As USB ports become more prevalent in new cars, providing power to these ports becomes more important and cumbersome. Their sheer number and varying locations require a robust, simple, and low-cost so
Different pins of the same group of io ports of stm32 are set to different input and output modes. For example, PA1 of PA port is used as input to read input value, and PA2 is used as output to output
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By the way, I did a ripple control test: input 5V3A switching power supply output setting 9.2VNote: The following results are for the probes clamped on the test posts of the EMC board, and the spacing