SI8231AD-AS

Isolators - Gate Drivers Overview

The SI8231AD-AS is a dual-channel galvanically isolated gate driver from the Si823x series, manufactured by Skyworks Solutions. It features a wide-body SOIC-16 package and supports high-side and low-side configurations. The device provides 5 kVrms isolation voltage and operates within a temperature range of -40°C to +125°C. Key electrical parameters include a maximum propagation delay of 45 ns, rise and fall times of 20 ns, and an output current capability of 500 mA. It utilizes TTL logic inputs and has a typical operating supply current of 3.5 mA.

Isolators - Gate Drivers Feature Summary

• Provides galvanic isolation between control circuitry and power switches using capacitive coupling technology.
• Designed for high electromagnetic immunity in demanding industrial and automotive environments.
• Supports both high-side and low-side switching configurations with independent channel control.

Isolators - Gate Drivers Applications

• Automotive motor control systems
• Industrial inverters and converters
• High-voltage power supply gate driving

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm pinout and insulation ratings. Ensure compatibility with system isolation requirements and thermal management needs. Check for AEC-Q100 qualification if automotive application is intended. Confirm package type matches PCB footprint specifications.

Isolators - Gate Drivers Selection Notes

Select this component when high isolation voltage and robust noise immunity are required for gate drive applications. Consider the 500 mA peak output current for driving medium-power MOSFETs or IGBTs. Evaluate the SOIC-Wide-16 package for adequate creepage and clearance distances in high-voltage designs.

Isolators - Gate Drivers Part Context

This part belongs to the Si823x family of isolated gate drivers. It shares functional similarities with other models in the series but differs in insulation voltage, UVLO thresholds, and packaging options. The 'AD' designation typically indicates specific insulation and UVLO characteristics compared to other variants like AC or BD.

Isolators - Gate Drivers Replacement Considerations

Official substitutes within the Si823x family include SI8231AC-AS1 and SI8231BD-D-IS, subject to verification of insulation voltage and UVLO threshold compatibility with the original design requirements.