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TUSB321AI: TUSB321AI ID Pin to Enable Power Supply?

Gilles Aminot
Prodigy 30 points
Part Number: TUSB321AI
Other Parts Discussed in Thread: TUSB320

Tool/software:

Can I use TUSB321AI ID Pin to enable VBUS power switch like UTSB320 Figure5 example in  https://www.ti.com/lit/wp/slly016/slly016.pdf ?

 

I want to implement and autonomous USB-C solution with Medium Current =1.5A. The TUSB321AI datasheet shows the power switch enabled from an GPIO on the host process, but would prefer to automatically control the power switch directly from the TUSB321AI.

If I use the ID pin to enable the Vbus switch are there any pitfalls/limitation with this approach? 

Thanks

  • 0
    TI__Mastermind 36500 points

    Hi Gilles,

    Yes, you can use the ID pin of the TUSB321AI for the same functionality of the ID pin of the TUSB320. Both pins are meant to be used to communicate to the host when in DFP or DRP-DFP config.

    Please let me know if you have any other questions.

    Thanks,

    Ryan