Associate III

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STM32WB5MMG SMPS

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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

STM32WB series

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matteverzeBest answer

Associate III

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

From the datasheet:

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

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matteverzeAuthorBest answer

Associate III

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