L6565 Datasheet (STMicroelectronics) - QUASI-RESONANT SMPS CONTROLLER

L6565, QUASI-RESONANT SMPS CONTROLLER

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 demag

L6565 QUASI-RESONANT SMPS CONTROLLER s QUASI-RESONANT (QR) ZERO-VOLTAGESWITCHING (ZVS) TOPOLOGY s LINE FEED FORWARD TO DELIVER CONSTANT POWER vs.

MAINS CHANGE s FREQUENCY FOLDBACK FOR OPTIMUM STANDBY EFFICIENCY s PULSE-BY-PULSE & HICCUP-MODE OCP s ULTRA-LOW START-UP (< 70µA) AND QUIESCENT CURRENT (< 3.5mA) s DISABLE FUNCTION (ON/OFF CONTROL) s 1% PRECISION (@ Tj = 25°C) INTERNAL REFERENCE VOLTAGE s ±400mA TOTEM POLE GATE DRIVER WITH UVLO PULL-DOWN s BLUE ANGEL, ENERGY STAR, ENERGY 2000 COMPLIA