AN1842 60W宽电压范围为液晶显示器或电视机电源，使用的L5991

AN1842 60W宽电压范围为液晶显示器或电视机电源，使用的L5991

AN1842
APPLICATION NOTE
60W WIDE-RANGE POWER SUPPLY
FOR LCD MONITOR OR TV, USING THE L5991
by Claudio Spini


This document describes a reference design for a 60W Switch Mode Power Supply dedicated to LCD
TV sets or monitors. The board accepts full range input voltage (90 to 265Vrms) and delivers 5V and
12V. It has good efficiency and very good standby performance, able to meet the most stringent
standby rules.


Introduction
The LCD monitors and TVs are growing very fast, so