The consumption of Vcap about the STM32H723

[licunxu]

Hi ST expert

I'm ready to use STM32H723 now. Vcores can use internal LDOs or external power supplies via Vcap pins. If you use an external power supply, what is the current of the power supply, I see that there is only Idd in the datasheet.

Thanks

[Sarra.S]

Hello @licunxu, 

The current consumption can be estimated based on the datasheet values for LDO mode. For example:

• At VOS0 (1.36V), the current consumption is approximately 145mA, resulting in a power consumption of 197mW (1.36V x 145mA).
• Considering an 80% SMPS efficiency for example, the input power to the SMPS would be around 236.4mW, leading to an input current of approximately 71.6mA at 3.3V.