AUIRS2181STR

Gate Driver Overview

The AUIRS2181STR is an automotive-grade half-bridge gate driver IC designed for high-voltage power switching applications. It integrates independent high-side and low-side drivers within a compact 8-SOIC package. The device supports supply voltages between 10 V and 20 V, delivering peak output currents of 1.9 A source and 2.3 A sink. It features propagation delays up to 160 ns (turn-on) and 200 ns (turn-off), with rise/fall times typically around 15 ns. Qualified under AEC-Q100 standards, it operates reliably across a junction temperature range of -40°C to +150°C.

Gate Driver Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for enhanced reliability in vehicle environments.
• Integrated bootstrap diode eliminates the need for external components, simplifying circuit design.
• Functional level-shift isolation allows direct interfacing with low-voltage control logic while driving high-side switches.

Gate Driver Applications

• Automotive motor control systems
• High-side and low-side power switching stages
• DC-DC converter topologies requiring isolated drive signals

Gate Driver Procurement Notes

Verify the specific suffix 'STR' indicates tape-and-reel packaging when ordering. Confirm that the component meets current RoHS directives and REACH regulations for your target market. Ensure compatibility with your PCB footprint dimensions for the 8-SOIC package. Check for any obsolescence notices or lifecycle status updates from Infineon before finalizing procurement plans.

Gate Driver Selection Notes

Select this component when automotive reliability and functional safety are required for half-bridge configurations. It is suitable for driving N-channel MOSFETs or IGBTs in high-voltage environments up to 600 V. Consider the 1.9 A/2.3 A output capability against the gate charge requirements of the target power devices. Verify that the operating voltage range aligns with your system's power supply constraints.

Gate Driver Part Context

This part belongs to the IRS2181 family of high-voltage gate drivers. The 'AU' prefix denotes automotive qualification, distinguishing it from the standard industrial IRS2181 variants. It shares core electrical characteristics with other members like the AUIRS2181S but differs in packaging format and manufacturing lot traceability requirements specific to automotive supply chains.

Gate Driver Replacement Considerations

The non-automotive grade IRS2181S serves as a functional equivalent for industrial applications where AEC-Q100 qualification is not mandatory. Designers must verify pinout compatibility and ensure that thermal performance specifications meet the new application's requirements when substituting parts.