How do I configure the STUSB4500 as a PPS sink?

[MForw]

Using an Aukey PA-Y10 supply with the STUSB4500 works fine for all the five fixed-voltage PDOs (5V, 9V, 12V, 15V and 20V).

However, the supply's manual says that it features a PPS output with 3 to 16V but I found no way to access this with the STUSB4500. The source-capabilities message just lists the five fixed-voltage PDOs.

So how can I access the PPS (programmable power supply)?

[Gregory Go.]

Hello,

PPS mode (Programmable Power supply) is an optional feature of USB PD 3.0

The STUSB4500 supports USB Power Delivery 2.0, but not PPS.

So with STUSB4500, you can request any standard USB PD profiles from 5V to 20V. But not the PPS profiles.

If you want to support the PPS profiles, you can use another controller which support USB PD 3.0 with PPS, like:

- STM32G0

- STM32G4

- STM32L5

- STUSB1602 + STM32F0

Below are some documentations to refer to:

Press release: STM32G0 with USB-C Support:

https://www.st.com/content/st_com/en/about/media-center/press-item.html/n4139.html

STM32G0 USB-C PD presentation:

https://www.st.com/resource/en/product_presentation/stm32g0_usb-c_solutions.pdf

STM32CubeG0 demonstration firmware - user manual

https://www.st.com/resource/en/user_manual/dm00452280.pdf

[MForw]

OK, thanks a lot for clarification!