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TPS25751EVM: TPS25751D

Steve Chang70
Prodigy 200 points
Part Number: TPS25751EVM
Other Parts Discussed in Thread: TPS25751, TPS65982, BQ25713, BQ25756, BQ25792, BQ25731

Tool/software:

Dear TI team,

I am evaluating the TPS25751EVM for my project, which provides 5V/3A, 9V/3A, 15V/3A, 20V/3A, and 20V/5A PD source. Based on the TPS25751EVM design, the input power is drawn from the 751_PPHV net. How can this input be adjusted to match the above power settings accordingly? For example, can I use some IO pins to adjust my buck-boost feedback pin?

Additionally, we require USB-C mux control from the TPS25751 GPIO pins. Do you have any reference designs available for this?

We are a customer of the TPS65982 and would migrate to new chip from TI.

Steve

  • 0
    TI__Mastermind 34436 points

    Hi Steve, 

    Steve Chang70 said:
    How can this input be adjusted to match the above power settings accordingly? For example, can I use some IO pins to adjust my buck-boost feedback pin?

    You can configure the GPIO pins of TPS25751 to toggle if a specific source PDO is negotiated, see screenshot below:

    You can use these GPIO events to change the FB pin of the DCDC to go to a specific voltage onto 751_PPHV. Another option is pairing TPS25751 with one of the supported BQ devices. TPS25751 contains internal firmware to control the BQ part via I2C and does not require any extra configuration besides the few questions on the GUI questionnaire page. 

    We do not have a reference design with a USB-C mux, you can refer to the high-level block diagram below. There are also GPIO events available to be configured on TPS25751 for connection, cable orientation, USB2, etc. 

    Thanks and Regards,

    Raymond Lin

  • 0 in reply to Raymond Lin
    Prodigy 200 points

    Thank you Raymon!

    Which BQ part which was supported by current TPS25751 firmware? Would you please suggest one?

    Steve

  • +1 in reply to Steve Chang70
    TI__Mastermind 34436 points

    Hi Steve, 

    TPS25751 supports BQ25756, BQ25792/8, BQ25713. In a future release of the GUI we'll also include BQ25731. 

    BQ selection is dependent on the number of battery cells you plan on designing in your system, the BQ team can provide better suggestions. 

    Let me know if you have any further questions or concerns on the PD side! 

    Thanks and Regards,

    Raymond Lin

  • 0 in reply to Raymond Lin
    Prodigy 200 points

    Thank you Raymond. Have a great day!

    Best Regards,

    Steve