SI8271AB-ASR

Isolators - Gate Drivers Overview

The SI8271AB-ASR is a single-channel galvanically isolated gate driver from Skyworks Solutions, designed for automotive applications with AEC-Q100 qualification. It utilizes silicon isolation technology to provide 2.5 kVRMS insulation voltage and features high common-mode transient immunity (CMTI). The device accepts TTL logic inputs within a 2.5V to 5.5V range and delivers a peak output current of 4 mA. Key electrical parameters include a maximum propagation delay of 75 ns, rise time of 16 ns, and fall time of 18 ns. It operates on a single SOIC-8 package with a power dissipation of 1.1 W across an extended temperature range of -40°C to +125°C.

Isolators - Gate Drivers Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• High common-mode transient immunity for robust signal integrity
• Integrated undervoltage lockout (UVLO) for safe operation
• Programmable dead-time control capability

Isolators - Gate Drivers Applications

• Switched-mode power supplies
• Solar inverters
• Motor control systems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix ASR indicates reel packaging configuration against official Skyworks documentation. Confirm that the AB variant corresponds to the 2.5 kV isolation rating and 5V UVLO threshold as specified in the datasheet. Ensure compatibility with automotive environmental requirements before finalizing procurement orders.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with low latency is required in automotive environments. The single-channel configuration suits simple gate drive needs where space efficiency in an SOIC-8 package is critical. Consider the 4 mA output current capability relative to the target MOSFET or IGBT gate charge requirements.

Isolators - Gate Drivers Part Context

Part of the Si827x series of isolated gate drivers, offering silicon-based isolation alternatives to traditional optocouplers. This series emphasizes high CMTI and low skew characteristics suitable for demanding industrial and automotive power electronics applications requiring reliable galvanic separation.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same family include SI8271AB-IS for tube packaging variants. Cross-reference SI8271BBD-ASR if different insulation ratings or output configurations are needed, ensuring functional equivalence in isolation voltage and channel count.