The IR1166S is a high-voltage, high-speed, self-oscillating half-bridge driver IC designed by International Rectifier (now Infineon Technologies). It is specifically designed for driving MOSFETs and IGBTs in various power conversion applications. The IR1166S integrates several key features to simplify the design and improve the performance of power supplies, motor drives, and other high-power systems.

Applications

• Electronic ballasts
• Half-bridge power supplies
• DC-DC converters
• Induction heating systems
• Motor drives

Features

• Self-oscillating half-bridge driver
• High-voltage capability
• High-speed operation
• Integrated dead-time control
• Overcurrent protection
• Undervoltage lockout (UVLO)
• Shutdown function

Benefits

• Simplified circuit design with integrated driver functionality.
• Improved efficiency with high-speed operation and dead-time control.
• Enhanced system reliability with overcurrent protection and UVLO.
• Reduced component count, leading to lower system cost.
• Robust performance in high-voltage applications.

Additional Details

The IR1166S typically operates from a high-voltage DC bus. It features a self-oscillating topology, which eliminates the need for an external oscillator. The integrated dead-time control prevents shoot-through currents by ensuring that both MOSFETs or IGBTs in the half-bridge are never on simultaneously. The overcurrent protection feature protects the power devices from damage in the event of an overload. The undervoltage lockout (UVLO) ensures that the driver does not operate until the supply voltage is within the specified range. The shutdown function allows the driver to be disabled remotely, providing an additional layer of protection. The IR1166S is available in various package options, allowing for flexible integration into different system designs. Its combination of high performance, integrated features, and robust protection makes it a popular choice for high-power applications.