SI8284DC-IS

Isolators - Gate Drivers Overview

The SI8284DC-IS is a galvanically isolated gate driver from Skyworks Solutions, designed for driving Silicon Carbide (SiC) and IGBT power switches. It integrates a capacitive coupling signal path with a feature-rich integrated DC-DC converter, eliminating the need for external bias supplies on the secondary side. The device operates within a wide supply voltage range of 10.8 V to 36 V for the high-side output and supports input logic voltages from 2.5 V to 5.5 V. Packaged in a 24-pin SOIC, it provides robust isolation capabilities suitable for demanding power conversion environments.

Isolators - Gate Drivers Feature Summary

• Integrates an isolated DC-DC converter to provide self-powered operation without external auxiliary supplies.
• Utilizes capacitive coupling technology for high-speed signal transmission across the isolation barrier.
• Optimized specifically for driving wide-bandgap SiC MOSFETs and traditional IGBTs.
• Features a single-channel configuration with high peak output current capability.

Isolators - Gate Drivers Applications

• Isolated gate driving for SiC-based motor drives
• High-frequency industrial power inverters
• Solar micro-inverter systems
• On-board chargers for electric vehicles

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'IS' to confirm the operating temperature range and insulation characteristics match the design requirements. Ensure compatibility with the 24-pin SOIC package footprint during PCB layout. Confirm that the integrated DC-DC converter specifications align with the target load capacitance and switching frequency demands of the connected power switch.

Isolators - Gate Drivers Selection Notes

Select this component when a compact, self-powered isolated driver is required for SiC or IGBT applications. The integrated DC-DC simplifies board space by removing external transformer components. Consider the 24-pin SOIC package size relative to available board area. Verify that the input logic levels are compatible with the controlling microcontroller or DSP output stages.

Isolators - Gate Drivers Part Context

This part belongs to the Si828x family of isolated gate drivers from Skyworks Solutions. The family includes variants such as the SI8281, SI8283, and SI8284, differing primarily in channel count and specific integration features. The SI8284 series is distinguished by its integrated DC-DC converter, offering a complete solution for high-voltage isolation in power electronics.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes include other parts within the Si8284 family, such as the SI8284ED-IS, which may differ in pinout or specific electrical ratings. Cross-referencing with competitors like Analog Devices' ISO784x or Texas Instruments' UCC21520 requires careful verification of pin compatibility and isolation voltage ratings.