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
