SI8285BC-ISR

Isolators - Gate Drivers Overview

The SI8285BC-ISR is a single-channel, inverting, galvanically isolated gate driver from Skyworks Solutions. It utilizes capacitive coupling technology to provide signal and power isolation for driving SiC and IGBT devices. The component features an integrated DC-DC converter, eliminating the need for external isolated power supplies. Key electrical parameters include a peak output current of 4 A, a propagation delay of 50 ns maximum, and rise/fall times of 5.5 ns and 8.5 ns respectively. It operates within a supply voltage range of 10 V to 30 V for the output stage and 2.8 V to 5.5 V for the logic input. The device offers a 3750 Vrms isolation rating and supports a wide operating temperature range from -40°C to +125°C.

Isolators - Gate Drivers Feature Summary

• Integrates a high-efficiency DC-DC converter to generate isolated power, simplifying system design by removing the requirement for separate isolated bias supplies.
• Provides robust galvanic isolation via capacitive coupling technology, ensuring reliable signal transmission across high-voltage potential differences.
• Optimized for fast switching applications with low propagation delay and minimal pulse width distortion, supporting high-frequency operation of wide-bandgap semiconductors.

Isolators - Gate Drivers Applications

• Gate driving for Silicon Carbide (SiC) MOSFETs in high-power inverters
• Isolated control interfaces for Insulated Gate Bipolar Transistors (IGBTs)
• High-frequency DC-DC converter topologies requiring isolated feedback or primary-side control

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'BC' against the manufacturer's latest datasheet to confirm the exact isolation voltage rating and pinout configuration, as variations exist within the family. Ensure the SOIC-16 package dimensions match your PCB footprint requirements. Confirm that the integrated DC-DC converter meets the transient response needs of your specific load profile before finalizing procurement.

Isolators - Gate Drivers Selection Notes

Select this component when a single-channel isolated driver with integrated power generation is required for SiC or IGBT applications. It is suitable for designs prioritizing board space reduction by eliminating external isolated power components. Consider the 4 A peak current capability and 50 ns propagation delay for high-speed switching requirements. Verify compatibility with the control logic voltage levels (2.8 V to 5.5 V) and the target gate drive voltage range (10 V to 30 V).

Isolators - Gate Drivers Part Context

The SI8285BC-ISR belongs to the Skyworks Si828x ISOdriver family, which specializes in capacitive coupling-based isolation solutions. This series is designed to replace traditional magnetic isolators in power electronics. The part is manufactured using CMOS technology and is housed in a standard 16-pin SOIC package, facilitating surface-mount assembly in industrial and automotive power conversion systems.

Isolators - Gate Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the official Skyworks replacement guide or contact technical support for validated cross-references based on specific electrical and mechanical constraints.