SI82391BD-IS3

Isolators - Gate Drivers Overview

The SI82391BD-IS3 is a dual-channel isolated gate driver from the Si8239x series, manufactured by Skyworks Solutions. It features a 3250 Vrms isolation voltage and supports an 8 V Under-Voltage Lock-Out (UVLO). The device operates within a temperature range of -40°C to +125°C and is housed in a 14-pin SOIC-Wide package. Key electrical parameters include a maximum propagation delay of 40 ns, rise and fall times of 12 ns each, and a peak output current of 4 A. It accepts input voltages between 2.5 V and 5.5 V with a typical operating supply current of 7.2 mA. The component is AEC-Q100 qualified for automotive applications.

Isolators - Gate Drivers Feature Summary

• Provides galvanic isolation via silicon technology for high electromagnetic immunity
• Features non-inverting logic configuration for direct signal transmission
• Includes under-voltage lock-out protection to ensure reliable switching

Isolators - Gate Drivers Applications

• Industrial motor control systems
• Automotive power electronics
• High-frequency switching power supplies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix IS3 indicates tube packaging when ordering. Confirm that the 3250 Vrms isolation rating meets system safety requirements. Ensure the SOIC-Wide-14 footprint matches the PCB layout. Check for AEC-Q100 qualification if automotive compliance is mandatory. Validate input voltage ranges against the controller logic levels.

Isolators - Gate Drivers Selection Notes

Select this component for applications requiring robust isolation and fast switching speeds. The 4 A drive capability suits medium-power MOSFETs and IGBTs. Consider the 12 ns transition times for high-frequency efficiency. The wide operating temperature range supports harsh environments. Verify compatibility with the 2.5 V to 5.5 V input logic family.

Isolators - Gate Drivers Part Context

This part belongs to the Si8239x family of isolated gate drivers. It utilizes Skyworks' proprietary silicon capacitor technology for signal transmission. The series offers various channel configurations and isolation ratings. The SI82391BD-IS3 specifically provides dual channels in a standard wide-body package.

Isolators - Gate Drivers Replacement Considerations

Check Skyworks datasheets for other members of the Si8239x family with similar pinouts. Verify if alternative suffixes like AS3 or ASR offer different packaging options. Ensure any substitute maintains the 3250 Vrms isolation and 4 A drive current specifications.