IR51H420 - International Rectifier

IR51H420 SELF-OSCILLATING HALF-BRIDGE

The IR51H420 is a high voltage, high speed, selfoscillating half-bridge. Proprietary HVIC and latch immune CMOS technologies, along with the HEXFET® power MOSFET technology, enable ruggedized single package construction. The front-end features a programmable oscillator which functions similar to the CMOS 555 timer. The supply to the control circuit has a zen.

Features

n n n n n n Product Summary VIN (max) Duty Cycle Deadtime RDS(on) PD (TA = 25 ºC) 500V 50% 1.2µs 3.0Ω 2.0W Output Power MOSFETs in half-bridge configuration 500V Rated Breakdown Voltage High side gate drive designed for bootstrap operation Accurate timing control for both Power MOSFETs Matched delay to get 50% duty cycle Matched deadtime of 1.2us Internal oscillator with programmable frequency 1 1. 4 × (RT + 75 Ω ) × CT Zener clamped Vcc for offline operation Half-bridge output is out of phase with RT f = Description The IR51H420 is a high voltage, high speed, selfoscillating half-bridge..