SI8285CD-AS

Isolators - Gate Drivers Overview

The SI8285CD-AS is a single-channel automotive-grade digital isolator and gate driver manufactured by Skyworks Solutions. It utilizes capacitive coupling technology to provide galvanic isolation with a rated voltage of 5000Vrms. The device features a peak output current of 4A, supporting high-speed switching for power devices. Key electrical parameters include a maximum propagation delay of 50ns for both low-to-high and high-to-low transitions, with a typical rise time of 5.5ns and fall time of 8.5ns. It offers a minimum common-mode transient immunity of 125kV/µs and operates within a temperature range of -40°C to 125°C.

Isolators - Gate Drivers Feature Summary

• Integrates a high-performance isolated dc-dc converter to eliminate the need for external bias supplies on the secondary side.
• Features an integrated Miller clamp circuit to prevent false turn-on events in SiC and IGBT applications.
• Provides robust signal integrity through high common-mode transient immunity capabilities.

Isolators - Gate Drivers Applications

• Gate driving for Silicon Carbide (SiC) MOSFETs in electric vehicle powertrains
• Isolated control of Insulated Gate Bipolar Transistors (IGBTs) in industrial inverters
• High-frequency switching power supplies requiring galvanic isolation

Isolators - Gate Drivers Procurement Notes

Verify that the specific ordering suffix matches the required package type and thermal characteristics. Confirm AEC-Q100 qualification status if the application demands automotive reliability standards. Ensure the selected variant supports the necessary isolation voltage ratings for the target system design.

Isolators - Gate Drivers Selection Notes

Select this component when a single-channel driver with integrated power conversion is required. Consider the 4A peak current capability for driving medium-power switches. Evaluate the 50ns propagation delay against system timing requirements. Verify compatibility with the 16-SOIC footprint during PCB layout planning.

Isolators - Gate Drivers Part Context

This part belongs to the Si828x family of isolated gate drivers designed for demanding power electronics environments. The series differentiates models based on channel count, output configuration, and integrated features like Miller clamps or split outputs. The SI8285CD-AS specifically targets applications needing a balance of high speed, robust isolation, and simplified power management.

Isolators - Gate Drivers FAQ

Does the SI8285CD-AS include a Miller clamp?

Yes, the datasheet confirms the integration of a Miller clamp feature to suppress noise-induced glitches.

What is the maximum operating temperature?

The device is rated for operation up to 125°C.