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TPS6594-Q1: Re-programming steps

Kaushal C
Intellectual 440 points
Part Number: TPS6594-Q1

Dear Team,

I'm using TPS65941515RWERQ1 pre-programmed PMIC in my design, but need some slight modification in its program. I need VCCA_PG_SET to be changed to 5V, So I've followed the below steps:

1. Using TPS6594 Socket EVM, downloaded configuration from TPS65941515RWERQ1 PMIC in .bin format
2. Then changed the register 0x002c = 0x7f
3. Then re-programmed the PMIC with updated .bin file

But after following the above steps, next time while comparing the re-programmed PMIC with updated .bin file it is showing EEPROM locked. Please confirm if the above steps followed are correct. Also how to unlock the EEPROM to Compare.

Regards,
Kaushal

  • +1
    TI__Mastermind 20399 points

    Hello Kaushal,

    Kaushal C said:
    1. Using TPS6594 Socket EVM, downloaded configuration from TPS65941515RWERQ1 PMIC in .bin format
    2. Then changed the register 0x002c = 0x7f
    3. Then re-programmed the PMIC with updated .bin file

    So with the change of the PGOOD on the VCCA to 5V, I know it may sound silly, but have you changed the jumper on the right hand side from 3V3 to VSYS

    Set to: 5V0 to VSYS or if using a power supply other than the USB power, apply 5V on the VSYS.

    Mind you that setting your VCCA to 5V you'll need to have a new power supply for the 3V3 on the VIO_IN pin as our recommendation is at max ~3V4,

    As shown here:

    BR,

    Nicholas

  • 0 in reply to Nicholas McNamara
    Intellectual 440 points
    Nicholas McNamara said:

    So with the change of the PGOOD on the VCCA to 5V, I know it may sound silly, but have you changed the jumper on the right hand side from 3V3 to VSYS

    Yes Nicholas, changed jumper to 5V0 to VSYS and also VIO_IN is supplied with 3V3, still its locked

  • 0 in reply to Kaushal C
    TI__Mastermind 20399 points

    Kaushal,

    replied to your email, please check if that fixes the problem.

    Will update here in case of resolution in email.

    BR,

    Nicholas