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TPS25750: Selectively enable/disable Source functionality

Josh Toth
Prodigy 20 points
Part Number: TPS25750

I'm looking at using the TPS25750 for a project and it is everything I need, except I can't seem to find a way to dynamically disable the "source" capability. My device will be running on from its battery, but given a lower battery level, I want to disable the sourcing in order to preserve my device's operation. Is there a way to do that with a GPIO? I looked through the reference manual and played with the configuration GUI, but nothing stood out to me. I have a 3.3V logic signal available to determine if it should allow charging of another device, just not sure how utilize it (or if there is even a way). If not, is there a similar TI product with that ability?

Thanks!

  • 0
    TI__Mastermind 37855 points

    Hi Josh,

    Unfortunately, the GPIO events described in the TRM do not seem to match your desired use case, so I do not think there is a way to disable source capability through a GPIO.

    The only way I think you would be able to do this is through I2C. If you have an I2C master connected to the TPS25750 I2Cs ports, you would be able to reduce the number of Source PDOs to 0 and renegotiate the port so it would not source.

    Thanks and Regards,

    Chris