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TPS1H100-Q1: IN voltage is high before VS supply

Ryuji
Guru 20090 points
Part Number: TPS1H100-Q1

Hello,

I have question when we the IN voltage is high vefore VS supply.

(1) td, ON and dV/dtON
Could you please let me know  the td, ON and dV/dtON specification in this case?
Should we consider the VS is over the VS,UVR?

(2) Open load detection
Does the device detect the open load on this delay time?

Best Regards,
Ryuji

  • 0
    TI__Mastermind 24740 points
    Hello,
    For question( 1), the Td,ON is not valid here so there is no delay VIN to VOUT. Once VS is above the UVLO, VOUT starts rising at the same specified rate if VS is rising sharply for example step function.
    For question (2), there is deglitch time for open load detection of around 700uS in on state. The rise time is much smaller than 700uS. I believe the open load detection still valid once VS is above UVLO

    Regards