IR2103 Half-Bridge Gate Driver IC – High-Voltage Power MOSFET & IGBT Driver

Overview

The IR2103 is a foundational component in high-performance power switching. By providing the necessary voltage boost to drive the gates of power MOSFETs or IGBTs in a half-bridge topology, it acts as the critical bridge between your low-voltage microcontroller (like a PIC or dsPIC) and the high-voltage power stage. It is designed to handle the complex switching requirements of UPS systems, solar inverters, and motor drives.

Key Features

• Half-Bridge Capability: Drives both high-side and low-side switches with a single IC.

• Floating Channel: Capable of operating up to 600V, providing flexibility for various DC bus voltages.

• Cross-Conduction Prevention: Internal dead-time protection helps prevent shoot-through, which is the #1 cause of IGBT failure.

• Undervoltage Lockout: Protects your power devices by shutting down if the supply voltage drops too low.

Technical Specifications

Ideal Applications

• Inverters: Generating the gate signals for the power stage of solar and backup inverters.

• Motor Drives: Controlling brushless DC motors and AC induction motors.

• Power Supplies: Driving high-frequency resonant power converters.