Quote:
Originally Posted by Leucosticte
I'd recommend using a gate driver to control your transistors. These are designed to eliminate the transients that may occur when you're switching your transistors on/off at higher frequencies. It's probably a contributing factor to why your output waveforms look distorted.
Make sure to check the data sheet of the FET and see if its suitable too.
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Good point on the gate driver - even if I don’t PWM I will still plan on using something like a TC426 buffer between the micro and the FET. The FET is good for PWM and rated to 60A, but after consulting a more experienced motor driver friend, he’s saying it definitely needs a large heat sink (instead of the scrap metal plate I used
) as it would be up over 200°F in just a few seconds which matches what I was seeing.