SI8238BD-D-ISR

Isolators - Gate Drivers Overview

The SI8238BD-D-ISR is a dual-channel, current-output isolated gate driver manufactured by Skyworks Solutions Inc. It utilizes capacitive coupling technology to provide galvanic isolation with a rated voltage of 5000Vrms. The device features independent high-side and low-side drivers capable of sourcing and sinking peak currents of 4A. It operates within a supply voltage range of 6.5V to 24V for the output stage and includes an 8V undervoltage lockout (UVLO). Key electrical specifications include a maximum propagation delay of 60ns, a common-mode transient immunity of 45kV/µs, and a pulse width distortion of 5.6ns. The component is housed in a 16-SOIC package and is qualified under AEC-Q100 standards for automotive applications.

Isolators - Gate Drivers Feature Summary

• Capacitive coupling technology enables high-speed signal transmission with superior electromagnetic interference immunity compared to optical isolators.
• Dual independent channel architecture supports flexible high-side and low-side switching configurations for power devices.
• Integrated undervoltage lockout protects against incomplete turn-on or turn-off states during low supply conditions.
• High common-mode transient immunity ensures reliable operation in noisy environments with rapid voltage changes.

Isolators - Gate Drivers Applications

• Motor drive and control systems
• Industrial power management circuits
• Inverter topologies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ISR' corresponds to the reel packaging configuration required for your assembly line. Confirm that the 5000Vrms isolation rating meets the safety certification requirements of your target market, such as UL, CSA, or VDE. Ensure the operating temperature range of -40°C to 125°C aligns with your system's thermal design constraints. Cross-reference the AEC-Q100 qualification status if the application mandates automotive-grade reliability standards.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with robust noise immunity is required. The 4A peak current capability suits driving medium-power MOSFETs and IGBTs. Consider the 60ns propagation delay for timing-sensitive applications. The 16-SOIC package offers a compact footprint for dense PCB layouts. Evaluate the 45kV/µs CMTI specification against the dv/dt stress present in your power stage to ensure signal integrity.

Isolators - Gate Drivers Part Context

This part belongs to the Si823x family of isolated gate drivers from Skyworks Solutions. The family leverages silicon-based digital isolation technology to replace traditional optocouplers. These drivers are designed to reduce system cost, size, and power consumption while enhancing long-term reliability. The series includes variants with different current outputs and isolation voltages to cover diverse industrial and automotive needs.

Isolators - Gate Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs before considering alternative components from other manufacturers.