IR53HD420

Product Summary

The IR53HD420 is a complete high voltage, high speed, self-oscillating half-bridge circuit. 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 IR53HD420 has a zener clamp to simplify offline operation. The output features two HEXFETs in a half-bridge configuration with an internally set deadtime designed for minimum cross-conduction in the half-bridge. Propagation delays for the high and low side power MOSFETs are matched to simplify use in 50% duty cycle applications. The IR53HD420 can operate up to the VIN (max) rating.

Parametrics

IR53HD420 absolute maximum ratings: (1)VIN High voltage supply: - 0.3 to 500V; (2)VB High side floating supply Vo: - 0.3 to Vo + 25V; (3)VO Half-bridge output: -0.3 to VIN + 0.3V; (4)VRT RT voltage: - 0.3 Vcc + 0.3V; (5)VCT CT voltage: - 0.3 Vcc + 0.3V; (6)Icc Supply current: 25V; (7)IRT RT output current: - 5 to 5V; (8)dV/dt Peak diode recovery: 3.50V/ns; (9)PD Package power dissipation @ TA ≤+25℃: 2w, P2: 3w; (10)TJ Junction temperature: -55 150℃; (11)TS Storage temperature: -55 150 ℃; (12)TL Lead temperature (soldering, 10 seconds): 300℃.

Features

IR53HD420 features: (1)Output power MOSFETs in half-bridge configuration; (2)High side gate drive designed for bootstrap operation; (3)Bootstrap diode integrated into package (HD type); (4)Tighter initial deadtime control; (5)Low temperature coefficient deadtime; (6)15.6V zener clamped Vcc for offline operation; (7)Half-bridge output is out of phase with RT; (8)True micropower startup; (9)Shutdown feature (1/6th VCC)on CT lead; (10)Increased undervoltage lockout hysteresis (1Volt); (11)Lower power level-shifting circuit; (12)Lower di/dt gate drive for better noise immunity; (13)Excellent latch immunity on all inputs and outputs; (14)ESD protection on all leads; (15)Constant VO pulse width at startup; (16)Heatsink package version (P2 type).

Diagrams