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IR21094S

IR21094S Description

The IR21094S from Infineon Technologies is a high-voltage, high-speed half-bridge gate driver IC designed for driving MOSFETs and IGBTs in synchronous applications. Housed in a 14-SOIC package, this obsolete but robust driver operates within a 10V to 20V supply range, making it suitable for high-side voltage applications up to 600V bootstrap. With dual drivers, it delivers peak output currents of 200mA (source) and 350mA (sink), ensuring efficient switching performance. The device features fast rise/fall times (150ns/50ns typ.) and supports logic-level inputs (VIL=0.8V, VIH=2.9V), enabling precise control in power electronics systems.

IR21094S Features

• High-Side Voltage Capability: Supports up to 600V bootstrap, ideal for high-voltage applications.
• Fast Switching: Optimized 150ns rise and 50ns fall times minimize switching losses.
• Dual-Channel Synchronous Drive: Two independent drivers for half-bridge or synchronous buck topologies.
• Robust Output Current: 200mA source / 350mA sink ensures strong gate drive for power switches.
• Wide Supply Range: Operates from 10V to 20V, compatible with standard logic levels.
• Surface-Mount Design: 14-SOIC package for compact PCB integration.
• REACH Unaffected: Compliant with environmental regulations.

IR21094S Applications

The IR21094S excels in high-voltage, high-frequency switching circuits, including:

• Motor Drives: Precision control in BLDC and stepper motor systems.
• Switch-Mode Power Supplies (SMPS): Efficient half-bridge and full-bridge converters.
• Inverters: Reliable gate driving in solar inverters and UPS systems.
• Industrial Power Systems: Suitable for industrial automation and high-voltage DC-DC converters.

Conclusion of IR21094S

Though marked obsolete, the IR21094S remains a high-performance gate driver for demanding power electronics. Its high-voltage tolerance, fast switching, and dual-channel design make it a preferred choice for motor control, inverters, and SMPS. Engineers seeking a reliable, high-speed driver for legacy or niche applications will find the IR21094S a capable solution despite its discontinued status.