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TPS25750: TPS25750D for a PD adapter

Antony Lin
Genius 13480 points

Part Number: TPS25750
Other Parts Discussed in Thread: BQ25731, TPS55288

Hi,

We need to support some PD adpater project, some with PPS source requirement that we can't support, but we can use TPS25750D to support non-PPS_Source project.

The PDO requirement is as below which looks ok to us.  

  • PD 24W 5V 3A, 9V 2.67A, 12V 2A
  • PD 27W 5V 3A, 9V 3A

My question is, what's the major difference if we choose TPS55288 or BQ25731 (on TPS25750D EVM).  Can you provide some explanation about this?

THanks,

Antony

  • 0
    TI__Mastermind 33871 points

    Antony,

    Those two parts have very different purposes.

    1.  The TPS55288 is a BUCK Boost power converter that supports a wide range of voltage inputs and is setup to provide output power.  This power converter is best for DFP conditions where power is supplied by the type C port.  This is the condition that you are describing

    2.  The BQ25731 is a battery charger that is designed to accept power from the type C port (UFP mode) in the case of the TPS25750D.

    For your design, the TPS55288 is a good choice if you have a wide range of input power conditions.  If your input supply is greater than 15V, then you do have the option of using a buck only solution which is lower cost.

    The TPS25750D is a good choice for your application and I am happy to help you with supporting circuitry and configuration once you know more about your system needs.

    Regards,

    Chuck