Stm32h743 gets hot on custom PCB

[Bassam_Mostafa]

I designed a PCB using the STM32H743 in the TFBGA240 +25 package.
When I power the board, the STM32 gets hot. I measured the voltage across the VCAP capacitors, and it is 2.2 V, while it should be a maximum of 1.35 V.
What could be causing the VCAP voltage to rise to 2.2 V?

[TDK]

Only a bad schematic design or a manufacturing error will cause this.

Show a large in-focus picture of your chip and your schematic if you can.

[Andrew Neil]

Welcome to the forum.

Please see How to write your question to maximize your chances to find a solution for best results.

In particular, as it's a custom PCB, you will need to post your schematic & layout.

Some good, clear photos would also help.

Have you checked your design against Application note AN4938, "Getting started with STM32H74xI/G and STM32H75xI/G MCU hardware development"

Also check https://www.st.com/en/microcontrollers-microprocessors/stm32h743-753/documentation.html 

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@Bassam_Mostafa wrote:

When I power the board, the STM32 gets hot. 

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How hot, exactly?

What current is it drawing.

Have you loaded any code at this point?

PS:

Is this the first time this design has been use, or has it worked OK previously?