Power-up Sequence Issues

LH1 · ‎2026-03-26

For the STM32MP135 series, specifically the STPMIC1A I'm using, can VDD_CORE and VDD_CPU share the same power rail (buck1)?

PatrickF · ‎2026-03-26

HI @LH1

you could probably find some answers in following documents:

AN5587 Integration of STM32MP13x MPU product lines and STPMIC1D / STPMIC1A on a wall adapter supply
- especially figure 2
AN6312 How to use STPMIC1L for a wall adapter powered application on STM32MP13x lines MPUs
AN5586 STM32MP13x MPU product line discrete power supply hardware integration

Regards.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
Tip of the day: Try Sidekick STM32 AI agent, see here

View solution in original post

PatrickF · ‎2026-03-26

HI @LH1

you could probably find some answers in following documents:

AN5587 Integration of STM32MP13x MPU product lines and STPMIC1D / STPMIC1A on a wall adapter supply
- especially figure 2
AN6312 How to use STPMIC1L for a wall adapter powered application on STM32MP13x lines MPUs
AN5586 STM32MP13x MPU product line discrete power supply hardware integration

Regards.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
Tip of the day: Try Sidekick STM32 AI agent, see here