SI8238AD-D-ISR

Isolators - Gate Drivers Overview

The SI8238AD-D-ISR is a dual-channel galvanically isolated gate driver from the Si823x series, manufactured by Skyworks Solutions. It features capacitive coupling technology for signal transmission across isolation barriers. The device operates with a supply voltage range of 2.7 V to 5.5 V and provides a peak output current of 4 A. It supports an insulation voltage of 5 kVrms and includes a 5 V undervoltage lockout (UVLO). Key electrical parameters include a maximum propagation delay of 45 ns, rise/fall times of 12 ns, and a common-mode transient immunity of 45 kV/µs. It is housed in a 14-pin SOIC-Wide package and is AEC-Q100 qualified.

Isolators - Gate Drivers Feature Summary

• Capacitive coupling technology enables high electromagnetic immunity and reliable signal isolation.
• Dual-channel configuration allows simultaneous control of multiple power switches.
• Integrated undervoltage lockout protects against improper operation during low supply conditions.

Isolators - Gate Drivers Applications

• Industrial motor drives
• Inverter systems
• High-voltage power supplies

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ISR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 14-pin SOIC-Wide package dimensions align with the target PCB footprint. Ensure compatibility with the 5 V UVLO threshold for the intended logic interface levels before finalizing procurement specifications.

Isolators - Gate Drivers Selection Notes

Select this component when high common-mode transient immunity is critical for noise rejection in switching applications. The dual-channel design simplifies board layout for half-bridge or full-bridge topologies. Consider the 4 A peak drive capability for driving medium-power MOSFETs or IGBTs efficiently within the specified temperature range.

Isolators - Gate Drivers Part Context

This part belongs to the Si823x family of isolated gate drivers, which utilize Skyworks' proprietary capacitive isolation technology. The family offers various channel counts and insulation ratings. The SI8238 specifically targets applications requiring robust isolation between control circuitry and high-voltage power stages.

Isolators - Gate Drivers FAQ

What is the common-mode transient immunity rating?

The SI8238AD-D-ISR has a common-mode transient immunity of 45 kV/µs.

Does this device support automotive applications?

Yes, the SI8238AD-D-ISR is AEC-Q100 qualified for automotive use.