• TPS40422: Design review

  

  JH Shin

  TI Thinks Resolved

  Part Number: TPS40422 Other Parts Discussed in Thread: CSD87350Q5D , Hello, My customer has a problem with the power MOSFET CSD87350Q5D used to build the TPS40422 circuitry being damaged in the field. When only CSD87350Q5D was replaced, the same symptom…

  • over 2 years ago
  • Power management
  • Power management forum

• TPS40422: TPS40422

  

  Anurag Jagota

  TI Thinks Resolved

  Part Number: TPS40422 Hi! I am trying to understand how to drive the Buck Converter using this controller (TPS40422) in Sink mode> Thanks Anurag

  • over 3 years ago
  • Power management
  • Power management forum

• TPS40422: DCR sense

  

  user5951090

  TI Thinks Resolved

  Part Number: TPS40422 Other Parts Discussed in Thread: TPS40322 , can you share the TPS40422/TPS40322 DCR sense design workbook with me? I have 12Vin 1.2Vo, 7.5A application, 1uH (4.2mohm DCR), 400khz fsw, want to use 0.1uF and 2.37K for DCR sense, pls…

  • over 3 years ago
  • Power management
  • Power management forum
Answered

• TPS40422: Temperature Sense Transistor Selection Guide

  

  Allan Fan

  Resolved

  Part Number: TPS40422 Hi Expert, Customer would like to choose temperature sense transistor 2nd source of MMBT3904 which we used on the EVM. Could you please share what parameters should we consider when select the transistor? Thanks. Allan

  • Resolved

  • over 3 years ago
  • Power management
  • Power management forum
Answered

• TPS40422: TPS40422/25/28 SMB_ALERT status

  

  Neo.Wang

  Resolved

  Part Number: TPS40422 Hi TI Expert, what's the status of SMB_ALERT status on TPS40422/25/28? is it open drain and need external pullp-up? i can't find the description from datasheet. Thanks.

  • Resolved

  • over 4 years ago
  • Power management
  • Power management forum

• TPS40422: Converting XML to CSV format using Fusion GUI for TPS40422

  

  Madhura Gogate

  TI Thinks Resolved

  Part Number: TPS40422 For TPS40422, In Fusion GUI, XML files needs to be converted to CSV files. Could you please share the procedure for the same? Is there any method to do the conversion offline? TPS40422

  • over 4 years ago
  • Power management
  • Power management forum
Answered

• TPS40422: Could you review schematic for TPS40422?

  

  Downey Kim

  Resolved

  Part Number: TPS40422 Other Parts Discussed in Thread: CSD87350Q5D , TPS40322 Hi TI experts, My customer has requested a SCH review for TPS 40422. For external fet, CSD87350Q5D was applied. Attached the schematic and inductor datasheet. xcu_power_sch.pd…

  • Resolved

  • over 4 years ago
  • Power management
  • Power management forum

• TPS40422: Power supply with TPS40422 short currnet test issue

  

  HC Chen

  TI Thinks Resolved

  Part Number: TPS40422 Hi PS: we set the per phase current limit 22A, so total current limit is 44A. Why the Short Then On test the current is so match high(85A) than OCP and On Then Short test? Why the negative voltage spike of -1.4V for ~60us, does…

  • over 4 years ago
  • Power management
  • Power management forum

• TPS40422: About crossover frequency pass criterion in the Bode plot measurement

  

  April Chou1

  TI Thinks Resolved

  Part Number: TPS40422 Hi Experts, I have seen some documents that will define the pass criterion of the crossover frequency(Fco), for example, Fsw/30<Fco<Fsw/5. I want to know whether this pass criterion is necessary? In my result, both the gain margin…

  • over 4 years ago
  • Power management
  • Power management forum

• TPS40422: Default value of PMBus page

  

  Shenhua Zhang

  TI Thinks Resolved

  Part Number: TPS40422 Customer would like to know about TPS40422, do we have default value for PMBUS page? For example, when we read voltage value without writing into 'page', is it 'page 0' by default?

  • over 4 years ago
  • Power management
  • Power management forum

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