INN4274C-H183-TL

AC DC Converters, Offline Switchers Overview

The INN4274C-H183-TL is an offline flyback AC/DC converter from the InnoSwitch4-CZ series by Power Integrations. It utilizes PowiGaN technology and features a secondary side synchronous rectification topology with quasi-resonant operation. The device operates within a frequency range of 50kHz to 140kHz and is housed in an InSOP-24D package. It supports input voltages of 85-265 VAC and provides up to 85 W of output power.

AC DC Converters, Offline Switchers Feature Summary

• Integrates 750V PowiGaN switch, synchronous rectification, and control logic
• Supports high density flyback designs up to 220 W
• Enables high efficiency constant voltage and constant current power supplies

AC DC Converters, Offline Switchers Applications

• Commercial and industrial lighting
• High density chargers and adapters
• High efficiency USB PD adapters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix H183 against official datasheets to confirm pinout and electrical characteristics match your design requirements. Confirm moisture sensitivity level (MSL) handling procedures are followed during assembly. Ensure the InSOP-24D thermal pad connection is properly managed for heat dissipation in your PCB layout.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring high power density and efficiency in the 85 W range. The integrated synchronous rectification reduces external component count compared to traditional flyback controllers. Consider the InSOP-24D package size constraints when designing the thermal management solution for the target enclosure.

AC DC Converters, Offline Switchers Part Context

This part belongs to the InnoSwitch4-CZ family, which combines primary-side control concepts with secondary-side sensing via auxiliary winding feedback. The PowiGaN technology allows for higher switching frequencies than silicon counterparts, enabling smaller magnetics. This specific model targets mid-power applications where space and efficiency are critical.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct cross-references within the InnoSwitch4-CZ family based on power rating. Verify that any substitute maintains the same InSOP-24D footprint and pin configuration. Ensure the replacement supports the required 85-265 VAC input range and offers comparable efficiency at your specific load points.