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TPS3431: Forcing EN logic low when WDO is asserted

Robert Noe
Intellectual 440 points
Part Number: TPS3431

Hi

I would like to know what happens if EN is forced logic low when WDO is asserted (is low). Would WDO immediately go high or remains low for Trst time?

Regards,

Robert

  • 0
    TI__Genius 12630 points
    Robert,

    If EN is forced low while /WDO is asserted, the /WDO should still remain low for the remainder of t_RST because it is still returning from the active (fault) condition.

    As long as EN is low, the watchdog is disabled and WDI is ignored, and /WDO remains high once /WDO becomes inactive after the delay.

    Please let me know if you have any additional questions. Thanks!

    -Michael