TOP254GN

AC DC Converters, Offline Switchers Overview

The TOP254GN is an integrated offline switcher from the TOPSwitch-HX family, designed for flyback converters. It incorporates a 700 V power MOSFET, high-voltage switching current source, PWM controller, oscillator, thermal shutdown circuit, and fault protection logic within a single monolithic device. The component supports dual switching frequencies of 66 kHz and 132 kHz to optimize efficiency and EMI performance. It features a maximum duty cycle of 78% and operates across a junction temperature range of -40 °C to +150 °C.

AC DC Converters, Offline Switchers Feature Summary

• Integrated EcoSmart architecture enables low standby and no-load power consumption.
• Frequency dithering capability reduces electromagnetic interference (EMI).
• Programmable output overvoltage protection allows user-selectable latching or non-latching shutdown modes.
• Line undervoltage detection prevents turn-off glitches during input voltage fluctuations.

AC DC Converters, Offline Switchers Applications

• Universal input AC-DC adapters
• Low-power consumer electronics power supplies
• Battery chargers
• General-purpose offline power conversion

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix against official Power Integrations documentation to confirm package type and tape/reel specifications. Ensure the ordering part number matches the required moisture sensitivity level and packaging format. Cross-reference the manufacturer's latest datasheet to confirm active status and compliance with current environmental standards before finalizing procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring a compact, highly integrated solution for low-to-medium power applications. The TOPSwitch-HX family offers design flexibility through multi-mode operation that maximizes efficiency across all load ranges. Consider the thermal impedance and package height when designing for space-constrained enclosures such as slim adapters.

AC DC Converters, Offline Switchers Part Context

This device belongs to the TOPSwitch-HX family, which provides enhanced EcoSmart technology and an advanced feature set with an extended power range. The family utilizes new eSIP packages to offer low thermal impedance and reduced physical height, facilitating simple mounting and cost-effective manufacturing processes for modern power supply designs.

AC DC Converters, Offline Switchers Replacement Considerations

TOP254GN-TL serves as a verified alternative variant within the same series, offering identical electrical characteristics in a tape-and-reel package configuration suitable for automated surface-mount assembly.