TOP225YN

AC DC Converters, Offline Switchers Overview

The TOP225YN is a three-terminal off-line PWM switch from the TOPSwitch-II family, manufactured by Power Integrations. It integrates a high-voltage power MOSFET with a current-mode controller and protection circuitry into a single TO-220 package. The device supports universal AC input ranging from 85 VAC to 265 VAC. It operates at a switching frequency of 100 kHz with a maximum duty cycle of 70%. The unit delivers up to 100 W of output power and features a low operating supply current of 1.4 mA. It is designed for flyback, forward, boost, or buck topologies.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power MOSFET with a current-mode controller and protection circuitry in a single package
• Supports multiple converter topologies including flyback, forward, boost, and buck configurations
• Includes built-in auto-restart and current limiting mechanisms for system protection
• Features latching thermal shutdown to ensure safety under extreme temperature conditions

AC DC Converters, Offline Switchers Applications

• Universal input AC/DC adapters
• Battery chargers
• General-purpose offline power supplies
• Industrial control systems

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific lot traceability upon receipt. Ensure storage conditions remain within specified limits to maintain device integrity. Cross-reference datasheet revisions to confirm design compatibility. Validate packaging specifications against procurement requirements.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-effective designs requiring integrated switching capabilities. Consider the TO-220 package for applications needing robust thermal dissipation via a heat sink. Evaluate the 100 W power capability against load requirements. Assess the need for primary-side regulation versus opto-feedback isolation. Review thermal management strategies given the junction-to-case characteristics.

AC DC Converters, Offline Switchers Part Context

The TOP225YN belongs to the TOPSwitch-II family, which provides a highly integrated solution for offline power conversion. This series is known for reducing component count and simplifying design processes. The device represents a mature technology platform within Power Integrations' portfolio, offering reliable performance for standard industrial and consumer applications.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official documentation for verified substitute part numbers. Compare pinout compatibility and electrical parameters before substitution. Verify that alternative devices meet the same thermal and voltage specifications.