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TPS259827LEVM：Power management forum ( inrush current question)

Justin zhuang
Prodigy 30 points
Part Number: TPS259827LEVM

Tool/software: 

Can inrush current also refer to this picture? thanks.

  • 0
    TI__Mastermind 39145 points

    Hi! 

    I do not fully understand your question. These attached images is response from the device when overcurrent event happens. Are you asking if this response is valid during startup also? Yes it is. You can control the inrush current also by slowing down the startup by using dvdt pin.

    Best Regards,
    Arush

  • 0 in reply to Arush Gupta
    Prodigy 30 points

    this response is valid during startup also? Yes, I'm asking this question. In addition, About this circuit breaker response, Will thermal shut-down also be started before circuit breaker operation occurs? thanks.

  • 0 in reply to Justin zhuang
    TI__Mastermind 39145 points

    TSD remains valid all the time but in case of circuit breaker, the device will turn off the FET as response to over current (after the blanking timer expires) and in case of current limit, the device limits the current and this results in junction temperature rise and results in TSD. 

    During startup, we have current limiting startup or DVDT controlled startup depending on inrush current.

    Best Regards,
    Arush