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2022-09-24 22:26:30
L6565-Quasi-Resonant Switching Power Supply Controller
DESCRIPTION The L6565 is a current mode master controller chip specially designed to build off-line quasi-resonant ZVS (Zero Voltage Switching On Switching) flyback converters. Quasi-resonant operation is a means by which the transformer demagnetization detection input triggers the conduction of the MOSFET.
Changes in the power supply and mains voltage capability of the converter are compensated by line voltage feedforward. At light loads the device has special features that automatically reduce the operating frequency while maintaining operation as close to zero-voltage switching as possible. In addition to very low start-up and quiescent current, this slave feature helps keep power consumption low and Blue Angel meets ENERGY STAR standards at light loads. The IC also includes a disable function, an on-chip filter for current sensing, an accurate reference error amplifier primary voltage regulation and effective two-stage overcurrent protection. ...
Application TV/Monitor switching power supply
AC-DC Adapter/Charger for Digital Consumer Printers, Faxes, Copiers and Scanners