Quote:
Originally Posted by MPaulHolmes
That's a beautiful heatsink!! I can't wait until you test it.
Duncan, I think some people may have gotten 600amp working, but I'm not sure about 700amp. There's sort of a limit to what you can do with a single mosfet driver like the mic4451. You might be able to use some gigamos mosfets with the same gate charge as the regular ones.
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Paul, was there a particular reason you used one mosfet driver instead of ten (apart from cost).
I have copied your power board using ten drivers and ten 130A 200V Mosfets and just had a spectacular blow up.
Also when your current sensor trips does it cut the motor drive and return as soon as the current drops or is there a delay or something? I think mine created a strong juddering effect just before blowing up.