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TPS25751: How to test Patch Bundle Sequence (I2Ct) on EVM?

Jay Yoo
Intellectual 2471 points
Part Number: TPS25751


Tool/software:

Hi team,

Can you suggest a way for me to test PBM sequences on the EVM?

I wonder which tool or GUI I can use to write the entire patch bundle to the EVM over I2C.

I tried AARVARK but it has a problem with writing so many codes at a time.

Thanks, 

Jay

  • 0
    TI__Mastermind 32870 points

    Hi,

    I think writing a script for Aardvark or microcontroller is the best way for this.

    If you need example I2C log for PBMx I can attach that here.

    Regards

  • 0 in reply to Tommy Lin
    TI__Intellectual 2471 points

    Hi Tommy,

    Have used Aardvark to configure low region FW on the PD IC? If so, can you share an example Aardvark for me?

    And do you happen to know when the TPS25751 goes to PTCH mode from APP mode? I'm facing this issue that after the successful configuration the device is being reset for some reasons. I don't know why.

    Thanks,

    Jay

  • 0 in reply to Jay Yoo
    TI__Mastermind 32870 points

    Hi,

    Unfortunately we do not have the script as most people develop their own code with the assistance of the log and TRM.

    Here is a copy of the PBMx I2C log where PBMx is performed on two PD controller.

    2287.PBMx.zip

    May I know what is your ADCIN setting?

    Regards

  • 0 in reply to Tommy Lin
    TI__Intellectual 2471 points

    Hi Tommy,

    My customer set it as 7&5(Always enable sink). I could duplicat the behavior with below sequecne.

    1. USB adapter is attached to the port

    2. Power on :Vin3V3, PP5V

    3. Load patch bundles

    4. See the successful negotiation on the port.

    5. Detach the USB adapter(cable) from the port.

    6. Mode changes APP-->PTCH

    Do you have any idea why this happened?

    Thanks,

    Jay

  • 0 in reply to Jay Yoo
    TI__Mastermind 32870 points

    Hi,

    This is most likely because EC did not clear dead battery flag after VIN3V3 comes up.

    After the first step PD powers on in dead battery and the whole device is powered by VBUS. Without clearing the dead battery flag the power source for the PD chip will not switch to VIN3V3, that is most likely why the PD reset after adapter is unplugged.

    Regards