Hot swapping power kills PSOC 4 w/ LDO | Cypress Semiconductor
Hot swapping power kills PSOC 4 w/ LDO
I am having an issue with a PSOC 4 product that has a terminal block for power and communication on a custom board. When I hot swap the terminal block, it kills the microcontroller, I cannot even program it again. When I power cycle using the power button on a power supply, it does not affect it. The power input is 12V, which goes to a MIC2920 5V LDO, then to the controller. There is not much more to the circuit besides a reverse voltage protection diode.