SI8271AB-ISR

Isolators - Gate Drivers Overview

The SI8271AB-ISR is a single-channel galvanically isolated gate driver from Skyworks Solutions, designed for high-speed signal transmission with low latency and skew. It features silicon isolation technology providing 2.5 kVRMS insulation voltage and accepts TTL logic inputs within a 2.5 V to 5.5 V supply range. The device operates between -40°C and +125°C, delivering a maximum propagation delay of 75 ns, with rise and fall times of 16 ns and 18 ns respectively. It includes programmable dead time, under-voltage lockout (UVLO), and AEC-Q100 qualification, housed in an SOIC-8 surface-mount package.

Isolators - Gate Drivers Feature Summary

• High common-mode transient immunity (CMTI) for reliable operation in noisy environments
• Programmable dead-time control to prevent shoot-through in power switches
• Under-voltage lockout (UVLO) mechanism ensures safe driver operation during power transitions
• AEC-Q100 qualified for automotive-grade reliability standards

Isolators - Gate Drivers Applications

• Switch-mode power supplies (SMPS)
• Solar inverters
• Motor control systems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ISR' corresponds to the reel packaging format rather than tube, as indicated by distributor specifications. Confirm that the AEC-Q100 qualification meets the required automotive grade for your application. Ensure input voltage levels remain within the 2.5 V to 5.5 V range to avoid UVLO activation or damage. Check for moisture sensitivity labeling if storage conditions exceed specified limits before reflow soldering.

Isolators - Gate Drivers Selection Notes

Select this component when a single-channel isolated driver with high CMTI and programmable dead time is required. It is suitable for applications needing fast switching speeds with minimal skew. Consider the SOIC-8 package for space-constrained designs. Compare against other Si8271 variants if different insulation voltages or packaging options are needed. Ensure thermal dissipation requirements align with the 1.1 W power dissipation rating.

Isolators - Gate Drivers Part Context

The SI8271AB-ISR belongs to the Si8271 series of isolated gate drivers from Skyworks Solutions. This family utilizes silicon-based isolation technology, offering advantages over traditional optical couplers such as higher speed, better temperature stability, and integrated features like programmable dead time. The series supports various insulation voltages and packaging configurations to suit diverse industrial and automotive applications.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same series include SI8271AB-IS (tube package) and SI8271DB-ISR (different insulation voltage). Verify pin compatibility and electrical parameters before substitution. Other Skyworks isolated drivers may require circuit adjustments due to differing feature sets or package dimensions.