Hiya, was wondering if someone could help me with a simple low pass filter for my PWM driver. The frequency is 20khz so I would like to add a filter to keep it from oscillations above that. I think its oscillating in the mhz range but I can't be certain my scope is not good enough to pick it up, but the driver gets real hot real fast once the main 20khz disappears. So my only guess at this point is oscillation. I added a resistor at one point and it was more stable.
Not sure how to design a filter for a square wave.
tnx
Not sure how to design a filter for a square wave.
tnx