SI8273BB-IS1R

Isolators - Gate Drivers Overview

The SI8273BB-IS1R is a single-channel, galvanically isolated gate driver from the Si827x series by Skyworks Solutions. It features high common-mode transient immunity (CMTI) of 200 kV/µs and supports latch-up-free operation up to 400 kV/µs. The device provides 2.5 kVrms isolation voltage and includes an 8 V undervoltage lockout (UVLO). It operates within a temperature range of -40°C to +125°C. Key electrical parameters include a maximum propagation delay of 75 ns, rise time of 16 ns, and fall time of 18 ns. The output current capability is 4 mA, with a supply voltage of 12 V.

Isolators - Gate Drivers Feature Summary

• High common-mode transient immunity of 200 kV/µs for robust noise rejection
• Latch-up free performance up to 400 kV/µs ensuring reliable operation in harsh environments
• Galvanic isolation with 2.5 kVrms insulation voltage for safety and signal integrity

Isolators - Gate Drivers Applications

• Industrial motor control systems requiring high noise immunity
• Power supply designs utilizing isolated gate driving
• Automotive electronics compliant with AEC-Q100 standards

Isolators - Gate Drivers Procurement Notes

Verify that the ordering suffix IS1R corresponds to the specific tape and reel packaging configuration required for your assembly line. Confirm that the component meets the necessary AEC-Q100 automotive qualification if deployed in vehicle applications. Ensure input logic levels are compatible with TTL standards as specified in the datasheet. Cross-reference the manufacturer part number with official Skyworks documentation to validate authenticity and revision status before procurement.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with minimal skew is critical alongside strong electromagnetic interference resistance. The single-channel configuration suits applications driving one high-side or low-side switch. Consider the 4 mA output current limit for smaller MOSFETs or IGBTs. The SOIC-16 package offers a compact footprint suitable for dense PCB layouts. Evaluate the 75 ns propagation delay against system timing requirements.

Isolators - Gate Drivers Part Context

This part belongs to the Si827x family of isolated gate drivers, which utilize RF coupling technology for signal transmission across the isolation barrier. Unlike traditional optical isolators, these devices offer superior reliability and longer lifespan. The SI8273 variant specifically provides a single driver channel, distinguishing it from dual-channel counterparts like the SI8274. It is designed for industrial and automotive markets demanding high CMTI.

Isolators - Gate Drivers Replacement Considerations

Public confirmed substitute part numbers: None identified in provided source material.