SI82391CB-AS1

Isolators - Gate Drivers Overview

The SI82391CB-AS1 is a dual-channel, galvanically isolated gate driver from the Si8239x series by Skyworks Solutions. It features capacitive coupling technology for high electromagnetic immunity and operates within an automotive temperature range of -40°C to +125°C. The device provides 2.5 kVrms isolation voltage and supports non-inverting logic configurations. Key electrical parameters include a maximum propagation delay of 40 ns, rise/fall times of 12 ns, and a peak output current capability of 4 A per channel. It utilizes a 16-pin SOIC-Wide package and is qualified under AEC-Q100 standards for automotive reliability.

Isolators - Gate Drivers Feature Summary

• Automotive-grade qualification ensuring reliability in harsh environments
• High electromagnetic immunity via advanced capacitive coupling technology
• Dual-channel design with independent signal paths for bridge applications

Isolators - Gate Drivers Applications

• Half-bridge and full-bridge IGBT/MOSFET drivers
• Automotive powertrain and motor control systems
• Industrial inverters and converters

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'AS1' against official Skyworks documentation to confirm pinout and UVLO thresholds. Ensure compatibility with your PCB footprint for the 16-SOIC package. Cross-reference the AEC-Q100 status if strict automotive compliance is required for your final assembly.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with robust noise immunity is critical. The 4 A drive strength suits medium-power MOSFETs and IGBTs. Consider the 12 V UVLO variant if higher gate drive voltages are needed compared to the 8 V version. Verify thermal dissipation requirements given the 2.1 W power handling capability in the SOIC-Wide package.

Isolators - Gate Drivers Part Context

Part of the Si8239x family, which offers isolated gate drivers with integrated level shifting. This series replaces traditional transformer-based isolators, offering smaller form factors and better performance consistency. The SI82391CB-AS1 specifically targets automotive applications requiring dual-channel isolation with high reliability standards.

Isolators - Gate Drivers Replacement Considerations

Check SI82391BD-AS or SI82391CD-AS for similar functionality with different UVLO thresholds. Verify pin-to-pin compatibility before substitution. Ensure the replacement part meets the same AEC-Q100 automotive qualification requirements.