TOP256EN

AC DC Converters, Offline Switchers Overview

The TOP256EN is an AC-DC converter from the TopSwitch-HX family, designed for off-line applications. It integrates a high-voltage power switch with a current-mode controller. The device supports a switching frequency of 66 kHz and 132 kHz, with a maximum duty cycle of 83%. It operates within an input voltage range of 85 VAC to 265 VAC. The component provides an output power of 86 W and a rated power of 119 W. It features a breakdown voltage of 700 V and an output current capability of 4.08 A. The unit utilizes an eSIP-7C package with seven pins.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power switch with a current-mode controller for simplified design
• Supports multi-mode operation to maximize efficiency across all load conditions
• Features low thermal impedance junction-to-case for effective heat dissipation
• Includes extended package creepage distance from the DRAIN pin to adjacent pins

AC DC Converters, Offline Switchers Applications

• Universal input adapters
• Monitor power supplies
• Ultra-low height adapter designs
• General-purpose offline converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'EN' corresponds to the eSIP-7C package configuration. Confirm that the required output power aligns with the 86 W specification rather than the higher rated power value. Ensure the application design accounts for the 700 V breakdown voltage rating. Check for RoHS compliance status if environmental regulations apply to the target market.

AC DC Converters, Offline Switchers Selection Notes

Select this component when space constraints require a low-height surface mount solution. The eSIP-7C package is suitable for applications where minimal profile is critical. Consider the integrated controller benefits for reducing external component count. Evaluate the thermal performance requirements against the specified junction-to-case impedance.

AC DC Converters, Offline Switchers Part Context

This part belongs to the TOP256 series within the TopSwitch-HX family. It represents an enhanced version offering advanced features compared to earlier generations. The series focuses on providing high reliability and flexibility for various power supply architectures.

AC DC Converters, Offline Switchers Replacement Considerations

TOP256PN serves as a through-hole alternative in the same family.