I need help =(

[Tom F]

Well power devices can usually withstand higher temperatures then say, a big chip like a CPU or something (usually a max junction temp of 120ºC+)

I would have expected the controller to thermal before it got to a FET killing point anyway?

But i agree, it would explain the excessive heat and possibly the erratic performance (especially if just one phase of FETs had partially or completely failed)

Still haven't measured any loaded voltages...going to do that in a bit