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TPS25750: TPS25750 GUI and other questions pairing with BQ25713

Manu Chang
Intellectual 1890 points
Part Number: TPS25750
Other Parts Discussed in Thread: BQ25713, , TPS25751

Hi Team, 

My customers are trying to develop TPS25750 pairing with BQ25713, Here they have some problems when using TPS25750 and the GUI tools. Here are the questions:

1. My customers would like to use BQ25713 and TPS25750 as both power source and power sink for type C, as showed in figure one in GUI guide. However, in GUI tools we cannot find this option, as showed in figure two, so which option should I choose for customers' use case?

2. This questions may not including the TPS25750, but you may can also give me some insight in case you face this before. When testing the BC1.2 function, once connecting the adapter supporting BC1.2, BQ25713 seems cannot charging via type C and the PD protocol seems not running as well. Have you ever meet this kind of scenario before and any reason that may can cause this? Any suggestions/insights that might can be helpful to my customers. 

BR,

Manu

  • 0
    TI__Mastermind 37855 points

    Hi Manu,

    Couple Comments here:

    If your customer is working on a new design or is in the process of creating a design, we highly recommend they switch over to the TPS25751. This part is a direct successor, is P2P, has all the same features, and fixes some bugs found with the TPS25750.

    If they already have a TPS25750 design:

    They should be using the third configuration (top right). The EVM user guide for the TPS25750 is out of date.

    Manu Chang said:
    When testing the BC1.2 function, once connecting the adapter supporting BC1.2, BQ25713 seems cannot charging via type C and the PD protocol seems not running as well. Have you ever meet this kind of scenario before and any reason that may can cause this? Any suggestions/insights that might can be helpful to my customers. 

    A system will typically only negotiate BC1.2 or PD protocol. If you connect a BC1.2 adapter and see BC1.2 charging, I would not expect there to be any PD negotiation.

    Do you see BC1.2 toggling on the D+/D- lines? What voltage do you see on VBUS?

    Thanks and Regards,

    Chris