SI8274DB4D-IS1

Isolators - Gate Drivers Overview

The SI8274DB4D-IS1 is a single-channel, galvanically isolated gate driver from the Si8274 series by Skyworks Solutions. It features a SOIC-16 surface-mount package and supports high-side/low-side configurations. Key electrical parameters include a maximum propagation delay of 105 ns, rise time of 16 ns, and fall time of 18 ns. The device offers an insulation voltage of 2.5 kVrms and operates within a temperature range of -40°C to +125°C. It delivers a peak output current of 4 mA with a supply voltage up to 30 V. The component is AEC-Q100 qualified for automotive applications.

Isolators - Gate Drivers Feature Summary

• High common-mode transient immunity (CMTI) of 200 kV/μs ensures reliable signal transmission in noisy environments.
• Integrated undervoltage lockout (UVLO) at 8 V prevents improper operation during power-up or brown-out conditions.
• Built-in deglitching circuitry filters out short-duration noise spikes on the PWM input signal.
• Galvanic isolation provides robust protection between control and power sides without magnetic components.

Isolators - Gate Drivers Applications

• Automotive motor control systems requiring AEC-Q100 compliance
• Industrial inverters and converters needing high CMTI
• PWM input isolated drivers for power electronics
• High-speed switching applications with low latency requirements

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'IS1' corresponds to the required UVLO threshold and packaging format. Confirm that the SOIC-16 body width matches your PCB footprint constraints. Ensure the 8 V UVLO level aligns with your system's minimum operating voltage. Check for moisture sensitivity labeling if reflow soldering is planned. Validate AEC-Q100 qualification status against your automotive quality standards.

Isolators - Gate Drivers Selection Notes

Choose this part when high common-mode transient immunity is critical for signal integrity. The integrated deglitching feature simplifies design by reducing external filtering needs. Consider the 4 mA output current capability for driving smaller MOSFETs or IGBTs. The wide operating temperature range suits harsh industrial or automotive environments. Verify compatibility with TTL logic levels for the input interface.

Isolators - Gate Drivers Part Context

The SI8274DB4D-IS1 belongs to the Si8274 family of digital isolators and gate drivers. This series emphasizes high reliability and speed for power conversion applications. Unlike traditional optocouplers, it uses capacitive isolation technology for longer life and better performance. The single-channel configuration allows for flexible integration in half-bridge or standalone switch topologies.

Isolators - Gate Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other Skyworks Si827x variants only if pinout and electrical specifications match exactly. Verify functional equivalence before substitution.