IR2155

Data Sheet No. PD60029 revJ IR2155&(PbF) (NOTE: For new designs, we recommend IR’s new products IR2153 and IR21531) SELF-OSCILLATING HALF-BRIDGE DRIVER Features Floating channel designed for bootstrap operation Product Summary Fully operational to +600V Tolerant to negative transient voltage VOFFSET 600V max. dV/dt immune Undervoltage lockout Programmable oscillator frequency Duty Cycle IO+/- 50% 210 mA / 420 mA f= 1 1.4 × (RT + 150Ω) × CT Matched propagation delay for both channels Micropower supply startup current of 125 µA typ. Low side output in phase with RT Available in Lead-Free Description VOUT Deadtime (typ.) Package 10 - 20V 1.2 µs The IR2155 is a high voltage, high speed, selfoscillating power MOSFET and IGBT driver with both high and low side referenced output channels. Proprietary HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. The front end features a programmable oscillator which is similar to the 555 timer. The output drivers feature a high pulse current buffer stage and an internal deadtime designed for minimum driver crossconduction. Propagation delays for the two channels are matched to simplify use in 50% duty cycle applications. The floating channel can be used to drive an N-channel power Typical Connection 8 Lead PDIP MOSFET or IGBT in the high side configuration that operates off a high voltage rail up to 600 volts. up to 600V VCC RT CT COM VB HO VS LO (Refer to Lead Assignment diagram f...