INN4674F-H342-TL

AC DC Converters, Offline Switchers Overview

The INN4674F-H342-TL is an AC/DC converter from the InnoSwitch4-Pro series, utilizing PowiGaN technology. It features a 750 V GaN primary switch and integrated synchronous rectification within an InSOP-T28D package. The device supports flyback topology with a switching frequency of 140 kHz and operates on an input voltage range of 85-265 VAC. It delivers up to 170 W output power with system efficiency exceeding 95%. The component includes I²C digital control, active clamp drive, and internal FluxLink feedback for HIPOT compliance.

AC DC Converters, Offline Switchers Feature Summary

• Integrates 750 V PowiGaN primary switch with active clamp drive and synchronous rectification
• Enables zero-voltage switching in continuous and discontinuous conduction modes
• Provides I²C interface for digital control and telemetry monitoring
• Includes internal FluxLink feedback ensuring HIPOT insulation requirements

AC DC Converters, Offline Switchers Applications

• High-density desktop and laptop adapters
• Monitor and display power supplies
• Consumer electronics chargers requiring digital control
• Industrial equipment power modules

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix H342 against official Power Integrations documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status through manufacturer datasheets. Ensure the InSOP-T28D package matches PCB layout requirements. Validate that the 170 W rating aligns with thermal design constraints for the target application environment.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high power density and digital programmability. The integrated GaN technology reduces passive component size compared to silicon alternatives. Consider the need for I²C communication lines if dynamic voltage adjustment is required. Evaluate thermal management needs, as high efficiency may reduce heat sink requirements but demands proper PCB thermal dissipation strategies.

AC DC Converters, Offline Switchers Part Context

This part belongs to the InnoSwitch4-Pro family, designed for high-performance offline converters. It combines primary-side regulation with secondary-side synchronous rectification. The series targets applications demanding compact form factors and advanced control features. It represents a shift towards fully integrated digital power solutions using wide-bandgap semiconductor technology.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes within the InnoSwitch4-Pro lineup with matching power ratings. Verify compatibility with existing active clamp ICs like ClampZero if ZVS operation is utilized. Ensure replacement parts support the same InSOP-T28D package and I²C interface protocols.