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TPS65987D: Configuration for power only - all data lines pass thru to other device

matterama
Prodigy 170 points
Part Number: TPS65987D

Hi all,

Very new here to the USB Type C PD schemes, looking for some guidance on a design approach.

Our system has a phone (Samsung Galaxy S10) that will be running an app.  We have another device with multiple peripherals on it (hub, display port, USB 3.1 high speed interface).  Both need to be powered from an external battery, as the phone battery will not last long enough if it is powering the peripherals.  As a bonus, it would be nice if, when we remove the external battery, the Galaxy S10 powers the peripherals until a new battery is installed.

I am trying to determine if using the TPS65987D as a means of handling power management to the S10 will let me accomplish this (or if my approach is just wrong).

A diagram of what I have described is below. 

This approach has holes in it of course.  Is there a simpler (standard) solution out there that i am unaware of?  

Thank you!

  • 0
    TI__Mastermind 36751 points
    Hi Matterama,

    This application should work with the TPS65987D. I would suggest ordering a TPS65987EVM so you can see if the PD controller can meet your needs. The EVM should be set up similar to your application as is. If you would like to support bi-directional power, you can configure the TPS65987D to be a DRP.

    Thank you,
    Eric