TOP226YN

AC DC Converters, Offline Switchers Overview

The TOP226YN is a three-terminal off-line PWM switch from the TOPSwitch-II family by Power Integrations. It integrates a high-voltage power MOSFET with an integrated controller, oscillator, and protection circuits into a single package. Designed for universal AC input (85-265 VAC), it supports flyback, forward, boost, or buck topologies. The device operates at a switching frequency of 100 kHz and delivers up to 90 W of output power. Key electrical parameters include a 700 V breakdown voltage, 1.4 mA supply current, and operation 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 pulse-width modulation controller in a single package
• Includes built-in auto-restart and current limiting for system-level protection
• Features latching thermal shutdown to prevent damage during overheating events
• Supports multiple converter topologies including flyback, forward, boost, and buck

AC DC Converters, Offline Switchers Applications

• Telecommunications equipment power supplies
• Computer and monitor power adapters
• Consumer audio amplifiers
• General-purpose offline power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific ordering suffix to confirm the package type and lead time requirements. Ensure compatibility with the intended thermal management solution given the TO-220 package. Confirm RoHS compliance status if required for your manufacturing process. Check for any specific handling instructions related to the high-voltage integration.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring a cost-effective, low-component-count solution for power levels up to 90 W. It is suitable for applications where board layout sensitivity must be minimized. Consider the 100 kHz switching frequency for transformer size optimization. Evaluate the need for primary-side regulation versus opto-feedback based on isolation requirements.

AC DC Converters, Offline Switchers Part Context

The TOP226YN belongs to the second-generation TOPSwitch-II family, which offers enhancements over the first generation. This family extends the power range for universal AC inputs, bringing integrated switcher technology to new applications. The design simplifies circuitry by reducing sensitivity to board layout and line transients, thereby accelerating time to market.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct pin-compatible substitutes within the TOPSwitch-II family, such as the TOP224YN or TOP225YN, depending on the required power level. Verify that any replacement maintains the same 700 V rating and switching frequency characteristics.