SI8231AD-D-ISR

Isolators - Gate Drivers Overview

The SI8231AD-D-ISR is a galvanically isolated gate driver from the Si823x series, manufactured by Skyworks Solutions Inc. It features two channels with high-side and low-side configurations in a 16-SOIC package. The device provides 5 kVrms isolation voltage and supports a 5 V UVLO threshold. Key electrical parameters include a maximum propagation delay of 45 ns, rise and fall times of 20 ns each, and an output current capability of 500 mA. It operates within a temperature range of -40°C to +125°C, consumes 3.5 mA of operating supply current, and dissipates up to 1.2 W of power. The component is AEC-Q100 qualified for automotive applications.

Isolators - Gate Drivers Feature Summary

• Provides galvanic isolation via capacitive coupling technology for robust signal transmission.
• Features high electromagnetic immunity suitable for industrial environments.
• Supports both high-side and low-side gate drive configurations.

Isolators - Gate Drivers Applications

• Automotive power electronics systems
• Industrial motor control drives
• Inverter bridge circuits

Isolators - Gate Drivers Procurement Notes

Verify that the specific suffix 'R' denotes the reel packaging variant rather than a functional difference compared to tube-packaged versions like the SI8231AD-D-IS. Confirm that the part number matches the exact datasheet revision required for your design. Ensure compatibility with the intended PCB footprint for the 16-SOIC-Wide package. Check for any recent product change notices affecting manufacturing or specifications.

Isolators - Gate Drivers Selection Notes

Select this component when a 5 kVrms isolation barrier is required for driving IGBTs or MOSFETs in half-bridge topologies. The 5 V UVLO setting distinguishes it from variants with different thresholds. Consider the 500 mA peak output current for driving medium-power switches. The AEC-Q100 qualification makes it appropriate for automotive-grade designs requiring high reliability and wide temperature operation.

Isolators - Gate Drivers Part Context

This device belongs to the Si823x family of isolated gate drivers, which utilize Skyworks' proprietary capacitive coupling technology. This family offers alternatives to traditional magnetic isolators, providing higher integration and lower power consumption. The SI8231AD specifically addresses applications needing dual-channel isolation with defined UVLO characteristics for safe switching operations.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same family include the SI8231BD-D-ISR, which differs primarily in its 8 V UVLO threshold. Other compatible options may include the SI8231AB-D-ISR, though it offers lower 2.5 kVrms isolation. Verify pinout and thermal performance before swapping between these variants.

Isolators - Gate Drivers FAQ

What is the isolation technology used in the SI8231AD-D-ISR?

The device uses capacitive coupling technology to provide galvanic isolation between the input and output sides.

Is the SI8231AD-D-ISR qualified for automotive applications?

Yes, the component is AEC-Q100 qualified, making it suitable for automotive electronic systems.