STM32H745II VOS with SMPS supplying LDO

[DTomi.1]

Greetings,

What is the reason for not being able to use the SMPS (or the SMPS supplying LDO) option for VOS0 on STM32H745II?

VOS0 means the highest voltage, so won't the dissipation on the LDO be the highest?

I have been using the PWR_SMPS_1V8_SUPPLIES_LDO option with VOS0 (core running at 480 MHz) and have seen no problem.

Can you please tell me what are the possible risks of using this configuration?

Best regards,

Domagoj

[Beni1]

UP. Same problem here was allowed with earlier versions of CubeMX now it's not possile. Have to edit generated source code from CubeMX to enable this option.

[DTomi.1 · Accepted solution]

I have new info from the ST support, this option is ok and a fix will be provided in the STM32CubeMX 6.9.0.