AN2755 400瓦光纤收发器控制的PFC预调节器的L6562A

AN2755 400瓦光纤收发器控制的PFC预调节器的L6562A

AN2755
Application note

400 W FOT-controlled PFC pre-regulator with the L6562A

Introduction
This application note describes an demonstration board based on the transition-mode PFC
controller L6562A and presents the results of its bench demonstration. The board
implements a 400 W, wide-range mains input PFC pre-conditioner suitable for ATX PSU, flat
screen displays, etc. In order to allow the use of a low-cost device like the L6562A at this
power level, usually prohibitive for this device, the chip is operated with fixed-off-time control.
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