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TPS65987D: Is it possible for TPS65987D to do "power role swap" in stand-alone (no external controller)?

K.Yaita
Guru 29720 points
Part Number: TPS65987D

Hi Team,

My customer considers to design their application with TPS65987D.
The requirement of the application is the following.

- Source power (up to 60W) to note PC that is connected to Type-C receptacle of the application with USB 3.1 & 2.0 communication.

I believe Power Role Swap is required in this application and I would like to ask the following.
---------------------------------------------------------
1) Is it possible for TPS65987D to do the power role swap in stand-alone (no external controller)?
2) Can TPS65987-90EVM be used to evaluate the power role swap function?
---------------------------------------------------------
Best Regards,
Yaita

  • 0
    TI__Mastermind 24075 points
    Hi Yaita,
    1) Yes, in app config you can enable the initiate swap to source or sink in register 0x29(port control) depending on customers' application. This will not be done in run-time if there is no EC to write that bit.
    2) Yes TPS65987-90 EVM can evaluate power role swap function.
  • 0 in reply to Kedar Manishankar
    Guru 29720 points

    Hi Kedar-san,

    Thank you for your kind support.
    Regarding 1), I would like to ask an additional question.

    I believe the following process in application customization tool can meet the following requirement.
    >Source power to note PC that is connected to Type-C receptacle of the application
    Is my understanding correct?
    -------------------------------------------------
    - Select "Advanced"


    - Select "Dual Role Port (DRP), prefers power source"


    - Confirming to check the following red boxes.


    -------------------------------------------------

    Best Regards,
    Yaita

  • 0 in reply to K.Yaita
    TI__Mastermind 24075 points
    Hi Yaita,
    To source 60W, you want to make sure TPS65987D has a source PDO configured for 20V, 3A. This can be checked and changed in Transmit Source Capabilities Register (0x32)