAX13084E/MAX13086E/MAX13087E
Extended ESD Protection for I/O Pins ±15kV True Fail-Safe Receiver Hot-Swap Input Structures on DE and active-low RE Low-Current Shutdown Mode Enhance Slew rate limiting
Benefits
±15kV ESD HBM
+5V supply range
SOIC-8 package
Features
Motion controllers
Fieldbus networks
Encoder interfaces
Environmental equipment
End Applications
Standard Pin Out
| Maxim Integrated | Company Confidential 30
2.75kVRMS / 5kVRMS Iso RS-485 + TD Full Duplex (500Kbps to 25Mbps) MAX14853/55(2.5kVRMS)and MAX14857/59*(5kVRMS)
Benefits • Highest transceiver ESD
• Integrated LDO reduces footprint
• Most robust isolation technology
Applications
• PLCs
• Fieldbus Networks
• Telecomm
• Building Automation
Features
• 2.5/5kVRMS isolation
• Integrated Transformer Driver
• Integrated LDO
• ±35kV ESD HBM RS-485 transceiver
• W 16 SOIC Package (11x11)
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2.5kVRMS / 5kVRMS Iso RS-485 +TD Half Duplex (500Kbps to 20Mbps) MAX14940/46(2.5kVRMS)and MAX14943/49*(5kVRMS)
Benefits • Highest transceiver ESD
• Integrated LDO reduces footprint
• Most robust isolation technology
Applications
• PLCs
• Fieldbus Networks
• Telecomm
• Building Automation
Features
• 2.5/5kVRMS isolation
• Integrated Transformer Driver
• Integrated LDO
• ±35kV ESD HBM RS-485 transceiver
• W 16 SOIC Package (11x11)
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System Block Diagram
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Digital Inputs
Traditional DI Discrete Design
| Maxim Integrated 35
Compared to discrete alternatives, MAX31910-MAX31915:
1. Reduces power/heat dissipation up to 80% thanks to an ultra-low power mode and integrated current limiter
2. Minimizes board space up to 50% vs. discrete solutions by integrating Parallel or SPI interfaces and selectable filters
3. Enables flexible designs with SPI daisy chain solution to increase digital input channels easily
4. Robust communication and diagnostics with embedded 5-bit CRC error checking, temperature and voltage monitoring
Maxim’s Digital Input Serializers/Translators Solve These Problems An Industry-Proven Digital Input Solution
36 | Maxim Integrated
DI Comparison: Serializer, SPI Interface
Specification MAX31910 – MAX31913 Competitor 1 Competitor 2
ICC (chip supply current) 2.3mA (1.5mA typ.) 8.7mA (6mA typ.) 2.3mA (1.6 mA typ.)
VCC operating field supply voltage 7V–36V 10V–34V 10V–35V
IEC 61131-2 compliant Type 1, 2, & 3 Type 1, 2, & 3 Type 1, 2, & 3
Configurable current limit & ultra low power mode
Yes* No No
Temperature & voltage monitoring
Yes Yes Yes
Field input pins—abs max -0.3V to +45V -0.3V to +36V -0.3V to +30V
SPI port error detection 5-bit CRC 1-bit parity 4-bit parity
Min. field input pulse width 1µs 1µs 50µs
37 | Maxim Integrated
* Available for the MAX31910 and MAX31912.
Digital Outputs
Traditional DO Discrete Designs
39 | Maxim Integrated
Compared to discrete solutions, MAX14900E offers:
1. 10x to 70x faster throughput with fast propagation delay < 0.8µs in push-pull mode, and < 2µs in high-side mode
2. 20% lower power / heat dissipation with ultra-low RON: 85mΩ typical
3. Smaller board space in a small 7mm x 7mm 48-QFN-EP with parallel or serial SPI interface option
4. Integrated protection, extensive diagnostics for individual channels and global parameters, with CRC error communication
Maxim’s Digital Output High-side Switch Solves These Problems An Industry Proven Digital Output Solution
40 | Maxim Integrated
MAX14900E Competitive Comparison
Specifications Maxim MAX14900E Competitor 1 Competitor 2
RDSON (typ.) 85m 110m 150m
RDSON (max.) 165m 200m 320m
