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How the H750 kernel is powered using an external power supply

allgoodhi
Associate II

When using the STM32H750VBT6, I supplied around 1.37-1.4 supply voltage to the external pins VCAP1 and VCAP2,the project was configured as an external power supply using cubemx software.HAL_PWREx_ConfigSupply(PWR_EXTERNAL_SOURCE_SUPPLY); is used in the program.Frequency automatically configured to 480 MHz via cubemx (internal clock source).

allgoodhi_0-1715329182041.png

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According to the manual said burned into the power-off restart, and then to be effective, after the start may not be able to recognize the chip can not be debugged, good luck may be debugging, but run for a while will enter the Hardware Error Interrupt Function in the HardFault_Handler().How to solve this problem.

 

 

1 ACCEPTED SOLUTION

Accepted Solutions
AScha.3
Chief

>supplied around 1.37-1.4

"around" is not adequate definition here ; 🙂

+

this is core supply , maybe 200mA needed; so  R48/49 = 0. 

And Vcap low noise, low impedance source !

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3 REPLIES 3
AScha.3
Chief

>supplied around 1.37-1.4

"around" is not adequate definition here ; 🙂

+

this is core supply , maybe 200mA needed; so  R48/49 = 0. 

And Vcap low noise, low impedance source !

If you feel a post has answered your question, please click "Accept as Solution".

Voltage fixed at 1.375V,Do you mean to use 0R resistors for R48 and R49?

切换到 0R 解决了它,谢谢