Description

The L6566A is an extremely versatile current-mode primary controller IC specifically designed for high-performance offline flyback converters operated from front-end power factor correction (PFC) stages in applications in compliance with EN61000-3-2 or JEITA-MITI regulations.

Features

■ Selectable multi-mode operation: fixed frequency or quasi-resonant

■ Onboard 700 V high-voltage startup

■ Advanced light load management

■ Low quiescent current (< 3 mA)

■ Adaptive UVLO

■ Line feedforward for constant power capability vs. mains voltage

■ Pulse-by-pulse OCP, shutdown on overload (latched or auto-restart)

■ Transformer saturation detection

■ Switched supply rail for PFC controller

■ Latched or auto-restart OVP

■ Brownout protection

■ -600/+800 mA totem pole gate-driver with active pull-down during UVLO

■ SO16N package

Applications

■ Notebook, TV and LCD monitor adapters

■ High power chargers

■ PDP/LCD TVs

■ Consumer appliances, such as DVD players, VCRs, set-top boxes

■ IT equipment, games, auxiliary power supplies

■ Power supplies in excess of 150 W