SI8235BD-D-ISR

Isolators - Gate Drivers Overview

The SI8235BD-D-ISR is a dual-channel digital isolator gate driver from Skyworks Solutions, utilizing capacitive coupling technology for galvanic isolation. It features a 5000Vrms isolation voltage and supports output supply voltages between 9.4V and 24V. The device provides peak output currents of 4A with typical rise and fall times of 12ns. Maximum propagation delays are 60ns for both high-to-low and low-to-high transitions, with a maximum pulse width distortion of 5.6ns. It operates within a temperature range of -40°C to 125°C and is housed in a 16-SOIC package.

Isolators - Gate Drivers Feature Summary

• Capacitive coupling technology enables high electromagnetic immunity and reliable signal transmission across the isolation barrier.
• Integrated UVLO (Under-Voltage Lockout) at 8V ensures stable operation by preventing partial turn-on during power-up or brown-out conditions.
• AEC-Q100 qualification confirms automotive-grade reliability and suitability for demanding industrial environments.

Isolators - Gate Drivers Applications

• Motor drive and control systems
• Industrial power management circuits
• Isolated MOSFET and IGBT gate driving

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'D' indicates the correct logic configuration and pinout variant required for your design. Confirm that the 16-SOIC package dimensions match your PCB footprint constraints. Ensure the 5000Vrms isolation rating meets the safety standards applicable to your final equipment certification requirements.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with robust noise immunity is required. The dual-channel architecture allows for independent control of high-side and low-side switches. Consider the 4A peak current capability against the gate charge requirements of the target power devices to ensure adequate drive strength without excessive delay.

Isolators - Gate Drivers Part Context

This part belongs to the Si823x family of isolated gate drivers. The series is characterized by silicon-based isolation technology, offering a compact alternative to traditional magnetic transformers. The family includes variants with different isolation voltages and channel configurations to support diverse power electronics applications.

Isolators - Gate Drivers Replacement Considerations

Check datasheets for other Si823x variants such as SI8233BD-D-ISR for identical electrical specifications but verify package availability. Cross-reference with SI8235BB-D-IS if lower isolation voltage (2.5kV) is acceptable, noting potential differences in UVLO thresholds and propagation delay characteristics.

Isolators - Gate Drivers FAQ

What is the minimum isolation voltage rating?

The SI8235BD-D-ISR has a minimum isolation voltage rating of 5000Vrms.

Does the device include under-voltage lockout?

Yes, it features an integrated UVLO threshold set at 8V to protect against incomplete switching.