Description

An enhanced variant of the widely used IR2155 and IR2151 gate driver ICs, the IR2153D(S) incorporates a high voltage half-bridge gate driver with a front end oscillator that is similar to the CMOS555 timer. In comparison to earlier ICs, the IR2153 offers more capability and is simpler to operate. The CT pin features a shutdown capability that allows both gate driver outputs to be turned off using a low voltage control signal. Additionally, once the rising under voltage lockout threshold on VCC has been achieved, the gate driver output pulse widths are constant, resulting in a more stable frequency vs. time profile at startup. Increasing the under voltage lockout hysteresis to and reducing the peak di/dT of the gate drivers have both greatly enhanced noise immunity.