Description
●The L6566B is an extremely versatile current-mode primary controller ICs, specifically designed for high-performance offline flyback converters. It is also suited for single-stage single-switch input-current-shaping converters (single-stage PFC) for applications supposed to comply with EN61000-3-2 or JEITA-MITI regulations.
●Features
●■ Selectable multi-mode operation: fixed frequency or quasi-resonant
●■ On-board 700 V high-voltage start-up
●■ 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 autorestart)
●■ Transformer saturation detection
●■ Programmable frequency modulation for EMI reduction
●■ Latched or autorestart OVP
●■ Brownout protection
●■ -600/+800 mA totem pole gate driver with active pull-down during UVLO
●■ SO16N package
●Applications
●■ Hi-end AC-DC adapter/charger
●■ LCD TV/monitor, PDP
●■ digital consumer, IT equipment
●■ single-stage PFC
