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TPS1H100-Q1: About short circuit and over current protection operation

Yuto Sakai
Mastermind 6100 points
Part Number: TPS1H100-Q1

Hi,

I have a question about short circuit and over current protection operation.

As far as I read the data sheet, I understand that there is no function to turn off the device by short-circuit or over-current protection operation, and turn off by thermal shutdown.
Is it correct?

Our customer's device is operating repeatedly ON / OFF.
I would like to determine if that is due to thermal shutdown.

Best regards,
Yuto Sakai

  • 0
    TI__Mastermind 32650 points

    Hi Yuto Sakai,

    You are correct, during a short-circuit and over-current protection, the device shuts off from thermal considerations.

    The device will first turn off and on due to thermal swing(sharp rise of temperature). This behavior will continue till the device reaches the thermal shutdown temperature. After which, the current limit is halved and the device will continue to retry.

    By your description of events, we suspect that thermal considerations (swing and shutdown) are causing the device to switch on and off.