IR21541

The IR21541 is an improved version of the popular IR2152 gate driver IC, and incorporates a high voltage half-bridge gate driver with a front end oscillator simi-lar to the industry standard CMOS 555 timer.  The IR21541 provides more functionality and is easier to use than previous ICs.  A shutdown feature has been designed into the CT pin, so that both gate driver out-puts of the IR21541 can be disabled using a low voltage control sig-nal. In addition, the gate driver output pulse widths are the same once the rising undervoltage lockout thresh-old on VCC has been reached, resulting in a more stable profile of frequency vs time at startup.  Noise im-munity has been improved significantly, both by low-ering the peak di/dt of the gate drivers, and by increasing the undervoltage lockout hysteresis to 1V.Finally, special attention has been payed to maximiz-ing the latch immunity of the device, and providing comprehensive ESD protection on all pins.