AN2485 400瓦光纤收发器控制的PFC预稳压器³的L6563

AN2485 400瓦光纤收发器控制的PFC预稳压器³的L6563

AN2485
Application note

400 W FOT-controlled PFC pre-regulator with the L6563

Introduction
This application note describes an evaluation board based on the Transition-mode PFC
controller L6563 and presents the results of the bench evaluation. The board implements a
400 W, wide-range mains input, a PFC pre-conditioner suitable for ATX PSU, or a flat
screen display. The chip is operated with Fixed-Off-Time control in order to use a low-cost
device like the L6563 which is usually prohibitive at this power level. Fixed-Off-Time control
a