The Infineon IR21531S are an improved version of th popular IR2155 and IR2151 gate driver ICs and in corporates a high voltage half bridge gate driver with a front end oscillator similar to the CMOS 555 timer. A shutdown feature has been designed to the Ct pin, so that both gate driver outputs can be disabled using a low voltage control signal. Noise immunity has been improved significantly both by lowering the peak di/dt of the gate driver, and by increasing the undervoltage lockout hyster to 1V.

True micropower start up
Tighter initial deadtime control
Low temperature coefficient deadtime
Also available LEAD-FREE