SI8274BB4D-IS1

Isolators - Gate Drivers Overview

The SI8274BB4D-IS1 is a single-channel, galvanically isolated gate driver from the Si8274 series by Skyworks Solutions. It features high common-mode transient immunity and 2.5 kVrms isolation voltage. The device supports PWM input with deglitching functionality and includes under-voltage lockout (UVLO). It operates within an input voltage range of 2.5 V to 5.5 V and delivers an output voltage of 8 V. Key electrical parameters include a maximum propagation delay of 105 ns, rise time of 16 ns, and fall time of 18 ns. The part is qualified to AEC-Q100 standards, functions between -40°C and +125°C, and is housed in a 16-SOIC package.

Isolators - Gate Drivers Feature Summary

• High common-mode transient immunity for robust signal integrity
• Integrated PWM input deglitching capability
• Under-voltage lockout (UVLO) protection mechanism

Isolators - Gate Drivers Applications

• Industrial motor control systems
• Automotive power electronics
• Inverter and converter topologies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix IS1 against the manufacturer's official datasheet to confirm pinout and functional configuration. Ensure the selected variant matches the required UVLO threshold and output voltage level for the target application circuit. Cross-reference the AEC-Q100 qualification status if automotive reliability is mandatory. Confirm moisture sensitivity levels and recommended reflow profiles prior to assembly.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with low latency is required alongside significant isolation barriers. The integrated deglitch filter makes it suitable for noisy environments where PWM signals may contain spurious pulses. Consider the 8 V output drive capability and 4 mA output current against the gate charge requirements of the target power devices. Evaluate thermal performance within the SOIC-16 package for the expected power dissipation.

Isolators - Gate Drivers Part Context

This part belongs to the Si8274 family of digital isolators designed for industrial and automotive applications. It utilizes Skyworks' proprietary silicon isolation technology to provide galvanic separation between control and power stages. The series emphasizes high CMTI and low skew, addressing challenges in high-frequency switching applications where signal fidelity across isolation barriers is critical.

Isolators - Gate Drivers Replacement Considerations

Consult the official Skyworks cross-reference guide for verified substitutes. Direct replacements must maintain identical isolation voltage, channel count, and package dimensions. Verify that alternative drivers support the same UVLO characteristics and deglitching features to ensure circuit compatibility.