TOP225Y

AC DC Converters, Offline Switchers Overview

The TOP225Y 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 into a single TO-220 package. The device operates at a switching frequency of 100 kHz and supports a maximum duty cycle of 70%. It accepts an AC input voltage range of 85 VAC to 265 VAC and delivers a nominal output voltage of 5.7 V. The component has a quiescent supply current of 1.4 mA and functions within a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power MOSFET with a current-mode controller in a single package
• Features built-in auto-restart and current limiting for system protection
• Includes latching thermal shutdown for enhanced safety
• Supports flyback, forward, boost, or buck topologies

AC DC Converters, Offline Switchers Applications

• Universal input offline converters
• Battery chargers
• General-purpose power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'Y' against official documentation to confirm pinout and package details. Confirm RoHS compliance status as records indicate variations between versions. Check the product lifecycle status, as this part may be designated as not recommended for new designs. Ensure the selected variant matches the required thermal and electrical specifications for the target application.

AC DC Converters, Offline Switchers Selection Notes

Select the TOP225Y for applications requiring a cost-effective, low-component-count solution for power levels up to 60W. Consider its integrated features for simplified design and reduced time to market. Evaluate the TO-220 package for through-hole mounting requirements. Compare performance against newer families if higher efficiency or lower profile is needed.

AC DC Converters, Offline Switchers Part Context

The TOP225Y belongs to the TOPSwitch-II family, which provides a complete off-line switcher solution. This series is designed for universal input voltages and offers high efficiency. The family includes variants with different power ratings and feature sets, catering to various industrial and consumer electronics needs.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes within the TOPSwitch-II family such as the TOP224YN or TOP226YN. Verify compatibility regarding pinout, power rating, and control features before substitution.