To clarify, 112A stall current, so just needed something that would survive the stall, while running its closer to 33A,
The PWM frequency is 16Khz,
The 2 stage transistor stage was to limit the idle power draw, while trying to get the most out of the transistors without exceeding there base current spec (thats why the 220 Ohm resistor),
I agree a dedicated driver would have done a far nicer job, but i wanted to build one then and there, and those where what i had on hand, (didnt want the project to die while waiting until next weekend)
The PNP pullup suggestion helped greatly, now the heating is mostly gone, I found a 400A (peak) diode bridge that i am currently using as freewheeling diode while i tweak in the active driver, (vf is slightly less than the mosfet)
I reduced the gate driver to 19.6V, and everything still seems fine, it has a small power supply for that rail located on the same PCB.
Sadly the micros i have on hand make no mention of a deadband feature in the PWM, would you have some example models?
The supply capacitance is 120uF, Its a 12V 180A switchmode power supply with current foldback (Solar battery bank charger that i salvaged)