L6566BH Datasheet PDF - ST Microelectronics

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