I tried to experiment with boost SMPS with multiple supply rails and I almost burned myself when touching parts when running.
Here is the circuit and the part getting hot:
I am trying to kick the 8.8V from my regulator to 15V. The PWM comes from Arduino, assuming near perfect regulation from the regulator powering this experiment.
In my first experiment with 600Hz PWM and 10mH the inductor is very noisy and gets hot. I get 10V across R1.
In my 2nd attempt running 31.5kHz PWM and 100uH inductor at L1 the MOSFET start to get extremely hot. I am also getting 53V (!!!) across R1. I probably damaged the diode.
Can anyone tell me what did I do wrong in this?