公开(公告)号：US20120146986A1

公开(公告)日：2012-06-14

申请号：US13217309

申请日：2011-08-25

申请人： Takayuki OUCHI ,  Minoru Moteki ,  Akihiko Kanouda

发明人： Takayuki OUCHI ,  Minoru Moteki ,  Akihiko Kanouda

IPC分类号： G09G5/00 ,  H02M3/335

CPC分类号： H02M1/4258 ,  H02M1/36 ,  H02M3/33569 ,  H02M2001/0058 ,  H02M2001/0096 ,  Y02B70/126 ,  Y02B70/1491

摘要： A switching power supply has a function of improving a power factor, and outputs insulated DC. The switching power supply performs two kinds of controls for switching devices exclusive to each other: controlling of a switching device provided in a direction in which the discharging of a primary-side smoothing capacitor is prohibited at the time of suspension of commercially available AC power and near the zero cross of an input voltage; and causing a switching device provided between the output side of a third winding and the primary-side smoothing capacitor to control a charging current, thereby charging a capacitor in a boosted manner.

摘要翻译： 开关电源具有提高功率因数的功能，并输出绝缘DC。 开关电源执行用于彼此专用的开关装置的两种控制：在暂停市售AC电力时禁止初级侧平滑电容器的放电方向设置的开关装置的控制，以及 靠近输入电压的零交叉; 并且使得设置在第三绕组的输出侧和初级侧平滑电容器之间的开关装置来控制充电电流，从而以增强的方式对电容器充电。