I have a voltage regulator circuit which keeps failing. It is based around a switching regulator. It takes 14V input from a variable voltage regulator (lab setup) and outputs 5V. I see 14V on the input but 0V on the output.
Interestingly after I soldered this I checked the pads of the IC for shorts and I did not find any, but after powering everything I turned off the power and checked again and there were many shorts. I replaced the IC, and the same thing happened again. There must be something wrong with the circuit.
Particularly the voltage output to ground is showing just a few ohms.
I have replaced the IC now twice. Each time I measure no shorts from the Vout to ground. As soon as I power the circuit once though, I measure shorts after powering down. Just powered for a few seconds. What could be happening?