Shame I did not read this thread before I toasted some irl2203ns, low rds on, logic level, I thought I was good to go. Powered up my battery vehicle drove down the street, heat sink perfectly cool I thought I had cracked it. Return journey mosfet stuck on until the brakes overcame its stall current, pop went the fuse. Only needed the wheels to fall off to finish the circus event.
It probably went through the Miller effect,shoot through etc,the other irl2003n for braking ending up in the same condition.
I suppose I live and learn, upped the voltage and used some 2n3055`s from a collection I have for some reason. Worked first time plus I have a bum warmer for the coming winter.