LDO Power Supply for STM32H757ZIYx

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?

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mƎALLEmBest answer

ST Technical Moderator

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 "Best answer" on the reply which solved your issue or answered your question.

mƎALLEmBest answer

ST Technical Moderator

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 "Best answer" on the reply which solved your issue or answered your question.

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