SI8271AB-AS

Isolators - Gate Drivers Overview

The SI8271AB-AS is a single-channel galvanically isolated gate driver from Skyworks Solutions, utilizing silicon isolation technology to provide high common-mode transient immunity. It operates with a supply voltage range of 2.5 V to 5.5 V and features a 400 mV input hysteresis for noise filtering. The device offers a maximum propagation delay of 75 ns, with rise and fall times of 16 ns and 18 ns respectively. It supports an output current of 4 mA and includes under-voltage lockout (UVLO) functionality. The component is housed in an 8-pin SOIC package and is designed for industrial applications requiring reliable signal transmission across isolation barriers.

Isolators - Gate Drivers Feature Summary

• High common-mode transient immunity ensures stable operation in noisy environments
• Programmable dead time allows precise control of switching sequences
• Under-voltage lockout protects against improper power supply conditions

Isolators - Gate Drivers Applications

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

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm tape-and-reel packaging and automotive qualification status. Ensure the selected variant matches the required insulation voltage and logic compatibility for your design. Cross-reference datasheet revisions to confirm pinout and electrical characteristics remain consistent with previous orders.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed isolation with low latency is required for single-channel gate driving. Consider the 2.5 kVRMS isolation rating and TTL logic compatibility. Evaluate the need for programmable dead time and UVLO features relative to the target power stage. Compare performance metrics against alternative isolated drivers if higher channel counts or different isolation voltages are needed.

Isolators - Gate Drivers Part Context

The SI8271 series represents Skyworks' silicon-based isolated gate drivers, offering advantages over traditional optical couplers such as improved reliability and lower power consumption. This specific model focuses on single-channel applications, providing a compact solution for modern power electronics where space and efficiency are critical constraints.

Isolators - Gate Drivers Replacement Considerations

Check Skyworks documentation for direct pin-compatible alternatives within the Si8271 family. Verify that any substitute maintains the same isolation voltage, propagation delay, and package dimensions to ensure seamless integration without PCB redesign.