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TPS25750EVM: TPS25750 Battery charging from DC supply

Sandeep B
Prodigy 200 points
Part Number: TPS25750EVM
Other Parts Discussed in Thread: USB-PD-CHG-EVM-01, BQ25792, TPS25750

Hi,

I am using USB-PD-CHG-EVM-01.

Is it possible to charge battery connected to BQ25792 from DC supply instead of PD3.0 capable cable?

Regards,

B Sandeep.

  • 0
    TI__Mastermind 32891 points

    Sandeep,

    I do not believe that the EVM is setup to do this, but it is possible to design a system that will

    It will be a fairly involved process.

    1. You will have to be able to control the charger without the TPS25750,
      1. This can be done the I2CR and I2CW commands through the I2Cs bus of the TPS25750 as long as the TPS25750 is powered up.
    2. You will need a power mux structure to select between the TPS25750 PPHV path and the DC supply path so that they cannot be on at the same time.

    If you have the capability to do these two things, then it should be possible to share the power path.

    Chuck