SI8281ED-IS

Isolators - Gate Drivers Overview

The SI8281ED-IS is a galvanically isolated gate driver from Skyworks Solutions, designed for high-voltage switching applications involving SiC and IGBT devices. It features an integrated DC-DC converter providing up to 4A peak output current with a supply voltage of 30V. The device operates on a single 5.5V maximum input supply, drawing 2.5mA working current. Key electrical parameters include a rise time of 10.5ns and fall time of 13.3ns, with an Rds(on) of 2.5 Ohms. It supports inverting and non-inverting configurations within a SOIC-20 package, operating between -40°C and +125°C.

Isolators - Gate Drivers Feature Summary

• Integrated DC-DC converter enables compact design without external isolation power supplies
• Capacitive coupling technology provides high reliability and reduced size compared to optical solutions
• Supports both inverting and non-inverting logic configurations for flexible interface options

Isolators - Gate Drivers Applications

• Isolated gate driving for Silicon Carbide (SiC) transistors
• Gate driving for Insulated Gate Bipolar Transistors (IGBTs)
• Industrial inverter systems
• Motor drive circuits

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ED' against official Skyworks documentation to confirm automotive qualification status and exact pinout configuration. Ensure the SOIC-20 package matches the target PCB footprint. Confirm that the integrated DC-DC capability meets the required isolation voltage ratings for the specific application environment before finalizing procurement.

Isolators - Gate Drivers Selection Notes

Select this component when designing circuits requiring high-speed isolation for wide-bandgap semiconductors like SiC. The integrated power supply simplifies bill of materials by eliminating separate isolated converters. Consider the 4A peak current capability for driving larger gate charges efficiently. Evaluate thermal performance given the 300mW power dissipation limit in the SOIC-20 package under continuous operation conditions.

Isolators - Gate Drivers Part Context

This part belongs to the Si828x ISOdriver family, which utilizes Skyworks' capacitive isolation technology. This series replaces traditional optocouplers in industrial and automotive power electronics. The family offers improved common-mode transient immunity and lower propagation delay variations compared to legacy photonic isolation methods.

Isolators - Gate Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.