IR4426

Gate Driver Overview

The IR4426SPBF is a dual low-side gate driver IC from Infineon Technologies, designed for high-speed power MOSFET and IGBT applications. It operates with a supply voltage range of 6 V to 20 V and features an inverting configuration. The device provides a peak output current of 3.3 A sink and 2.3 A source capabilities. Key timing parameters include a rise time of 15 ns and a fall time of 10 ns, with propagation delays up to 85 ns. It is housed in an SOIC-8 surface-mount package.

Gate Driver Feature Summary

• Dual-channel architecture for independent control of two low-side switches
• High peak output current capability for rapid switching of power devices
• Compact SOIC-8 surface-mount package design
• Inverting logic input configuration

Gate Driver Applications

• High-speed power MOSFET gate driving
• IGBT gate driving in power conversion circuits
• DC-DC converter bridge arms
• Motor drive inverter stages

Gate Driver Procurement Notes

Verify the specific suffix (e.g., SPBF vs STRPBF) against the required packaging format, as tube and reel variants exist. Confirm component availability status, as some listings indicate end-of-life or obsolescence warnings. Ensure the selected variant matches the required lead time and minimum order quantity constraints for production planning.

Gate Driver Selection Notes

Select this component when a non-isolated, dual low-side driver is required for synchronous rectification or half-bridge topologies. The 6 V to 20 V supply range accommodates standard logic levels. Consider the 3.3 A sink current for fast turn-off requirements. Verify that the inverting input polarity aligns with the control signal logic of the system design.

Gate Driver Part Context

The IR4426 belongs to Infineon's family of dual low-side gate drivers, often paired with the IR4427 and IR4428 series. These components share similar architectural foundations but may differ in specific current ratings or delay characteristics. The IR4426 specifically targets cost-sensitive applications requiring reliable switching performance for medium-power converters.

Gate Driver Replacement Considerations

The IR4426STRPBF is a tape-and-reel version of the same functional device, offering identical electrical specifications but differing only in packaging format for automated assembly.