AUIRS21281S

Gate Driver Overview

The AUIRS21281S is an automotive-grade, single-channel high-side gate driver designed for IGBT and MOSFET applications. It features a floating channel rated up to 600V, enabling direct control of high-side switches in half-bridge configurations. The device integrates overcurrent protection with a latch-off mechanism to safeguard power devices during fault conditions. It operates within a supply voltage range of 10V to 20V and supports CMOS and TTL logic inputs. The component is housed in an 8-SOIC package and is qualified under AEC-Q100 standards for reliability in harsh automotive environments.

Gate Driver Feature Summary

• Integrated overcurrent protection with automatic latch-off functionality
• High-voltage floating output channel rated for 600V operation
• Automotive qualification compliant with AEC-Q100 standards
• Compatible with standard CMOS and TTL logic input signals

Gate Driver Applications

• Automotive motor control systems
• High-side switching in automotive power stages
• IGBT and MOSFET gate drive circuits
• Half-bridge converter topologies

Gate Driver Procurement Notes

Verify the specific suffix and revision level against the official Infineon datasheet to ensure compatibility with current design requirements. Confirm that the procurement source provides valid traceability documentation required for automotive-grade components. Check for any obsolescence notices or recommended replacement parts from the manufacturer before finalizing orders.

Gate Driver Selection Notes

Select this component when a single-channel high-side driver with integrated fault protection is required for automotive applications. Ensure the system voltage does not exceed the 600V rating of the floating channel. Verify that the load current remains within the safe operating area defined by the datasheet. Consider the thermal performance of the SOIC-8 package relative to the expected power dissipation in the application environment.

Gate Driver Part Context

This part belongs to the IR2128 family of high-side gate drivers, specifically tailored for automotive use. It shares functional similarities with non-automotive variants but includes enhanced testing and qualification processes. The 'AU' prefix denotes automotive grade compliance, distinguishing it from standard industrial versions while maintaining similar electrical characteristics and pinout configurations.

Gate Driver Replacement Considerations

Consult the official Infineon product change notification list for verified substitutes. Direct replacements may include other AEC-Q100 qualified high-side drivers with comparable voltage ratings and current capabilities. Ensure any substitute maintains the same latch-off protection behavior and package dimensions.