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TPS2HCS10-Q1: question about Overcurrent Protection and Capacitive Load Charging function

Jay wang
Expert 3221 points
Part Number: TPS2HCS10-Q1

Tool/software:

hi expert 

i saw the following chapter and picture in our datasheet.

i have the following questions, pls check and share your comments.

Q1: how do TPS2HCS10 distinguish "overcurrent event" and "capacitive load charging event"?

assuming a situation: if an overcurrent event happens in just power-up stage, how do IC distinguish and do related behave?

Q2: how to set Icapchrg value and Icl value?

  • +1
    TI__Mastermind 29230 points

    Hi Jay,

    1. Overcurrent event is after the inrush period occurs, if there is one. In that case, the device will immediately shut down.

    Capacitive load charging event is during the inrush period. The inrush period can be programmed from 0-100ms and the current can be programmed to clamp at a certain value.

    If there is an overcurrent event that happens during IC power up and there is an inrush period programmed, the device will clamp the current. If there is no inrush period programmed, the device will immediately shut off.

    2. These can be programmed via the INRUSH_LIMIT_CHx and ILIMIT_SET_CHx register fields, respectively. The inrush duration can be programmed via the INRUSH_DURATION_CHx fields.

    Thanks,

    Patrick