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TPS62170-Q1: Current limit in startup

Johnny Guo
Expert 4910 points
Part Number: TPS62170-Q1

Hi, team,

Could you help check what is the current limit when TPS62170-Q1 startup? In datasheet, the current limit is 1.05A typical for static current limit.

In my customer's test, the startup peak current is read like to be ~580mA, it likes to touch current and causes Vout drop.

Thanks.

Johnny

  • 0
    TI__Expert 3135 points

    Hi Johnny,

    Could you please provide more details inclusive of the experimental waveforms of the switching node Vx, the inductor current iL and the output voltage Vo?

    Kevin

    If this answers your question, Please click "This resolved my issue" button.
    ____________________________________________
    TPS62810-Q1 – New Automotive 6Vin, 2.25MHz buck family with 1% accuracy and SYNC-pin. 1-2-3-4A options.
    Smallest 2x3QFN package with wettable-flanks for optical PCB inspection.

  • 0 in reply to Kevin-Cheng
    TI__Expert 3135 points

    Hi Johnny,

    Is there any update about this question? if not, I will close this ticket, thanks !

    Best Regards,

    Kevin

    If this answers your question, Please click "This resolved my issue" button.
    ____________________________________________
    TPS62810-Q1 – New Automotive 6Vin, 2.25MHz buck family with 1% accuracy and SYNC-pin. 1-2-3-4A options.
    Smallest 2x3QFN package with wettable-flanks for optical PCB inspection.

  • 0 in reply to Kevin-Cheng
    TI__Expert 4910 points

    Kevin,

    Now we are in debug of system other power, currently no focus on TPS62170-Q1 side. Thanks.

    Johnny