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Associate III
October 16, 2025
Solved

STM32WB5MMG SMPS

  • October 16, 2025
  • 1 reply
  • 818 views

Hi,

I have a custom board with a STM32WB5MMG module. In order to obtain the best performances, I want to use the STM32WB5MMG SMPS with a 3.3v voltage source. However, I can't find in the Cube IDE any command to activate the SMPS. Is it always activate? How can be used and activated? 

Thanks

Best answer by matteverze

Thank you. I found that there is this define in app_config.h:

 

/**
* SMPS supply
* SMPS not used when Set to 0
* SMPS used when Set to 1
*/
#define CFG_USE_SMPS 1

 

to activate the SMPS

1 reply

TDK
Super User
October 16, 2025

From the datasheet:

TDK_0-1760650603740.png

and the reference it points to goes into detail on how to use SMPS or set it to bypass.

TDK_1-1760650791210.png

 

 

 

 

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matteverzeAuthorBest answer
Associate III
October 17, 2025

Thank you. I found that there is this define in app_config.h:

 

/**
* SMPS supply
* SMPS not used when Set to 0
* SMPS used when Set to 1
*/
#define CFG_USE_SMPS 1

 

to activate the SMPS