公开(公告)号：US20120230063A1

公开(公告)日：2012-09-13

申请号：US13413664

申请日：2012-03-07

申请人： Katsuhiko OKITSU ,  Toshihiro AMEI ,  Kenji HATANO ,  Yoshitaka KIMURA

发明人： Katsuhiko OKITSU ,  Toshihiro AMEI ,  Kenji HATANO ,  Yoshitaka KIMURA

IPC分类号： H02M3/335

CPC分类号： H02M3/338

摘要： There is provided a self-excited switching power supply circuit. A cycle control capacitor is charged with a flyback voltage generated in a feedback winding of a transformer during OFF operation period in which an exciting current does not flow in a primary winding of the transformer. An OFF control capacitor the charging speed of which changes ON operation period is charged with the charging voltage of the cycle control capacitor during the ON operation period in which an exciting current flows in the primary winding. The charging voltage of the cycle control capacitor is changed with a periodic cycle Tc sufficiently longer than an oscillation cycle To to make the oscillation cycle To of continuous oscillating operation variable based on the periodic cycle Tc. As a result, the frequency of a harmonic is distributed.

摘要翻译： 提供了一种自激式开关电源电路。 在变压器的初级绕组中不流过励磁电流的关闭运行期间，在变压器的反馈绕组中产生回扫电压的循环控制电容器。 在励磁电流在初级绕组中流动的接通运行期间，使周期控制电容器的充电电压对其运行周期的充电速度变化的OFF控制电容器进行充电。 周期控制电容器的充电电压以比振荡周期To足够长的周期性循环Tc而改变，以使得基于周期性周期Tc的连续振荡操作的振荡周期To变化。 结果，谐波的频率分布。

公开(公告)号：US20120230061A1

公开(公告)日：2012-09-13

申请号：US13413661

申请日：2012-03-07

申请人： Katsuhiko OKITSU ,  Toshihiro AMEI ,  Kenji HATANO

发明人： Katsuhiko OKITSU ,  Toshihiro AMEI ,  Kenji HATANO

IPC分类号： H02M3/335

CPC分类号： H02M1/36 ,  H02M3/338 ,  H02M2001/0032 ,  Y02B70/16

摘要： There is provided a self-excited switching power supply circuit which shifts to continuous oscillating operation immediately after the self-excited switching power supply circuit is connected to an AC power supply and started and which does not cause start-up failure while using a start-up resistor of a high resistance value to maintain standby power consumption at a low level. A bypass charging circuit connected in series to a start-up resistor is connected between a high-voltage side terminal of a DC input power supply and the gate of an oscillation field effect transistor. A charging current flowing in the start-up resistor, and additionally, a charging current to charge a start-up capacitor through the bypass charging circuit flow in a transitional period during which the voltage of the DC input power supply increases.

摘要翻译： 提供了一种自激式开关电源电路，其在自激式开关电源电路连接到AC电源之后立即转移到连续振荡操作，并且启动，并且在使用启动时，不会引起启动故障， 高电阻值的上拉电阻将待机功耗维持在较低水平。 在直流输入电源的高电压侧端子和振荡场效应晶体管的栅极之间连接有与启动电阻串联连接的旁路充电电路。 在启动电阻器中流动的充电电流，另外，通过旁路充电电路对起动电容器充电的充电电流在直流输入电源的电压增加的过渡期间流动。