600 V Self Oscillating Half Bridge Gate Driver IC IR21531S

Open online SPICE simulator circuit link: power_600VDC_half_bridge_gate_driver_IR21531S.TSC

600 V Self Oscillating Half Bridge Gate Driver IC IR21531S

The IR21531S are an improved version of the popular IR2155 and IR2151 gate driver ICs, and incorporates
a high voltage half-bridge gate driver with a front end oscillator similar to the industry standard CMOS
555 timer. The IR21531 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 outputs can be disabled using a low voltage control
signal. In addition, the gate driver output pulse widths are the same once the rising under voltage lockout
threshold on VCC has been reached, resulting in a more stable profile of frequency vs time at startup.
Noise immunity has been improved significantly, both by lowering the peak di/dt of the gate drivers, and by
increasing the under voltage lockout hysteresis to 1V. Finally, special attention has been payed to maximizing
the latch immunity of the device, and providing comprehensive ESD protection on all pins.

Model performance :
- Static Electrical Characteristics and Dynamic Electrical Characteristics
are modeled with the typical values from the datasheet.
- Temperature effects are not modeled

The following features have been modeled :
- Switching Characteristics such as propagation delay, peak currents
- Under-voltage lockout