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TPS25750: A function to turn on the power path switch only when the power supply of a specific PDO starts

Yuki
Prodigy 50 points
Part Number: TPS25750
Other Parts Discussed in Thread: TPS25730, TPS25751

Tool/software:

Does this IC have the function to turn on the power path switch and sink power to the system load only when the specified PDO power (e.g., 20 V/3 A) supply starts, or is there a USB PD controller IC with such a function?

Currently, I'm considering implementing such a system by combining a sink controller like the TPS25730 with a load switch IC. However, I'd like to know if there is an IC that has such a function on its own.

  • +1
    TI__Genius 13880 points

    The TPS25751 can perform the function you're requesting. You would utilize the Autonegotiate Sink Register (0x37) in the advanced configuration settings to set a minimum required power and/or a minimum required voltage for the power path to close.

    The TPS25751 Technical Reference Manual goes over how to set each field in this register to meet your design needs.

    Kind regards,

    Conner Gillette