LDO Power Supply for STM32H757ZIYx

Ronil · ‎2025-05-06

Hello, I have seen in the post That many users had a problem with the LDO power supply for STM32H757ZI

I wanted to ask, can you confirm that I have a correct implementation of the power supply for LDO?

mƎALLEm · ‎2025-05-06

Hello,

1- VLXSMPS must be kept floating. It's already indicated in the post you have referred to.

2- Regarding VCAP3 (from AN4938) :

VCAP3 must be connected to other VCAP pins with only 2x2.2uF:

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.

View solution in original post

mƎALLEm · ‎2025-05-06

Hello,

1- VLXSMPS must be kept floating. It's already indicated in the post you have referred to.

2- Regarding VCAP3 (from AN4938) :

VCAP3 must be connected to other VCAP pins with only 2x2.2uF:

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.