How to calculate STM32H743 power consumption and dissipation?

[Jonah9Veh]

How to calculate the power consumption of STM32H743 from datasheet, theoretically as close as possible to the actual value? What parameters should be considered?

Also, I want to calculate the heat generated from MCU -- dissipated power (in W). How to calculate that? 

[Andrew Neil]

You can never do an exact calculation - it will always be an estimate

The datasheet gives you power consumption figures - use them.

There is also a power estimator in CubeMX (standalone, or within CubeIDE).

Or use a dev board, and measure it.

 

PS:

https://www.st.com/resource/en/datasheet/stm32h743vi.pdf#page=110 

 

[mƎALLEm]

+ You can also refer to AN5036 "Guidelines for thermal management on STM32 applications", see the section 6 Thermal analysis examples