TOP258EN

AC DC Converters, Offline Switchers Overview

The TOP258EN is an AC-DC converter from the TOPSwitch-HX family, integrating a 700 V power MOSFET, high-voltage switching current source, PWM controller, oscillator, thermal shutdown circuit, and fault protection. It operates with a switching frequency of 66 kHz and supports a maximum duty cycle of 78%. The device features EcoSmart technology for low standby/empty-load power consumption and includes locked output overvoltage protection and line undervoltage (UV) lockout. Rated for a maximum operating temperature of 150 °C and minimum of -40 °C, it utilizes an eSIP-7C package with 6 pins.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V power MOSFET with high-voltage switching current source and PWM control
• Features EcoSmart technology for reduced standby and empty-load power consumption
• Includes locked output overvoltage protection and line undervoltage lockout
• Incorporates thermal shutdown circuit and comprehensive fault protection mechanisms

AC DC Converters, Offline Switchers Applications

• Offline switcher applications
• AC-DC converters
• General-purpose power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific package type against official datasheets, as sources indicate variations between DIP-8 and eSIP-7C for similar part numbers. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Ensure the component matches the required pin configuration and thermal specifications for your design.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring integrated offline switching capabilities with high voltage tolerance. Consider the eSIP-7C package for space-constrained applications if verified. Evaluate thermal management requirements given the 150 °C maximum junction temperature rating. Compare against other TOPSwitch-HX variants based on specific power output needs.

AC DC Converters, Offline Switchers Part Context

The TOP258EN belongs to the TOPSwitch-HX series by Power Integrations. This family combines high-voltage MOSFETs with intelligent control circuits in a single monolithic chip. The series is designed for cost-effective, high-reliability power supply solutions with enhanced efficiency and compact form factors suitable for various consumer and industrial electronics.

AC DC Converters, Offline Switchers Replacement Considerations

TOP258PN and TOP258YN are related models within the same family. Verify package compatibility and pinout differences before substitution. Check if alternative packages meet the physical constraints of the target application.