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TPS7A6650-Q1 Vout > Vin condition

Atsushi Yamauchi
Genius 4810 points

I would like to operate with Vout > Vin condition for TPS7A6650-Q1.

There is the possibility Vout > Vin condition (Battery line is shut down) in the customer application.

In this case, there are not any problem with Vout = 5V. Is this correct?

And is the effect by the parastic diode?

Best regards,

Atsushi Yamauchi

  • 0
    TI__Mastermind 27780 points
    The appropriate Applications Engineer has been assigned to respond accordingly. Thank you for your patience.
  • 0
    TI__Expert 5675 points

    Hi Yamauchi san,

    May I know why would you let the TPS7A6650-Q1 operate with Vout > Vin?
    Do you mean shut down the input power supply but VOUT decrease slower than VIN or force an voltage at VOUT?

    For the first condition, there is no problem.
    For the second, if the voltage added at VOUT <5V, device should have no problem, but potential risk may exist due to the parasitic body diode of the MOSFET.

    Best regards,
    Jason Liu