单核产品看看STM32H743：
TheSTM32H743/753 lines contain the Arm® Cortex®-M7 core (with double-precision floating point unit) running up to 480 MHz..


双核产品，看看STM32H745这些：
The STM32H7x5 lines of microcontrollers combine the performance of the Arm® Cortex®-M7 (with double-precision floating point unit) up to 480 MHz and the Arm® Cortex®-M4 core (with single-precision floating point unit) up to 240 MHz, with optional extended ambient temperature range up to 125 °C.


都带高精度定时器 HRTIM 。

楼主可不可以给我们科普一下 做数字电源 需要单片机具备什么功能或者能力？