Original poster: Fucian-at-aol-dot-com In a message dated 4/10/2004 2:49:50 PM Eastern Standard Time, tesla-at-pupman-dot-com writes: Also, if you're intending on using my board for it, it wont work. The UCC37322/1's will overheat because you're making them drive too big a load. Couldnt I piggy back the driver chips? How much current do these IGBTs need? Matt