SI8281CD-ISR

Isolators - Gate Drivers Overview

The SI8281CD-ISR is a galvanically isolated gate driver from Skyworks Solutions, designed for SiC and IGBT applications. It features integrated DC-DC conversion, eliminating the need for external isolated power supplies. The device operates within a supply voltage range of 2.8 V to 5.5 V, delivering an output current of 84 mA at 30 V. Key electrical parameters include a maximum propagation delay of 50 ns, with rise and fall times of 5.5 ns and 8.5 ns respectively. It utilizes CMOS logic technology and is housed in a SOIC-20 package, supporting surface-mount installation.

Isolators - Gate Drivers Feature Summary

• Integrates a high-efficiency DC-DC converter to provide isolated power without external components
• Utilizes capacitive coupling technology for robust signal transmission across isolation barriers
• Optimized specifically for driving Silicon Carbide (SiC) and Insulated Gate Bipolar Transistor (IGBT) switches

Isolators - Gate Drivers Applications

• Isolated gate driving for Silicon Carbide (SiC) power modules
• Gate driving for Insulated Gate Bipolar Transistors (IGBTs)
• Inverter circuits requiring high-speed isolated control
• Motor drive systems utilizing wide-bandgap semiconductors

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ISR' corresponds to the reel packaging configuration when ordering. Confirm that the required isolation voltage and thermal performance align with the system's safety standards. Ensure the input logic levels are compatible with the controlling microcontroller or FPGA. Check for any regional compliance certifications required for the target market.

Isolators - Gate Drivers Selection Notes

Select this component when a single-channel isolated driver with integrated power is required for SiC or IGBT applications. Consider the 50 ns propagation delay and 5.5 ns rise time for switching speed requirements. Evaluate the SOIC-20 footprint against available PCB space. Compare against non-integrated drivers if higher peak currents or different isolation ratings are needed.

Isolators - Gate Drivers Part Context

This part belongs to the Si828x ISOdriver family, which focuses on providing compact, high-performance solutions for modern power electronics. The series replaces traditional optocoupler-based designs by offering lower power consumption and smaller form factors. It is positioned as a direct upgrade for industrial inverters and motor drives seeking improved reliability and efficiency.

Isolators - Gate Drivers Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Users should consult official Skyworks Solutions cross-reference guides or datasheets for validated alternatives.