SI8275GB-IM1R

Isolators - Gate Drivers Overview

The SI8275GB-IM1R is a dual-channel digital isolator gate driver utilizing Skyworks RF coupling technology. It features a 2500Vrms isolation voltage and supports output supply voltages from 4.2V to 30V. The device delivers peak output currents of 4A, with typical rise and fall times of 10.5ns and 13.3ns respectively. Maximum propagation delays are specified at 60ns for both high-to-low and low-to-high transitions, with a maximum pulse width distortion of 8ns. It operates within a temperature range of -40°C to 125°C and is housed in a 14-QFN (5x5) package.

Isolators - Gate Drivers Feature Summary

• Utilizes proprietary RF coupling technology for galvanic isolation without magnetic components
• Provides high common-mode transient immunity for reliable operation in noisy environments
• Features integrated undervoltage lockout (UVLO) to prevent improper gate drive states
• Supports wide output supply voltage ranges for compatibility with various power devices

Isolators - Gate Drivers Applications

• Industrial motor drives and inverters
• Switched-mode power supplies (SMPS)
• Automotive power electronics
• Isolated gate driving for IGBTs and MOSFETs

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'GB' against the manufacturer's current product lineup, as datasheet discrepancies exist between this model and the similar SI8275GBD-IM1R. Confirm that the 14-QFN package matches your PCB footprint requirements. Ensure the 2500Vrms isolation rating meets your safety certification standards. Cross-reference the 60ns propagation delay specification with your system timing constraints to guarantee signal integrity.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with robust noise immunity is required. The RF coupling technology offers advantages over traditional capacitive or inductive isolators in terms of size and reliability. Consider the 4A peak current capability for driving medium-power transistors. Evaluate the 14-QFN package for space-constrained designs requiring surface-mount assembly.

Isolators - Gate Drivers Part Context

This part belongs to the Si827x series of isolated gate drivers from Skyworks Solutions. The series is designed for applications demanding high reliability and speed. The SI8275 variant specifically provides dual-channel isolation, making it suitable for half-bridge and full-bridge configurations. The family emphasizes low latency and skew for precise control of power switches.

Isolators - Gate Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify if the SI8275GBD-IM1R serves as a direct pin-compatible alternative, noting potential differences in propagation delay specifications and package variations.