Infineon IR2302STRPBF High and Low Side Driver IC: Features and Application Circuits
The Infineon IR2302STRPBF is a high-performance, high-voltage power MOSFET and IGBT driver specifically engineered to control both high-side and low-side switches in a half-bridge configuration. This monolithic integrated circuit is renowned for its robustness and efficiency, making it a cornerstone component in power conversion systems, motor drives, and inverters.
A key feature of this driver IC is its integrated bootstrap functionality, which simplifies the driving of the high-side N-channel MOSFET. This eliminates the need for a separate isolated power supply, reducing both system complexity and cost. The device is designed to operate with high noise immunity, featuring robust protection against negative voltage transients. Furthermore, it offers a versatile operating voltage range from 10V to 20V, making it suitable for various industrial and consumer applications.
The IR2302STRPBF is equipped with matched propagation delays for both the high-side and low-side channels, which is critical for preventing shoot-through currents that can damage the power switches. Its 3.3V, 5V, and 15V logic compatible inputs allow for direct interfacing with microcontrollers and DSPs, providing significant design flexibility.
Typical Application Circuits
The most common application for the IR2302STRPBF is in a half-bridge or full-bridge power stage. A standard application circuit includes:
1. The IR2302STRPBF Driver IC.
2. Two N-channel MOSFETs (or IGBTs) arranged in a half-bridge.
3. A bootstrap circuit consisting of a diode and capacitor. This circuit generates the voltage required to keep the high-side switch fully enhanced.
4. Decoupling capacitors placed close to the VCC and VBS pins to ensure stable operation and provide necessary switching currents.
This setup is fundamental to the operation of DC-AC inverters (for motor control or UPS systems) and switch-mode power supplies (SMPS). The driver accepts a single PWM input signal from a controller and generates two complementary output signals (HO and LO) to drive the upper and lower transistors, effectively converting DC power into a controlled AC output.
The Infineon IR2302STRPBF stands out as a highly reliable and efficient solution for driving half-bridge circuits. Its integrated bootstrap diode, high noise immunity, and wide logic compatibility make it an exceptional choice for designers seeking to build compact, cost-effective, and robust high-power switching systems.
Keywords:
Half-Bridge Driver
Bootstrap Circuit
High-Side Switching
MOSFET Driver
Noise Immunity
