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IR2104

IR2104 Description

The IR2104 from Infineon Technologies is a high-voltage, high-speed gate driver IC designed for half-bridge configurations in power electronics applications. This obsolete but still relevant component operates within a 10V to 20V supply range, supporting synchronous driving of MOSFETs or IGBTs with a bootstrap high-side voltage capability of up to 600V. It features two independent drivers with peak output currents of 210mA (source) and 360mA (sink), ensuring robust switching performance. The rise/fall times (100ns, 50ns typ) make it suitable for medium-frequency switching applications. Packaged in an 8-pin DIP (Through Hole), it is ideal for prototyping and industrial systems requiring reliable gate driving.

IR2104 Features

• High-Side Voltage Support: Bootstrap operation up to 600V for driving high-side switches.
• Fast Switching: Optimized rise/fall times (100ns/50ns) for efficient power conversion.
• Dual Output Drivers: Independent 210mA source / 360mA sink capability for strong gate drive.
• Wide Logic Compatibility: VIL = 0.8V, VIH = 3V for interfacing with 3.3V/5V microcontrollers.
• Robust Construction: MSL 1 (Unlimited) moisture sensitivity, suitable for industrial environments.
• Through-Hole Package: 8-DIP for easy integration in prototyping and legacy systems.

IR2104 Applications

The IR2104 excels in:

• Motor Drives: Driving half-bridge IGBT/MOSFET stages in BLDC motor controllers.
• Switched-Mode Power Supplies (SMPS): High-side switching in AC-DC or DC-DC converters.
• Inverters: Used in solar inverters and UPS systems for efficient power conversion.
• Industrial Automation: Reliable gate driving in PLC-based power control systems.

Conclusion of IR2104

Though marked obsolete, the IR2104 remains a robust choice for medium-power, half-bridge gate driving due to its high-voltage tolerance, fast switching, and dual-drive capability. Its through-hole package makes it ideal for legacy designs and prototyping, while its performance suits motor drives, inverters, and industrial power systems. Engineers seeking a proven, high-voltage gate driver for cost-sensitive or maintenance-heavy applications may still find value in this Infineon solution.