IR4427

Gate Driver Overview

The IR4427 is a dual low-side gate driver IC designed for power MOSFETs and IGBTs. It operates with a supply voltage range of 6 V to 20 V. The device provides a source current of 2.3 A and a sink current of 3.3 A. Propagation delays are specified at 85 ns for turn-on and 65 ns for turn-off. It features non-isolated topology and accepts CMOS or LSTTL logic inputs. The component supports an industrial quality grade.

Gate Driver Feature Summary

• Dual channel configuration for independent low-side switching control
• High peak output current capability for rapid power stage transitions
• CMOS Schmitt-triggered inputs ensure noise immunity and clean signal processing

Gate Driver Applications

• Gate driving for power MOSFETs in industrial motor drives
• IGBT gate drive circuits for power conversion systems
• General purpose low-side switching applications requiring high speed

Gate Driver Procurement Notes

Verify the specific package variant, such as PDIP-8 or SOIC-8, against the design requirements. Confirm that the selected part number matches the required pinout and thermal characteristics. Check for any obsolescence notices or lifecycle status updates from Infineon Technologies before finalizing procurement plans.

Gate Driver Selection Notes

Select this component when a dual low-side driver with asymmetric current sourcing and sinking is required. Ensure the input logic levels match the controlling microcontroller or FPGA outputs. Verify that the 20 V maximum supply voltage aligns with the available system power rails.

Gate Driver Part Context

The IR4427 belongs to the IR(S)442X series of gate drivers. It serves as a non-isolated alternative to optocoupler-based solutions. The device integrates latch-immune technology to protect against voltage transients during switching operations.

Gate Driver Replacement Considerations

The IRS4427 is a related variant offering different propagation delay characteristics and packaging options. Verify compatibility regarding pin assignments and electrical specifications before substitution.