SI82398BD-ISR

Isolators - Gate Drivers Overview

The SI82398BD-ISR is a dual-channel isolated gate driver from the Si8239x series, manufactured by Skyworks Solutions. It features a wide-body SOIC-16 package for high creepage and clearance distances. The device provides galvanic isolation via capacitive coupling with a rated insulation voltage of 5000 Vrms. It operates within an extended temperature range of -40°C to +125°C and supports input voltages between 2.5 V and 5.5 V. Key electrical parameters include a maximum propagation delay of 40 ns, rise and fall times of 12 ns, and a peak output current capability of 4 A. The unit draws a typical operating supply current of 7.3 mA and includes an 8 V undervoltage lockout (UVLO) feature.

Isolators - Gate Drivers Feature Summary

• Provides robust galvanic isolation using advanced capacitive coupling technology to protect low-voltage control circuits from high-voltage switching nodes.
• Delivers high peak drive current to efficiently switch power MOSFETs and IGBTs in demanding power conversion environments.
• Ensures signal integrity through high common-mode transient immunity, maintaining reliable operation in electrically noisy industrial settings.

Isolators - Gate Drivers Applications

• Automotive motor drives and inverters
• Industrial motor control systems
• High-frequency DC-DC converters

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ISR' indicates tape-and-reel packaging when sourcing components. Confirm that the 5 kV insulation rating aligns with your system's safety isolation requirements. Ensure the SOIC-Wide-16 footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.

Isolators - Gate Drivers Selection Notes

Select this component for applications requiring high-speed switching with strong noise immunity. The dual-channel configuration allows for half-bridge or full-bridge topologies. Consider the 8 V UVLO threshold to ensure proper gate drive activation under varying supply conditions. The wide-body package facilitates thermal management and high-voltage spacing.

Isolators - Gate Drivers Part Context

This part belongs to the Si8239x family of isolated gate drivers, which are designed to replace traditional transformer-based solutions. The family offers various channel counts and insulation ratings to suit different power electronics designs. The SI82398BD-ISR specifically targets automotive and industrial markets requiring AEC-Q100 qualification and high reliability.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same family include SI82398BD-IS and SI82398BD4-IS. Verify pin compatibility and insulation voltage ratings before substitution. Alternative packages such as SOIC-14 may require schematic and layout modifications.