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TPS65982: Looking for Battery Charger

Shibin Varghese
Intellectual 835 points
Part Number: TPS65982
Other Parts Discussed in Thread: BQ25792, BQ25303J

Hi Team,
I am looking for a USB PD with a 1S battery charger for one of my designs. 
Does TI have an integrated solution of a USB PD and a 1S battery Charger?.
I am looking for standalone devices.
The charging current must be greater than 2A.

Also, will we get 5V, 1.5A output from a PD source without any negotiation. Ie default 5V when plugged in.
 

  • 0
    TI__Mastermind 33541 points

    Please look at the TPS25750D for the USB PD controler and the BQ25792 as the charge for this solution.  We do not offer a monolithic solution in this space at this time.

  • 0 in reply to Chuck Branch
    Intellectual 835 points

    Hi CB, 

    Thank you for your reply.
    Also, will we get 5V, 1.5A output from a PD source without any negotiation? ie default 5V when plugged in.
    I am new to USB PD.
    I have a 3.7 nominal voltage battery-powered device. ie  only sink is needed through the USB type C
    I was planning to use BQ25303J as my battery charger. since it is standalone and its input range is from 4.1V to 17V.
    Only 5V, 2A from a USB Type C will be needed for my charging purpose. do I really need a PD?
    I may want to increase my charging current in the future.


  • 0 in reply to Shibin Varghese
    TI__Mastermind 33541 points

    Shibin,

    All PD sources are backwards compatible to USB3.2 or USB4.0 specifications without PD, so any type C connection will provide a 5V output without negotiation.  The current can be 900mA, 1.5A, or 3A, so it appears that you are configured, PD is not required for your system. until you wish to draw more than 15W of power.

    Regards,

    Chuck

  • 0 in reply to Chuck Branch
    Intellectual 835 points

    I'm Sorry.
    I am still confused.
    The 5V will be available in the VBUS only if there is a negotiation right??.
    I mean pulling done the CC1&CC2 pis with 10K resistors like in the below.

    So I should use a CC controller or should pull down the CC pins with appropriate resistors right??.
    Also, when looking for CC Controllers here, all CC controllers have only source capability, does this mean for up to 15W from USB C we need only 10K Rd at the sink side.

  • +1 in reply to Shibin Varghese
    TI__Mastermind 33541 points

    Shibin,

    If you only require 5V, then you can simply connect 10K resistors to CC1 and CC2 and the DFP will provide 5V with a 3A current limit without any negotiation.  This feature is present to support legacy USB connectors.