Latency turn-off (typ.) 1µs 5µs 50µs
Latency turn-on (typ.) 2µs 10µs 75µs
Push-pull driver for fast load switching
Yes No No
Integrated diagnostics Yes Yes No
Package 7mmx7mm, 48-QFN-EP 10.5mm x 10.5mm, Power SSO-36 15.9mm x 14.2mm,PG-DSO-36
Parallel/serial interface Parallel & Serial Parallel & Serial Parallel only
SPI clock frequency (max) 20MHz 5MHz N/A
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Demo Kit
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Isolator
| Maxim Integrated | Company Confidential 43
Family of Quad Channel 2.75kVRMS & 5kVRMS Digital Isolators MAX14930–MAX14937
Features
Applications
PLCs & PACs
Fieldbus networks
Telecomm
Medical systems
Benefits
1
2
4
3
16
15
13
14
5
6
8
7
12
11
9
10
VDDA
GNDA
IN1
IN2
IN3
IN4
NC
GNDA
VDDB
GNDB
OUT1
OUT2
OUT3
OUT4
ENB
GNDB
MAX14930, MAX14934
1
2
4
3
16
15
13
14
5
6
8
7
12
11
9
10
VDDA
GNDA
IN1
IN2
IN3
OUT4
ENA
GNDA
VDDB
GNDB
OUT1
OUT2
OUT3
IN4
ENB
GNDB
MAX14931, MAX14935
1
2
4
3
16
15
13
14
5
6
8
7
12
11
9
10
VDDA
GNDA
IN1
IN2
OUT3
OUT4
ENA
GNDA
VDDB
GNDB
OUT1
OUT2
IN3
IN4
ENB
GNDB
MAX14932, MAX14936
MAX14933, MAX14937
Proprietary capacitive technology provides robust isolation up to 5kVRMS
Low (1.8V) supply voltage capability enables reduced power dissipation
Directly interfaces with low voltage (1.8V) ASICs & Micros
Replaces inefficient optocouplers
One of industries widest selection of isolation voltage, speed grade and default output
Industries widest and lowest (1.71V to 5.5V) supply voltage capability
Best in class propagation delay (<10ns) and skew (<1nS)
| Maxim Integrated | Company Confidential 44
Part Selection Matrix
Suffix Legend For Package (yy)
WE = Wide body SOIC
SE = Narrow body SOIC
Part Isolation Voltage # of
Channels
# of
Inputs
V DDA
# of
Inputs
V DDB
Package
MAX14930xAyy 2750V RMS 4 4 0 N & W-SOIC-16
MAX14931xAyy 2750V RMS 4 3 1 N & W-SOIC-16
MAX14932xAyy 2750V RMS 4 2 2 N & W-SOIC-16
MAX14933Ayy 27500V RMS 2 2 2 N & W-SOIC-16
MAX14934xAyy 5000V RMS 4 4 0 W-SOIC-16
MAX14935xAyy 5000V RMS 4 3 1 W-SOIC-16
MAX14936xAyy 5000V RMS 4 2 2 W-SOIC-16
MAX14937Ayy 5000V RMS 2 2 2 W-SOIC-16
Suffix Legend For Speed Grade (x)
A = 1Mbps, output default high
B = 25Mbps, output default high
C = 150Mbps, output default high
D = 1Mbps, output default low
E = 25Mbps, output default low
F = 150Mbps, output default low
Note: MAX14933 and 14937 are available in only one speed grade of 3.4 Mbps
Wide & Narrow Body SOIC-16 Dimensions/Creepage/Clearance
Wide body SOIC-16 • D = 10.50mm max • E = 7.6mm max • H = 10.65mm max • Creepage = 8mm min • Clearance = 8mm min
Narrow body SOIC-16 • D = 10mm max • E = 4.00mm max • H = 6.2mm max • Creepage = 4mm min • Clearance = 4mm min
MAX14930-33 Competitive Comparison
Specifications Maxim
MAX14930 Competitor 1 Competitor 2 Competitor 3
Isolation Voltage (60 sec.) 2.75kVRMS 2.50kVRMS 2.50kVRMS 2.50kVRMS
Data Rate (Mb/sec) 1, 25, 150 1 & 150 25 & 150 1, 10 & 90
Supply Voltage Range 1.71 to 5.5V 2.7 to 5.5V 2.8 to 5.5V 2.7 to 5.5V
Supply Current (max @ VCC = 3.3V, data-rate=100Mbps)
Supply Current (max @VCC = 1.8V, data-rate=100Mbps)
6+28=34mA
6+19=25mA
6+18=24mA
NA
Not listed
NA
65+15=80mA
NA
Prop Delay (typ / max @ VCC =5V) 5 / 7.5ns 6 / 9.5ns ? / 23ns 27 / 32ns
Pulse width Distortion (max @ VCC = 5V) 1.0ns 2.5nS 2.0ns 2.0ns
Part-to-part skew (max @ VCC = 5V) 3.0ns 3.0nS 3.0ns 10ns
Ch.-to-ch. skew (max @ VCC = 5V) 0.9ns 1.8nS 1.0ns 2.0ns
CMTI (min @ VCC = 3.3V) 25 kV/µs 25kV/µs 25kV/µs 25kV/µs
Orange: Maxim has comparable performance
Green: Maxim has best in class performance
Thanks
| Maxim Integrated | Company Confidential 48