SI88642BC-AS

Isolators - Gate Drivers Overview

The SI88642BC-AS is a unidirectional digital isolator from the Si88642 series, manufactured by Skyworks Solutions Inc. It features four channels with a data rate of 100 Mb/s and an insulation voltage of 5000 Vrms using capacitive coupling. The device operates on a supply voltage between 3 V and 5.5 V, drawing a typical operating current of 10.8 mA. Key timing parameters include a propagation delay of 18 ns, rise/fall times of 25 ns, and a pulse width distortion of 4.5 ns. It supports a shutdown function and functions within a temperature range of -40°C to +125°C in an SOIC-24 package.

Isolators - Gate Drivers Feature Summary

• Integrates four unidirectional signal channels with high-speed data transmission capabilities.
• Provides robust electrical isolation via capacitive coupling technology.
• Includes an integrated DC-DC converter for independent power domain operation.
• Features a shutdown mode to reduce power consumption when not in use.

Isolators - Gate Drivers Applications

• Industrial automation control systems
• Power electronics gate driving interfaces
• Medical equipment signal isolation
• Automotive electronic subsystems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'BC' against official Skyworks documentation to confirm insulation voltage ratings and feature sets, as variations exist within the family. Ensure compatibility with SOIC-24 footprint requirements during procurement. Cross-reference the manufacturer part number directly with authorized distributors to avoid counterfeit components. Confirm that the selected variant meets the required thermal and electrical specifications for the target application environment before finalizing orders.

Isolators - Gate Drivers Selection Notes

Select this component when high-voltage isolation of 5000 Vrms is required alongside four-channel unidirectional signal transmission. The integrated DC-DC converter simplifies design by eliminating external isolated power supplies. Consider the 100 Mb/s data rate and 18 ns propagation delay for timing-sensitive applications. Evaluate the SOIC-24 package size against board space constraints. Verify that the operating temperature range of -40°C to +125°C aligns with environmental conditions.

Isolators - Gate Drivers Part Context

The SI88642BC-AS belongs to the Si88642 family of digital isolators, which are designed for robust signal transmission across isolation barriers. This series utilizes Skyworks' proprietary capacitive coupling technology to provide reliable performance in noisy environments. The family includes various channel counts and insulation ratings, with the BC variant specifically offering higher insulation voltage compared to other members like the EC series.

Isolators - Gate Drivers Replacement Considerations

SI88642EC-AS offers similar functionality but with a lower insulation voltage rating of 3750 Vrms instead of 5000 Vrms. Both devices share the same SOIC-24 package and basic interface characteristics. Designers must verify if the reduced insulation rating of the EC-AS variant is sufficient for their specific safety requirements before substituting.