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DRV8701: Current Sense Delay

Matthew Force
Prodigy 30 points
Part Number: DRV8701

Is there a way of delaying (or blanking) the overcurrent detection for a predictable amount of time?  I would like to allow for a turn-on surge before starting current chopping.

  • +1
    TI__Mastermind 18365 points

    Hi Matthew, 

    For OCP, the deglitch time is not adjustable. That is the time for which the overcurrent has to last to trigger the fault. In the second part of the question, you are referring to current regulation. Here is a good resource explaining the difference:

    BMS – Power Tools (ti.com)

    There is t_blank time where the current sense circuitry is disabled. It is 25 us. How long does your inrush last ?

    Current regulation can also be fully disabled as follows:

    Best,

    Keerthi