The IR21531S is a high-voltage, high-speed power MOSFET and IGBT driver featuring a self-oscillating circuit designed for half-bridge configurations. This IC integrates a high-side and low-side driver, a bootstrap diode, and a self-oscillating circuit to efficiently drive N-channel MOSFETs or IGBTs. It is well-suited for applications such as electronic ballasts, switch-mode power supplies, and DC-DC converters. The IR21531S incorporates protection features like undervoltage lockout and deadtime control, enhancing overall reliability. Available in a standard SOP8 package, it facilitates easy integration into various circuit designs.
Key Features:
- High-voltage half-bridge driver
- Self-oscillating circuit with frequency range up to 150kHz
- Integrated bootstrap diode
- High-side floating supply voltage up to 600V
- Low side and high side undervoltage lockout
- Deadtime control for optimized switching
- Matched propagation delay for high and low sides
- Output source/sink current capability: 290mA/600mA
- Standard SOP8 package for easy PCB mounting
- High Side Floating Supply Voltage (Vb): 600V max
- High Side Output Voltage (Vs): Vb - 20V to Vb + 0.3V
- Low Side Output Voltage (Vcc): 10V to 15V
- High Side Output Voltage (Vho): 10V to Vcc
- Low Side Output Voltage (Vlo): 0V to Vcc
- Peak Output Current (Iout): 290mA source, 600mA sink
- Oscillator Frequency Range: Up to 150kHz
- Deadtime: 1.2µs typical
- Operating Temperature Range: -40°C to +125°C
- Package: SOP8
- Electronic ballasts
- Switch-mode power supplies
- DC-DC converters
- Motor drives