SI82394BD-AS3

Isolators - Gate Drivers Overview

The SI82394BD-AS3 is a dual-channel, galvanically isolated gate driver from the Si8239x series by Skyworks Solutions. It utilizes capacitive coupling technology to provide high electromagnetic immunity and reliable signal transmission across isolation barriers. Designed for automotive applications, it features a non-inverting configuration with TTL logic compatibility. The device operates within a temperature range of -40°C to +125°C and is housed in a SOIC-Wide-14 package. Key electrical specifications include a maximum propagation delay of 40 ns, rise and fall times of 12 ns, and an output current capability of 4 A. It supports an insulation voltage of 3250 Vrms and dissipates up to 2.1 W of power.

Isolators - Gate Drivers Feature Summary

• Capacitive coupling isolation technology ensures high electromagnetic immunity
• Automotive-grade qualification for robust performance in harsh environments
• Dual-channel design with non-inverting logic configuration
• High-speed switching capabilities with low propagation delay

Isolators - Gate Drivers Applications

• Automotive power electronics systems
• Motor control applications requiring galvanic isolation
• Industrial inverters and converters
• High-voltage switch-mode power supplies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix AS3 against official Skyworks documentation to confirm packaging and tape-and-reel specifications. Ensure the component meets the required automotive quality standards for your target application. Cross-reference the SOIC-Wide-14 footprint with your PCB layout guidelines. Confirm that the 3250 Vrms insulation rating aligns with your system's safety isolation requirements before finalizing procurement.

Isolators - Gate Drivers Selection Notes

Select this model when automotive reliability and high electromagnetic immunity are critical. The 4 A output current suits driving medium-power MOSFETs or IGBTs. Consider the 8 V UVLO threshold if your supply voltage varies significantly. Compare against other Si8239x variants if different insulation voltages or package types are needed. Ensure the non-inverting logic matches your control signal polarity without additional inversion stages.

Isolators - Gate Drivers Part Context

Part of the Si8239x family of isolated gate drivers, the SI82394BD-AS3 leverages Skyworks' proprietary capacitive isolation technology. This family is designed to replace traditional magnetic isolators in demanding applications. The BD variant specifically denotes the 8 V UVLO threshold and automotive grade. It shares core architecture with industrial counterparts but undergoes stricter qualification processes for automotive deployment.

Isolators - Gate Drivers Replacement Considerations

Check for direct substitutes within the Si8239x family such as SI82394AD4-AS3 or SI82394CD4-IS3, noting differences in UVLO thresholds and insulation ratings. Verify pinout compatibility when replacing with similar devices from other manufacturers. Ensure any substitute maintains the required 3250 Vrms isolation and automotive qualification status.