SI82391AB-IS1

Isolators - Gate Drivers Overview

The SI82391AB-IS1 is a dual-channel, galvanically isolated gate driver from Skyworks Solutions. It features capacitive coupling technology for signal transmission across the isolation barrier. The device provides 2500 Vrms isolation voltage and includes a 6 V undervoltage lockout (UVLO). It operates within a supply voltage range of 3 V to 5.5 V and supports output currents up to 4 A. Key electrical parameters include a maximum propagation delay of 40 ns, with rise and fall times of 12 ns each. It is qualified under AEC-Q100 standards and functions in temperatures from -40°C to +125°C.

Isolators - Gate Drivers Feature Summary

• Capacitive coupling architecture ensures high electromagnetic immunity and reliable signal isolation.
• Dual-channel configuration allows independent control of high-side and low-side switches.
• Integrated undervoltage lockout protects against improper operation during power-up or fault conditions.

Isolators - Gate Drivers Applications

• Industrial motor drives requiring robust isolation
• Inverter systems in renewable energy applications
• High-frequency switching power supplies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix IS1 corresponds to the tape-and-reel packaging format when ordering. Confirm that the 6 V UVLO threshold aligns with the target gate drive requirements. Ensure compatibility with the SOIC-Narrow-16 package dimensions for PCB layout. Check for AEC-Q100 qualification if automotive compliance is mandatory for the end application.

Isolators - Gate Drivers Selection Notes

Select this component when a dual-channel isolated driver with 2500 Vrms isolation is required. The 4 A peak output current suits medium-power MOSFET or IGBT driving. Consider the 6 V UVLO if lower gate drive voltages are used. Compare against other Si8239x variants if higher isolation ratings or different UVLO thresholds are needed.

Isolators - Gate Drivers Part Context

This part belongs to the Si8239x family of isolated gate drivers. These devices utilize Skyworks' proprietary capacitive isolation technology. The family offers various isolation ratings and UVLO options. The SI82391AB-IS1 specifically targets applications needing dual-channel control with moderate isolation and standard UVLO settings.

Isolators - Gate Drivers Replacement Considerations

Check SI82391BB-IS1 for identical performance but with 8 V UVLO. Verify SI82391CD-IS for wide-body SOIC packaging if thermal or creepage requirements differ. Ensure pinout compatibility before substituting any variant within the Si8239x series.