SI8275GBD-AS1R

Isolators - Gate Drivers Overview

The SI8275GBD-AS1R is a dual-channel isolated gate driver from Skyworks Solutions, utilizing RF coupling technology for galvanic isolation. It features a 2500Vrms insulation voltage and high common-mode transient immunity of 200kV/µs. The device provides peak output currents of 1.8A (high) and 4A (low), with maximum propagation delays of 75ns and pulse width distortion under 8ns. Rise and fall times are typically 10.5ns and 13.3ns respectively. Operating within a -40°C to +125°C range, it supports output supply voltages from 4.2V to 30V and is housed in a 14-QFN(5x5) package.

Isolators - Gate Drivers Feature Summary

• High-speed RF coupling technology ensures low latency and minimal skew between channels
• Robust automotive-grade isolation with 2500Vrms capability and high CMTI
• Integrated UVLO functionality enhances system reliability during power transitions

Isolators - Gate Drivers Applications

• Automotive motor control systems
• Industrial inverter drives
• High-voltage DC/DC converter topologies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix AS1R against official Skyworks documentation to confirm the reel packaging configuration and tape-and-reel specifications. Ensure that the 14-QFN(5x5) footprint matches your PCB design guidelines. Cross-reference the automotive qualification status directly with the manufacturer's latest datasheet revision to validate compliance requirements for your specific application environment.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with precise channel matching is required. The dual-channel architecture minimizes skew, making it suitable for half-bridge and full-bridge configurations. Consider the 4A peak current capability for driving medium-power MOSFETs or IGBTs. Verify that the input logic levels are compatible with your microcontroller or PWM controller outputs before integration.

Isolators - Gate Drivers Part Context

This part belongs to the Si827x family of isolated gate drivers, which leverages Skyworks' proprietary RF coupling technology. Unlike traditional optical isolators, this approach offers superior longevity and consistent performance over temperature variations. The series is designed to meet stringent automotive reliability standards while providing compact solutions for modern power electronics applications requiring high-density packaging.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same family include variants with different pin counts or packages, such as the SI8275GBD-IM1R in a QFN package. When replacing, ensure the new part maintains the 2500Vrms isolation rating and similar propagation delay characteristics to preserve system timing integrity.