SI8281CC-IS

Isolators - Gate Drivers Overview

The SI8281CC-IS is a galvanically isolated gate driver from Skyworks Solutions, designed for SiC and IGBT applications. It features an integrated DC/DC converter providing up to 2W of isolated power. The device utilizes capacitive coupling technology with a 5000Vrms isolation rating. Key electrical parameters include a peak output current of 4A, supply voltage range of 2.8V to 5.5V, and propagation delays of 50ns maximum. It offers high common-mode transient immunity of 35kV/µs and operates within a temperature range of -40°C to 125°C.

Isolators - Gate Drivers Feature Summary

• Integrates a 2W DC/DC converter for isolated power generation
• Utilizes advanced capacitive coupling for signal transmission
• Provides robust 5000Vrms galvanic isolation barrier
• Delivers high peak drive current suitable for wide-bandgap devices

Isolators - Gate Drivers Applications

• Silicon Carbide (SiC) transistor gate driving
• Insulated Gate Bipolar Transistor (IGBT) switching control
• Inverter circuits in motor drives
• Industrial power conversion systems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'IS' corresponds to the standard SOIC-20 package configuration as documented in official Skyworks datasheets. Confirm that the AEC-Q100 automotive qualification status aligns with your system requirements. Ensure the integrated DC/DC output specifications meet the load demands of the target gate driver application before procurement.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with integrated isolated power is required. The capacitive coupling technology offers superior reliability compared to optical alternatives. Consider the 4A peak current capability for driving large SiC or IGBT modules. Verify that the 5000Vrms isolation level satisfies the safety standards of the high-voltage side circuit design.

Isolators - Gate Drivers Part Context

The SI8281CC-IS belongs to the SI828x ISOdriver family, which focuses on isolated gate drivers for power electronics. This series replaces traditional optocouplers by offering higher speed, lower power consumption, and greater longevity. The integration of the DC/DC converter simplifies the design of isolated power supplies for floating gate drivers.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same family include variants such as SI8281CD-IS or SI8281BD-IS, which may differ in pinout or specific electrical ratings. Cross-referencing with other Skyworks ISOdriver models is recommended to ensure compatibility with existing board layouts and thermal management strategies.