The IRS21814 is a high voltage, high speed power MOSFET and IGBT driver with independent high and low side referenced output channels. Manufactured by International Rectifier (now Infineon Technologies), this driver is designed for applications such as motor control, power supplies, and lighting systems, where efficient and reliable switching of power devices is crucial.

Applications

• Motor Control
• Power Supplies
• Lighting Systems
• Class D Amplifiers
• Induction Heating

Features

• Floating Channel Designed for Bootstrap Operation to +600V
• Typically 350mA/650mA Sourcing/Sinking Current Driving Capability
• Tolerant to Negative Transient Voltage, dV/dt Immune
• Gate Drive Supply Range from 10V to 20V
• Logic Input 3.3V Capability
• CMOS Schmitt-Triggered Inputs with Pull-Down
• Shutdown Input
• Matched Propagation Delay for Both Channels

Benefits

• Improved System Efficiency: Fast switching speeds and high current drive capability minimize switching losses, resulting in higher system efficiency.
• Robust Operation: Tolerant to negative transient voltages and dV/dt immune, ensuring reliable operation in harsh environments.
• Simplified Design: Floating channel designed for bootstrap operation simplifies the gate drive circuitry.
• Versatile Application: Suitable for a wide range of applications including motor control, power supplies, and lighting systems.
• Enhanced Safety: Shutdown input provides a means to disable the driver in the event of a fault condition.

Technical Specifications

• High Side Voltage: 600V
• Output Current: 350mA/650mA (Sourcing/Sinking)
• Gate Drive Supply Voltage: 10V to 20V
• Logic Input Voltage: 3.3V
• Operating Temperature Range: -40°C to +125°C
• Package: 14-Pin DIP or SOIC

The IRS21814 is a robust and versatile high-voltage gate driver designed for demanding applications. Its floating channel design, high current drive capability, and tolerance to negative transient voltages make it an excellent choice for driving power MOSFETs and IGBTs in a wide range of applications. The matched propagation delay ensures accurate switching timing, while the shutdown input provides an added level of safety. The logic input compatibility with 3.3V signals simplifies interfacing with microcontrollers and other logic devices.