I bought the TC4421 to drive a IRFP250N power MOSFET. I'm using a 12v battery as the power source, and an Arduino to make a square wave input at ~1kHz. I have things wired this way: TC4421: GND to ground VDD to +12v line on battery Input to PWM output from Arduino Output to gate of IRFP250N The FET is driving a flyback transformer to make plasma. I put about 10 turns it. Everything works well at first for the first few times: I have it on for about 1-4 seconds at the time. Neither component gets hot, I have them both heatsinked on copper and the FET BARELY gets warm, the TC4421 is at room temp. All of the sudden, everything stops working, the TC4421 gets VERY hot and it just dumps current to ground regardless of what's going on at the input. Am I wiring something wrong, and/or can I fix it somehow? I blew through 3 of them already and am running out, plus they're about $3 a piece. Thanks!