TOP271EG

The TOP271EG is a highly integrated offline switcher IC (Integrated Circuit) manufactured by Power Integrations. Offline switchers are used in power supply applications where the input power is derived directly from the AC mains voltage, eliminating the need for an intermediate DC-DC conversion stage. The TOP271EG integrates several key functions required for efficient and compact power supply designs.

Key Features:

• Primary Side Regulation (PSR): Implements primary side regulation for voltage control, eliminating the need for an opto-isolator and secondary feedback circuitry, simplifying the design and reducing component count.

• High Efficiency: Features advanced control algorithms and MOSFET switching technology to achieve high efficiency power conversion, reducing power losses and improving overall energy efficiency.

• Integrated MOSFET: Includes an integrated high-voltage MOSFET switch, eliminating the need for an external MOSFET, reducing component count, and saving board space.

• Built-in Protection Features: Provides comprehensive protection features such as overvoltage protection (OVP), overcurrent protection (OCP), over-temperature protection (OTP), and line input undervoltage lockout (UVLO), ensuring safe and reliable operation under various operating conditions.

• Frequency Jittering: Incorporates frequency jittering techniques to reduce electromagnetic interference (EMI) and comply with EMC (Electromagnetic Compatibility) regulations.

• Soft Start: Implements soft start functionality to gradually ramp up the output voltage during startup, reducing inrush current and stress on components.

• Compact Package: Available in compact packages such as eSIP™ and eSIP-7C, enabling high power density and compact designs in power supply applications.

Applications:

• AC-DC Power Supplies: Used in offline AC-DC power supplies for applications such as consumer electronics, LED lighting, industrial automation, and telecommunications.

• Adapters and Chargers: Integrated into adapters, chargers, and power bricks for smartphones, laptops, tablets, and other portable electronic devices.

• LED Drivers: Employed in LED driver circuits for driving LEDs in indoor and outdoor lighting applications, including residential, commercial, and automotive lighting.

• Auxiliary Power Supplies: Utilized in auxiliary power supplies for standby power, auxiliary power rails, and bias supplies in various electronic systems and equipment.

• Industrial Power Supplies: Deployed in industrial power supplies for automation equipment, motor drives, control systems, and other industrial applications requiring reliable and efficient power conversion.

• Telecommunication Equipment: Integrated into telecommunication equipment such as routers, switches, base stations, and network infrastructure devices for power management and conversion.