ABB DJT090 Application Note Download Page 2

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Contents

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PRECAUTION

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GETTING STARTED

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Required Equipment and Accessory

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Optional Equipment and Accessory

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Eval Board Terminals/Ports

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Input/Output Cable

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Input/Output Measurement

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On-Board Pulse Load

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Input/Output Capacitor

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Address Resistor

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Enable Switch

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SYNC

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START EVM

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ON-BOARD CHANNEL CURRENT MEASUREMENT

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ON-BOARD PULSE LOAD

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LoadSlammer

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CHANNEL REDUCTION

.......................................................................................................................... 10

PMBUS COMMANDS

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PMBus Turn-on/Turn-off

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Switch between PMBus and EN control

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Parallel configuration (8 parallel)

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Parallel configuration (4 parallel)

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Q&A

............................................................................................................................................................ 13

SCHEMATIC

.............................................................................................................................................. 14

APPENDIX: DPI-CLI Script Examples

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Summary of Contents for DJT090

Page 2: ...urement 6 On Board Pulse Load 6 Input Output Capacitor 6 Address Resistor 6 Enable Switch 7 SYNC 7 START EVM 7 ON BOARD CHANNEL CURRENT MEASUREMENT 8 ON BOARD PULSE LOAD 9 LoadSlammerTM 10 CHANNEL REDUCTION 10 PMBUS COMMANDS 11 PMBus Turn on Turn off 11 Switch between PMBus and EN control 11 Parallel configuration 8 parallel 12 Parallel configuration 4 parallel 12 Q A 13 SCHEMATIC 14 APPENDIX DPI ...

Page 3: ...to use For more details refer to the product datasheet DJT090A0X43 SRPZ parallel evaluation board later refer as EVM provides user a quick start for DC and transient analysis up to 720A For transient analysis an on board pulse load is provided for ease use Alternatively LoadSlammerTM can be used at user s choice PRECAUTION The DJT090 parallel EVM can deliver up to 720A DC current Any unintended co...

Page 4: ...d pulse load control SMA connector Digikey PN ARF1963 ND or equivalent SMA to BNC cable Digikey PN ACX1717 ND or equivalent Toggle switch Digikey PN CKN1073 ND or equivalent Function Generator Multimeter LoadSlammerTM Eval Board Terminals Ports Following table and diagram illustrates all locations and purposes of all terminals ports Vin Vin Vin Vin Vou Vout Vou Vout Vout Vout ICHECK1 ICHECK2 PMBus...

Page 5: ...nt port for output current of each channel total 8 LoadSlammerTM Socket for LoadSlammerTM CHECK1 SMA socket for pulse load current read back CHECK2 Redundant SMA socket for pulse load current read back DNP M_VOUT SMA socket for output voltage measurement PMBus PMBus port for connecting to ABB USB to I2C dongle notice Pin1 location IN OUT_SYNC SMA socket for measure SYNC signal SWITCH Mechanical sw...

Page 6: ...loscope to 5mV div or below to examine ultra low ripple performance of DJT090s in parallel M_VOUT is very sensitive to ground loop noise thus while measuring the output voltage ripple the oscilloscope should be floating and can only be connect to M_Vout Don t connect the rest of oscilloscope channels On Board Pulse Load To use on board pulse load SMA connectors are recommended to be populated at I...

Page 7: ... 1 location with PC then use ABB DPI CLI tool to start the DJT090 PMBus turn on is required for the first time it can be changed to EN turn on via PMBus once the EVM is confirmed to be functional correctly All EVM board is pre configured in the factory user doesn t require to perform any additional configuration before turning on the EVM Refer to DPI CLI User Guide for detailed PMBus commands The ...

Page 8: ...tput current for user to check current sharing capability Use a Multimeter mV range to measure exact output current of each channel The conversion ratio for voltage to current is 15mV A Take extra caution while probing do not short the shunts to the measurement points Ring Connector Setup Output Ripple Vin 12V Vout 1 2V Connection Example ...

Page 9: ...on the function generator Switch to pulse mode Set frequency to 100Hz Set duty to 5 MAX on board pulse load can take maximum 40W loss reduce duty if pulse load exceeds 40W loss Set output voltage high level to desired current value using roughly 100A V ratio 1 0V 100A for 8 channel parallel EVM 5V maximum Due to cable losses and other issues use ICHECK1 as reference to verify actual output current...

Page 10: ...d its output capacitors will be disconnected to the loading point Although PMBus command can be used to disable the unused channel the existence of the unused DJT090 and its capacitance can potentially cause unwanted oscillation since all DJT090 and its output capacitance are shared a common point of load Thus use below table as a guide to disconnect unused channels Mismatched output impedance doe...

Page 11: ...tup and configure unused channels as EN startup This potentially will prevent unused channels to operate Consult local ABB FAEs for more details PMBUS COMMANDS In this application note only limited commands are included All settings must be saved to user NVM before power cycle otherwise all changes will be lost Refer to DPI CLI User Guide for detailed procedures PMBus Turn on Turn off Turn on writ...

Page 12: ... 0x0000 0x0008 180 degree 0x1A 0x0C04 0x0C06 slave 0x0000 0xA007 0x0000 0x000A 225 degree 0x1C 0x0C04 0x0C06 slave 0x0000 0xC007 0x0000 0x000C 270 degree 0x1E 0x0C04 0x0C06 slave 0x0000 0xE007 0x0000 0x000E 315 degree 0x10 is the master device the rest devices are slave 0x10 has a phase ID of 0 0x12 has a phase ID of 1 All devices are group to Rail 0 Total 8 phase is configured together for Rail 0...

Page 13: ...any device within the same DDC_GROUP must have unique rail ID Q A Q Is remote sensing supported A No optimized sense point is chosen All measurement is based on this point Refer to PCC location Q How to connect ring connector A Use one nut as a space to the board use the other one to fasten the connection Q My DC load doesn t sink the target current why A Check your DC load manual for minimum volt...

Page 16: ...Industrial We reserve the right to make technical changes or modify the contents of this document without prior notice With regard to purchase orders the agreed particulars shall prevail GE by ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document We reserve all rights in this document and in the subject matter and illustrations cont...

Page 17: ...6 w 26 1 14 w 42 1 32 w 43 1 08 w 21 1 2 W 15 M 18 W d1 SYNC_CONFIG EXT_CLOCK w d3 2007 w 37 2 w 25 1 26 w 26 1 14 w 42 1 32 w 43 1 08 w 21 1 2 W 15 M 20 d 0 1 W d1 SYNC_CONFIG EXT_CLOCK w d3 4007 w 37 4 w 25 1 26 w 26 1 14 w 42 1 32 w 43 1 08 w 21 1 2 W 15 M 22 W d1 SYNC_CONFIG EXT_CLOCK w d3 6007 w 37 6 w 25 1 26 w 26 1 14 w 42 1 32 w 43 1 08 w 21 1 2 W 15 M 24 W d1 SYNC_CONFIG EXT_CLOCK w d3 80...

Page 18: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information ABB EVAL_DJT090A0X43 SRPZ 2 module ...

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