TOP256EN TOPSwitch-HX AC/DC Converter – High-Efficiency Off-Line Switcher IC

Description

The TOP256EN is a high-performance integrated circuit from the TOPSwitch-HX family by Power Integrations, specifically designed for high-efficiency, off-line switch-mode power supplies. By integrating a 700V power MOSFET, high-voltage switched current source, PWM control, and comprehensive fault protection circuitry onto a single monolithic chip, it provides a highly reliable and simplified solution for AC/DC power conversion.

This device is renowned for its energy efficiency and design flexibility, allowing for the creation of compact, cost-effective power supplies that meet stringent international energy standards. Whether you are designing power adapters, industrial auxiliary supplies, or complex consumer electronics, the TOP256EN delivers the stability and performance required for demanding professional applications.

Key Features

• Highly Integrated: Combines the power switch, controller, and protection features in one chip to reduce component count and PCB space.
• Energy Efficient: Features multi-mode control to maintain high efficiency across all load conditions, minimizing energy waste.
• Comprehensive Protection: Includes integrated thermal shutdown, output over-voltage protection, and open-loop fault detection for superior system safety.
• Design Flexibility: Optimized to support a wide range of power supply topologies, including flyback and forward configurations.
• Reliable Performance: Proven architecture from Power Integrations, ensuring long-term operational stability in harsh electrical environments.

Application

• Power Adapters & Chargers: Ideal for high-efficiency universal input power supplies for laptops and consumer electronics.
• Industrial Power Supplies: Provides reliable auxiliary power for automation, robotics, and control systems.
• Consumer Appliances: Perfect for energy-efficient standby and main power rails in smart home devices.
• LED Lighting Drivers: Stable enough to power advanced LED control circuits with high precision.
• Custom Embedded Power: An excellent choice for engineers and hobbyists building professional-grade, custom AC/DC power converters.

Package Includes

• 1 x TOP256EN TOPSwitch-HX AC/DC Converter IC (DIP-7)

Technical Specifications

Note: Product images are shown for illustrative purposes only and may differ from the actual product. For complete technical parameters, please refer to the official device datasheet.