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TPS7B81-Q1: EN pin reaction time

Piotr F.
Intellectual 2580 points
Part Number: TPS7B81-Q1

TI Team,

Customer needs to toggle TPS7B81-Q1 EN pin, to indicate system faulte mode.

Is there any filtering/deglitch circuit inside IC at the EN function? 

  • 0
    TI__Mastermind 42355 points

    Hi Piotr,

    I looked at the design and I did see a filter/deglitch circuit. I estimated ~1us for the deglitch time, and verified on the bench (at room temp) that this was correct. Note, however, that a 1us pulse on EN does not actually turn off the output because there is not sufficient time for the output capacitor to discharge before the device is turned back on. 

    Regards,

    Nick