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  • TPS40422: CH2 output failure

    Part Number: TPS40422 Hello, My customer has a problem that the output of the TPS40422 CH2 below does not operate normally during production. TPS40422.pdf Failure symptom is as follows. 1. A drop in the 5V output voltage of Phase 2 occurred in some parts…
    • Answered

  • TPS40422: CH2 output failure

    Resolved
    Part Number: TPS40422 Hello, My customer has a problem that the output of the TPS40422 CH2 below does not operate normally during production. TPS40422_SCH_2022.11.30_2.pdf When they replaced the TPS40422 with another or changed the C22 capacitor value…
    • Resolved

  • TPS40422: Disable Temperature Sensing Function

    TI Thinks Resolved
    Part Number: TPS40422 Hi expert, Customer has a product in production for years used TPS40422 and got some failure returns showing OT fault however it's just room temperature. They found out it was due to the BJT aging cause the Vo become good once a…

  • TPS40422: Thermal resistance Rjc & Rjb

    TI Thinks Resolved
    Part Number: TPS40422 Hi All, Can someone help with the details of thermal resistance values (Rjc, Rjb) for TPS40422? I verified the data sheet, this information is missing in it. I would recommend TI to verify and add the thermal info to data sheet. …

  • TPS40422: -

    Part Number: TPS40422 Hi, I want to understand the current consumption of TPS40422 device. Application details: 1. Driving external MOSFET 2. Vout1 & Vout2, different voltage rails. 3. Output current: ~20A each 5. BP3/BP6 regulators , no external…

  • RE: TPS40422: Design review

    Hi JH, Here is my explanation: 1- overshoot/undershoot and ringing caused by parasitic inductances and capacitances from power FETs and PCB layout 2- Overshoot/undershoot and ringing are more severe with fast switching edge 3- Overshoot/Undershoot and…

  • TPS40422: TPS40422

    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

  • TPS40422: DCR sense

    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…
    • Answered

  • TPS40422: Temperature Sense Transistor Selection Guide

    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
    • Answered

  • TPS40422: TPS40422/25/28 SMB_ALERT status

    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

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