TOP249YN

AC DC Converters, Offline Switchers Overview

The TOP249YN is a high-performance offline switcher from the TOPSwitch-GX family, designed for AC-DC conversion. It integrates a 700V power MOSFET with a current-mode controller and high-voltage startup circuitry within a single TO-220-7 package. The device operates at a switching frequency of 132 kHz and supports input voltages ranging from 85 VAC to 265 VAC. It delivers up to 180 W of output power with a maximum duty cycle of 83%. The component functions reliably across an operating temperature range of -40°C to 150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700V power MOSFET with a current-mode controller and high-voltage startup circuitry in a single package
• Includes comprehensive protection features such as cycle-by-cycle current limiting, overvoltage protection, and thermal shutdown
• Features frequency jittering to minimize electromagnetic interference (EMI) without requiring external filters

AC DC Converters, Offline Switchers Applications

• PC main power supplies
• Telecommunications equipment
• Consumer electronics adapters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'YN' confirms the TO-220-7 through-hole package variant. Confirm that the part number corresponds to the active TOPSwitch-GX generation rather than obsolete legacy versions. Ensure compliance with RoHS directives if required by the target market regulations.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high power density and minimal external component count. The integrated nature reduces board space compared to discrete solutions. Consider the thermal performance requirements of the TO-220-7 package for heat dissipation in enclosed enclosures.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TOPSwitch-GX family, which represents an evolution of Power Integrations' integrated power supply solutions. The series is known for combining control logic and power switching into a single monolithic chip, simplifying the design of flyback converters for medium-power applications.

AC DC Converters, Offline Switchers Replacement Considerations

• TOP247YN

AC DC Converters, Offline Switchers FAQ

What is the breakdown voltage of the integrated MOSFET?

The integrated power MOSFET has a breakdown voltage of 700 V.

Does the TOP249YN include frequency jittering?

Yes, the device includes frequency jittering functionality to reduce peak EMI emissions.