单端反激开关稳压电源设计与制作
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摘要
针对离线式结构开关电源的缺点,利用反激变换器的优点,基于UC3844设计了单端反激开关稳压电源。同时,配合可调式精密三端稳压器TL431和光耦FL817构成反馈回路,在单相交流输入220 V±15%的输入条件下,实现直流电压12 V和电流2.5 A的输出,且具有良好的稳压效果。
In view of the shortcomings of off-line switching power supply,a single-ended flyback switching power supply is designed based on UC3844,taking advantage of the advantages of flyback converter. At the same time,with adjustable precision three-terminal regulator TL431 and optocoupler FL817,the feedback loop can realize the output of DC voltage 12 V and current 2.5 A under the input condition of single-phase AC input 220 V±15%,and has good voltage stabilization effect.
In view of the shortcomings of off-line switching power supply,a single-ended flyback switching power supply is designed based on UC3844,taking advantage of the advantages of flyback converter. At the same time,with adjustable precision three-terminal regulator TL431 and optocoupler FL817,the feedback loop can realize the output of DC voltage 12 V and current 2.5 A under the input condition of single-phase AC input 220 V±15%,and has good voltage stabilization effect.
引文
[1]杨永清.基于UC3844的单端反激开关电源设计[J].移动电源与车辆,2009,(4):1-3.
[2]梅彦平,马瑞卿.单片机用单端反激式隔离开关稳压电源的设计[J].计测技术,2005,(3):24-27.
[3]吴勇军,刘政波,杨旭.一种新颖的单端反激式隔离开关稳压电源的设计及应用[J].电源技术应用,2001,4(3):71-73.
[4]高曾辉,于相旭.单端反激式高频高压开关稳压电源[J]重庆大学学报(自然科学版),2000,(5):29-31.
[5]宋凯,杨振强,宋凌锋,等.实用单端反激式隔离开关稳压电源的设计[J].微特电机,1998,(6):14-15
[6]金树福,夏雨人.单端反激PWM开关稳压电源[J].上海交通大学学报,1996,(6):130-134.
[2]梅彦平,马瑞卿.单片机用单端反激式隔离开关稳压电源的设计[J].计测技术,2005,(3):24-27.
[3]吴勇军,刘政波,杨旭.一种新颖的单端反激式隔离开关稳压电源的设计及应用[J].电源技术应用,2001,4(3):71-73.
[4]高曾辉,于相旭.单端反激式高频高压开关稳压电源[J]重庆大学学报(自然科学版),2000,(5):29-31.
[5]宋凯,杨振强,宋凌锋,等.实用单端反激式隔离开关稳压电源的设计[J].微特电机,1998,(6):14-15
[6]金树福,夏雨人.单端反激PWM开关稳压电源[J].上海交通大学学报,1996,(6):130-134.