SI8285DC-AS

Isolators - Gate Drivers Overview

The SI8285DC-AS is an automotive-grade, galvanically isolated gate driver from Skyworks Solutions, designed for SiC and IGBT applications. It features a single channel with a peak output current of 4A. The device utilizes capacitive coupling technology to provide 5000Vrms isolation voltage. Key electrical parameters include a minimum common-mode transient immunity (CMTI) of 125kV/µs, maximum propagation delays of 50ns for both low-to-high and high-to-low transitions, and a typical rise time of 5.5ns alongside an 8.5ns fall time. It operates within a supply voltage range of 13.2V to 30V and supports a working temperature range of -40°C to 125°C.

Isolators - Gate Drivers Feature Summary

• Integrated dc-dc converter enables robust operation without external bootstrap circuits
• High-speed capacitive isolation ensures reliable signal transmission in noisy environments
• Built-in Miller clamp functionality prevents false turn-on during high dv/dt events

Isolators - Gate Drivers Applications

• Automotive power electronics systems
• Silicon Carbide (SiC) transistor driving
• Insulated Gate Bipolar Transistor (IGBT) switching control

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'AS' against the manufacturer's official datasheet to confirm it matches the required automotive qualification and package type. Ensure that the ordering information aligns with the exact part number designation to avoid receiving non-automotive or different package variants. Cross-reference the component marking with the official documentation to guarantee authenticity and correct revision level before finalizing procurement decisions.

Isolators - Gate Drivers Selection Notes

Select this component when designing high-reliability automotive inverters requiring integrated isolation power. The built-in dc-dc converter simplifies board layout by eliminating the need for separate isolated power supplies. Its high CMTI rating makes it suitable for fast-switching wide-bandgap devices like SiC MOSFETs where noise immunity is critical for system stability and safety compliance.

Isolators - Gate Drivers Part Context

This part belongs to the Si8285 series of isolated gate drivers. It is specifically engineered for automotive applications, meeting AEC-Q100 standards. The device integrates a dc-dc converter to generate the isolated supply voltage, distinguishing it from standard isolated drivers that require external bootstrap or auxiliary power sources for the high-side drive section.

Isolators - Gate Drivers Replacement Considerations

Consult the official Skyworks Solutions substitution guide for verified alternative part numbers. Do not assume functional compatibility with other series without checking pinout, isolation voltage ratings, and thermal specifications against the original design requirements.