The IR21366S is a high-voltage, high-speed power MOSFET and IGBT driver with three independent high and low side referenced output channels from International Rectifier (now Infineon Technologies). It is designed for driving three-phase motors and other three-phase power conversion applications.

Applications:

• Three-Phase Motor Drives
• Inverters
• Power Supplies
• Induction Heating
• UPS (Uninterruptible Power Supplies)

Features:

• Floating Channel Designed for Bootstrap Operation
• Tolerant to Negative Transient Voltage
• Gate Drive Supply Range: 10V to 20V
• Undervoltage Lockout for All Channels
• Cross-Conduction Prevention Logic
• Matched Propagation Delay for All Channels
• 3.3V Logic Compatible

Benefits:

• Simplified Motor Control: Three independent high and low side drivers simplify the design and control of three-phase motors.
• Robust Operation: Tolerant to negative transient voltage, providing reliable operation in harsh environments.
• Enhanced System Protection: Undervoltage lockout prevents MOSFETs/IGBTs from operating in a low-efficiency or potentially damaging state.
• Improved Efficiency: Cross-conduction prevention logic minimizes switching losses and improves efficiency.
• Precise Timing: Matched propagation delay ensures accurate timing control for all channels.

The IR21366S is widely used in three-phase motor drive applications, where it controls the switching of power MOSFETs or IGBTs to drive the motor. Its independent high and low side drivers allow for flexible control of the motor's speed and torque. The bootstrap operation simplifies the power supply requirements, reducing the overall system cost. The negative transient voltage tolerance protects the driver from voltage spikes, ensuring reliable operation in harsh environments.

The undervoltage lockout feature prevents the MOSFETs/IGBTs from operating when the supply voltage is too low, preventing damage to the devices. The cross-conduction prevention logic ensures that the high and low side MOSFETs/IGBTs are never turned on simultaneously, minimizing switching losses and improving efficiency. The matched propagation delay ensures that all channels switch at the same time, providing precise timing control for the motor. The device's 3.3V logic compatibility allows it to be easily interfaced with microcontrollers and other digital circuits.