Opto-isolated gate driver outputs 2.5 amps

The FOD8318 smart gate driver optocoupler with active Miller clamp is intended for driving IGBTs. The IC can drive 2.5 A peak and includes desaturation detection, and soft IGBT turn-off.

The device uses CMOS transistors to drive the IGBT from rail-to-rail, and features isolated feedback circuitry for fault sensing. The $3.80 ea/1,000 chip has high noise immunity, a CMR of 35 kV/µsec at Vcm-1500 Vpeak, and 3.3V/5V CMOS/TTL logic input.