TOP243FN - Power Integrations

Manufacturer Part Number

TOP243FN

Manufacturer

power-integrations

Introduction

The TOP243FN is a high-performance, offline flyback converter integrated circuit (IC) from Power Integrations. It is part of the TOPSwitch-GX series, designed for high-efficiency, low-cost power supply applications up to 45W. The TOP243FN integrates a 700V power MOSFET, oscillator, control and protection circuitry into a single monolithic device, simplifying power supply design and reducing the component count.

Product Features and Performance

Integrated 700V power MOSFET

Switching frequency range of 66kHz to 132kHz

5% maximum duty cycle

Current limiting, over-temperature and over-voltage protection

Frequency control for reduced EMI

Wide operating temperature range of -40°C to 150°C

Product Advantages

Simplified power supply design with integrated components

High-efficiency performance up to 45W

Robust protection features for reliable operation

Wide temperature range for use in diverse applications

Key Reasons to Choose This Product

Integrated design reduces component count and simplifies power supply development

High-efficiency and wide power range make it suitable for a variety of applications

Reliable operation ensured by comprehensive protection features

Broad temperature range enables use in demanding environments

Quality and Safety Features

Robust 700V power MOSFET for reliable operation

Over-temperature, over-voltage and current limiting protection

Complies with international safety and regulatory standards

Compatibility

The TOP243FN is compatible with a wide range of power supply designs and can be used in various applications, including consumer electronics, industrial equipment, and household appliances.

Application Areas

Consumer electronics (e.g., chargers, adapters)

Industrial equipment (e.g., power tools, automation systems)

Household appliances (e.g., fans, air purifiers)

Product Lifecycle

The TOP243FN is an obsolete product, and Power Integrations no longer manufactures this specific model. However, there are several equivalent and alternative models available in the TOPSwitch-GX series, such as the TOP247, TOP248, and TOP249. Customers are advised to contact our website's sales team for more information on suitable replacement options.