IR4427STRPBF

Gate Driver Overview

The IR4427STRPBF is a dual low-side gate driver IC designed for driving power MOSFETs and IGBTs. It operates with a supply voltage range of 6 V to 20 V and delivers a peak output current of 3.3 A (sink) and 2.3 A (source). The device features propagation delays of 85 ns (turn-on) and 65 ns (turn-off), with rise and fall times of 55 ns. It utilizes CMOS Schmitt trigger inputs for noise immunity and includes under-voltage lockout (UVLO) protection. Packaged in an 8-pin SOIC, it functions within a temperature range of -40°C to 150°C.

Gate Driver Feature Summary

• Dual-channel architecture providing independent control for two low-side switches
• High-current output capability supporting fast switching of power devices
• CMOS Schmitt trigger inputs ensure signal integrity against electrical noise
• Integrated under-voltage lockout prevents operation during insufficient supply conditions

Gate Driver Applications

• High-frequency AC-DC and DC-DC power converters
• Motor drive systems including inverters and servo controllers
• Synchronous rectification circuits in server power supplies

Gate Driver Procurement Notes

Verify the specific suffix 'STRPBF' corresponds to the tape-and-reel packaging variant required for automated assembly processes. Confirm that the 25V maximum rating aligns with the target application's bus voltage requirements. Ensure compatibility with the 6V to 20V auxiliary supply range available in the design. Check for RoHS compliance documentation if environmental regulations apply to the final product deployment.

Gate Driver Selection Notes

Select this component when a non-isolated dual low-side configuration is required for cost-sensitive applications. It is suitable for designs needing matched propagation delays between channels to minimize cross-conduction risks. Consider its 3.3A sink current for driving large gate capacitance loads efficiently. Evaluate the SOIC-8 package constraints regarding thermal dissipation and PCB space availability compared to larger packages.

Gate Driver Part Context

This part belongs to the IRS4426/IRS4427/IRS4428 series of high-voltage gate drivers from Infineon Technologies. These devices are engineered for industrial and consumer power electronics, offering a balance of performance and reliability. The series supports various topologies requiring precise timing control for power switches, serving as a bridge between logic-level control signals and high-power semiconductor devices.

Gate Driver Replacement Considerations

The IR4427S is a pin-compatible alternative within the same family. Verify that the specific suffix variations do not alter the functional specifications or packaging type before substitution.