The L6565 is a current-mode primary controller IC,specifically designed to build offline Quasi-resonant ZVS (Zero Voltage
Switching at switch turn-on) flyback converters.Quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers MOSFET's turn-on.

? TV/MONITOR SMPS
? AC-DC ADAPTERS/CHARGERS
? DIGITAL CONSUMER
? PRINTERS, FAX MACHINES,PHOTOCOPIERS AND SCANNERS

? QUASI-RESONANT (QR) ZERO-VOLTAGESWITCHING (ZVS) TOPOLOGY
? LINE FEED FORWARD TO DELIVER CONSTANT POWER vs. MAINS CHANGE
? FREQUENCY FOLDBACK FOR OPTIMUM STANDBY EFFICIENCY
? PULSE-BY-PULSE & HICCUP-MODE OCP
? ULTRA-LOW START-UP (< 70μA) AND QUIESCENT CURRENT (< 3.5mA)
? DISABLE FUNCTION (ON/OFF CONTROL)
? 1% PRECISION (@ Tj = 25°C) INTERNAL REFERENCE VOLTAGE
? ±400mA TOTEM POLE GATE DRIVER WITH UVLO PULL-DOWN
? BLUE ANGEL, ENERGY STAR, ENERGY 2000 COMPLIANT