Description

The L6566BH is an extremely versatile current-mode primary controller IC, specifically designed for high-performance offline flyback converters running off rectified 3-phase input lines. It is also suited to single-stage, single-switch, input-current-shaping converters (single-stage PFC) for applications that must comply with EN61000-3-2 or JEITA-MITI regulations.

Features

■ Selectable multimode operation: fixed frequency or quasi-resonant

■ On-board 840 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

■ Programmable frequency modulation for EMI reduction

■ Latched or auto-restart OVP

■ Brownout protection

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

■ SO16N package

Applications

■ Industrial SMPS

■ SMPS running off rectified 3-phase input line