SI8273DBD-IS1

Isolators - Gate Drivers Overview

The SI8273DBD-IS1 is a single-channel current-isolated gate driver from Skyworks Solutions, designed for high-speed switching applications. It features a SOIC-16 surface-mount package and operates within a temperature range of -40°C to +125°C. The device provides an isolation voltage of 2.5 kVrms and supports input voltages between 2.5 V and 5.5 V. Key electrical parameters include a maximum propagation delay of 75 ns, rise time of 16 ns, and fall time of 18 ns. It delivers a peak output current of 4 mA at 12 V, with a typical operating supply current of 10 mA. The component is AEC-Q100 qualified and configured for both high-side and low-side driving.

Isolators - Gate Drivers Feature Summary

• Utilizes silicon-based digital isolation technology to achieve high common-mode transient immunity (CMTI) and robust signal integrity in electrically noisy environments.
• Integrates programmable dead-time control and under-voltage lockout (UVLO) mechanisms to prevent shoot-through currents and ensure safe switching operations.
• Supports flexible logic input compatibility with TTL levels, enabling direct interfacing with various microcontrollers and PWM controllers without additional level shifting.

Isolators - Gate Drivers Applications

• Switching mode power supplies (SMPS)
• Solar inverters
• Motor control systems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'IS1' against the official Skyworks datasheet to confirm pinout and functional configuration, as ordering suffixes may indicate variations in packaging or qualification status. Ensure the procurement channel provides valid RoHS compliance documentation and AEC-Q100 automotive qualification certificates if required for the target application. Cross-reference the SOIC-16 footprint dimensions with the manufacturer's mechanical drawing to guarantee PCB layout compatibility.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed isolation with low latency is critical for power stage control. The 4 mA output current is suitable for driving small-to-medium MOSFETs or IGBTs directly; however, larger devices may require external buffer stages. Consider the 2.5 kVrms isolation barrier for primary-secondary separation requirements. The wide operating temperature range makes it suitable for industrial and automotive environments where thermal stability is essential for consistent performance.

Isolators - Gate Drivers Part Context

The SI8273DBD-IS1 belongs to the Si827x family of isolated gate drivers, which leverage Skyworks' proprietary silicon isolation technology. This family replaces traditional magnetic and optical isolators, offering superior reliability and smaller form factors. The part is often evaluated alongside other members like the SI8271 and SI8275 series for different channel configurations and drive strengths within the same ecosystem.

Isolators - Gate Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Skyworks Solutions for cross-reference recommendations based on specific electrical and mechanical constraints.

Isolators - Gate Drivers FAQ

What is the maximum propagation delay for the SI8273DBD-IS1?

The maximum propagation delay is specified as 75 ns.

Is the SI8273DBD-IS1 qualified for automotive applications?

Yes, the component is AEC-Q100 qualified.