SI8273AB-AS1

Isolators - Gate Drivers Overview

The SI8273AB-AS1 is a single-channel, galvanically isolated gate driver from Skyworks Solutions. It features high common-mode transient immunity and operates with a 2.5 kVrms isolation voltage. The device supports a 5 V undervoltage lockout (UVLO) and provides both high-side and low-side drive capabilities. Key electrical parameters include a maximum propagation delay of 75 ns, a rise time of 16 ns, and a fall time of 18 ns. It is qualified to AEC-Q100 standards for automotive applications and functions within a temperature range of -40 °C to +125 °C.

Isolators - Gate Drivers Feature Summary

• Galvanic isolation with high common-mode transient immunity
• Automotive qualification ensuring reliability in harsh environments
• Integrated high-side and low-side driver outputs

Isolators - Gate Drivers Applications

• Automotive power electronics systems
• Motor control circuits
• Inverter bridge drivers

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix AS1 to confirm the 5 V UVLO threshold and SOIC-16 package configuration. Ensure compatibility with the target system's logic levels and thermal requirements. Cross-reference the AEC-Q100 qualification status if automotive compliance is mandatory for the final assembly.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with robust noise immunity is required in automotive contexts. The single-channel HS/LS configuration simplifies design for half-bridge topologies. Consider the 75 ns propagation delay limit and 1.2 W power dissipation capability against the specific load conditions and PCB thermal layout constraints.

Isolators - Gate Drivers Part Context

This part belongs to the Si8273 series of digital isolators and gate drivers. It utilizes Skyworks' proprietary iCoupler technology for signal transmission across the isolation barrier without optical components. The series offers various channel configurations and UVLO options tailored for different power stage requirements.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same family include SI8273AB-IS1 (3 V UVLO) and SI8273GB-AS1 (3 V UVLO). Verify that the alternative part number matches the required UVLO threshold and pinout compatibility before integration.