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TPS65988: TPS65988

Shlomo Tamsoot
Prodigy 10 points
Part Number: TPS65988

Hi

I'm trying to charge S20 phone via HSM which is contains PD component TPS69588 the problem is that the charging current is 1A low ,instead of 2.5A

I set he 0x32 register 2.8A and 5V  .What do you think can cause that

Thanks

Shlomo

  • 0
    TI__Expert 8160 points

    Hello,

    May I know what you meant by HSM? I would suggest you to check PD trace and confirm if the phone is picking the right PDO. 

    Thanks

    Prajith

  • 0 in reply to Prajith Cheerakkoda
    Prodigy 10 points

    Hi

    My system includes PD and FLASH memory as well as MSP CONTROLER
    Which connects to PD via I2C, the FLASH connects to PD via SPI
    I call this whole system HSM
    The system receives power from the CHARGER and supplies it to the PHONE
    While removing the charger the HSM receives voltage from the PHONE
    During the transition receives voltage from VCONN so that the system is fed at each stage
    I have an application in PHONE that connects via USB lines to FTDI which is in HSM
    The phenomenon I get and want to get support for is
    As soon as I disconnect the charger then the connection between PHONE and FTDI is disconnected and this only happens for the first time after turning on the PHONE when there is a charger
    The PORT is initialized UFP
    Thanks
    Shlomo
  • 0 in reply to Prajith Cheerakkoda
    Prodigy 10 points

    Hi

    My system includes PD and FLASH memory as well as MSP CONTROLER
    Which connects to PD via I2C, the FLASH connects to PD via SPI
    I call this whole system HSM
    The system receives power from the CHARGER and supplies it to the PHONE
    While removing the charger the HSM receives voltage from the PHONE
    During the transition receives voltage from VCONN so that the system is fed at each stage
    I have an application in PHONE that connects via USB lines to FTDI which is in HSM
    The phenomenon I get and want to get support for is
    As soon as I disconnect the charger then the connection between PHONE and FTDI is disconnected and this only happens for the first time after turning on the PHONE when there is a charger
    The PORT is initialized UFP
    Thanks
    Shlomo
  • 0 in reply to Shlomo Tamsoot
    TI__Expert 8160 points

    Hello,

    Is the PD controller advertising 2.8A in the PD trace? If no, please check 0x32 in debug mode. 

    Thanks

    Prajith