SI8271DB-AS

Isolators - Gate Drivers Overview

The SI8271DB-AS is a single-channel, galvanically isolated gate driver from Skyworks Solutions. It utilizes silicon isolation technology to provide high common-mode transient immunity (CMTI) of 200 kV/μs and latch-up immunity up to 400 kV/μs. The device features a 2.5 kVrms isolation voltage and operates within an input voltage range of 2.5 V to 5.5 V. Key electrical parameters include a maximum propagation delay of 75 ns, rise time of 16 ns, and fall time of 18 ns. It supports a peak output current of 4 A and functions reliably across a temperature range of -40°C to +125°C.

Isolators - Gate Drivers Feature Summary

• High Common-Mode Transient Immunity: Provides robust noise rejection with 200 kV/μs CMTI and 400 kV/μs latch-up immunity.
• Galvanic Isolation: Utilizes silicon-based isolation for reliable signal transmission without direct electrical connection between input and output.
• Automotive Grade Reliability: Designed to meet automotive standards with extended operating temperature ranges and high durability.
• Low Latency Performance: Features fast switching characteristics with minimal propagation delay and skew for precise control.

Isolators - Gate Drivers Applications

• Switch-mode power supplies
• Motor control systems
• Solar inverters

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm tape-and-reel packaging and any unique marking or environmental compliance details. Ensure compatibility with existing PCB footprints and thermal management requirements. Cross-reference the latest datasheet revision for any updates on recommended operating conditions or pin configurations before finalizing procurement.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed isolation with superior noise immunity is required. The 4 A peak drive capability suits medium-power applications. Consider the SOIC-8 package for space-constrained designs. Verify that the 2.5 kVrms isolation rating meets the system's safety requirements. Compare against other Si8271 variants if different UVLO thresholds or output voltages are needed.

Isolators - Gate Drivers Part Context

The SI8271DB-AS belongs to the Si8271 family of isolated gate drivers. This series is characterized by its use of proprietary silicon isolation technology, replacing traditional magnetic or optical coupling methods. The family offers various configurations including single, dual, and half-bridge drivers, catering to diverse industrial and automotive power electronics needs.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same family include SI8271DB-IS or SI8271BBD-AS, depending on required UVLO levels and packaging. Verify pinout compatibility and electrical specifications such as CMTI and drive strength before substitution.

Isolators - Gate Drivers FAQ

What is the common-mode transient immunity (CMTI) of the SI8271DB-AS?

The SI8271DB-AS provides a CMTI of 200 kV/μs and latch-up immunity up to 400 kV/μs.

Does the SI8271DB-AS support automotive applications?

Yes, the Si8271 family is designed for automotive applications, featuring high reliability and operation over extended temperature ranges.