TOP243Y

AC DC Converters, Offline Switchers Overview

The TOP243YN is an integrated off-line switcher from the TOPSwitch-GX family, designed for AC-DC conversion. It features a 700 V breakdown voltage and supports a maximum output power of 45 W at 230 VAC. The device operates with a switching frequency range of 66 kHz to 132 kHz and includes a wide duty cycle capability up to 83%. It utilizes a TO-220-7 package with through-hole mounting and functions within a temperature range of -40°C to 150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrated soft-start and under-voltage detection for reduced stress
• Externally programmable accurate current limit
• Frequency jittering for EMI reduction
• Hysteretic thermal shutdown for automatic fault recovery

AC DC Converters, Offline Switchers Applications

• LCD monitors
• Personal computers
• Small servers
• Laptop adapters
• Set-top boxes

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'YN' corresponds to the TO-220-7 through-hole package variant. Confirm that the component meets the required isolation and creepage distance standards for the target application. Ensure compatibility with the intended flyback topology and transformer specifications before finalizing procurement orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring extended power ranges up to 45 W without external heatsinks in standard packages. Consider the separate line sense and current limit pins available in the Y package for precise control. Evaluate the EcoSmart technology benefits for applications requiring low consumption in remote off modes.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TOPSwitch-GX family, which offers design flexibility and energy efficiency. The series integrates high-voltage MOSFETs with control circuitry into a single IC. The TOP243 variant specifically targets mid-range power applications, balancing performance with system cost reduction through integrated features.

AC DC Converters, Offline Switchers Replacement Considerations

TOP244YN

AC DC Converters, Offline Switchers FAQ

What is the maximum breakdown voltage of the TOP243YN?

The maximum breakdown voltage is 700 V.

Does the TOP243YN support half-frequency operation?

Yes, the Y package variant supports a half-frequency option (66 kHz) for video applications.