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Original question:

BQ25792: BQ25792 + TPS25750 + BQ40Z59-R2

TPS25750: Will the TPS25750 support BQ25798 just like BQ25792?

Andy Lin
Prodigy 20 points
Part Number: TPS25750
Other Parts Discussed in Thread: BQ40Z50, BQ25792, BQ25798,

Tool/software:

Hello forum,

We are evaluating the similar configuration like [1] (BQ25792 + TPS25750D + BQ40Z50).

But we found BQ25792 has collapsed SYS rail under no battery operation on forum ([2] [3] and lots more).

It's suggested to use pin-2-pin and register-to-register compatible BQ25798 instead [3].

But the USBCPD Application Customization Tool does NOT show BQ25798 as supported charger.

Can I use BQ25798 with TPS25750 natively, just like BQ25792?

[1] https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1035540/bq25792-bq25792-tps25750-bq40z59-r2

[2] https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1431908/bq25792-interfacing-to-bq40z50-r1

[3] https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1272906/bq25792-vsys-unstable-when-battery-is-removed-and-adapter-remains-powering-the-device

[4] https://dev.ti.com/gallery/view/USBPD/USBCPD_Application_Customization_Tool

  • 0
    TI__Genius 10040 points

    Hi,

    We have received your question. TI US is closed for the Thanksgiving holiday until Monday 12/02. Please expect delayed responses. Our device experts will respond when TI US is back in office.

    Thank You