SI8271BB-ASR

Isolators - Gate Drivers Overview

The SI8271BB-ASR is a single-channel, galvanically isolated gate driver from Skyworks Solutions. It features high common-mode transient immunity (CMTI) of 25 kV/µs and an isolation voltage of 2.5 kVrms. The device operates with an 8 V under-voltage lockout (UVLO) and supports input voltages from 2.5 V to 5.5 V. It delivers peak currents of 1.8 A for high-side and 4 A for low-side switching. Key timing parameters include a maximum propagation delay of 75 ns, rise time of 10.5 ns, and fall time of 13.3 ns. It functions within a temperature range of -40°C to +125°C in an SOIC-8 package.

Isolators - Gate Drivers Feature Summary

• Provides high common-mode transient immunity for reliable signal transmission in noisy environments
• Delivers strong drive capability with asymmetric peak currents for efficient power switching
• Integrates UVLO protection to ensure stable operation during power supply fluctuations

Isolators - Gate Drivers Applications

• Automotive power electronics systems
• Industrial motor control drives
• High-frequency DC-DC converter topologies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm reel packaging and automotive-grade qualification. Ensure the selected variant matches the required UVLO threshold and output current specifications for your circuit design. Cross-reference the datasheet revision date to guarantee compatibility with current manufacturing standards and pin configurations.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with robust noise immunity is required. The asymmetric current drive suits applications needing faster turn-off or turn-on characteristics. Consider the SOIC-8 footprint for space-constrained designs. Validate thermal performance at maximum operating temperatures to maintain reliability in demanding industrial or automotive conditions.

Isolators - Gate Drivers Part Context

Part of the Si827x family of isolated gate drivers designed for high-performance power management. This series emphasizes speed and reliability in electric vehicle and industrial applications. The SI8271BB-ASR specifically targets automotive use cases requiring stringent transient immunity and wide operating temperature ranges compared to standard industrial variants.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes may include other Skyworks Si827x variants with matching UVLO levels. Verify equivalent CMTI ratings and peak current capabilities before substitution. Check package dimensions and pinout compatibility to ensure seamless integration into existing PCB layouts without redesign.