公开(公告)号：US20090180302A1

公开(公告)日：2009-07-16

申请号：US12343648

申请日：2008-12-24

申请人： Keita Kawabe ,  Tetsuji Yamashita

发明人： Keita Kawabe ,  Tetsuji Yamashita

IPC分类号： H02M3/335

CPC分类号： H02M3/33523

摘要： A switching power supply apparatus having a highly accurate overvoltage protection function which is free of erroneous operation is provided. A regulating circuit connected to an auxiliary winding generates an AC voltage proportional to a voltage component in which the ringing component has been removed from the AC voltage induced in the auxiliary winding by the switching operation of a switching element. If the peak value of the AC voltage generated by the regulating circuit is equal to or greater than a prescribed value, an overvoltage detection circuit controls the switching operation of the switching element so as to reduce the output DC voltage.

摘要翻译： 提供一种具有高精度的过电压保护功能的开关电源装置，该功能没有错误的操作。 连接到辅助绕组的调节电路通过开关元件的开关操作产生与其中已经从辅助绕组中感应的交流电压中移除振铃部件的电压分量成比例的交流电压。 如果由调节电路产生的交流电压的峰值等于或大于规定值，则过电压检测电路控制开关元件的开关动作，从而降低输出直流电压。

公开(公告)号：US08295062B2

公开(公告)日：2012-10-23

申请号：US12721851

申请日：2010-03-11

申请人： Keita Kawabe ,  Naohiko Morota ,  Kazuhiro Murata

发明人： Keita Kawabe ,  Naohiko Morota ,  Kazuhiro Murata

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0006

摘要： The switching power supply apparatus includes a transformer including a primary winding, a secondary winding, an auxiliary winding, a switching device connected to the primary winding, an output voltage generation circuit which is connected to the secondary winding and generates an output voltage, and an auxiliary power voltage generation circuit which is connected to the auxiliary winding and generates an auxiliary power voltage. The switching power supply apparatus also includes a control circuit, which operates using the auxiliary power voltage and controls a driver circuit so that an intermittent oscillation is performed when the output voltage is higher than a first output voltage, and which controls a peak of a current flowing through a switching device is lower than a peak in a normal mode, when the auxiliary power voltage is lower than a first auxiliary power voltage in the intermittent oscillation.

摘要翻译： 开关电源装置包括：变压器，其包括初级绕组，次级绕组，辅助绕组，连接到初级绕组的开关装置，连接到次级绕组并产生输出电压的输出电压产生电路，以及 辅助电源电压生成电路，其连接到辅助绕组并产生辅助电源电压。 开关电源装置还包括控制电路，其使用辅助电源电压进行操作并控制驱动电路，使得当输出电压高于第一输出电压时进行间歇振荡，并且控制电流的峰值 当辅助电源电压低于间歇振荡中的第一辅助电源电压时，流过开关装置的电流低于正常模式下的峰值。

公开(公告)号：US08159846B2

公开(公告)日：2012-04-17

申请号：US12499308

申请日：2009-07-08

申请人： Keita Kawabe ,  Kazuhiro Murata ,  Yoshihiro Mori ,  Naohiko Morota

发明人： Keita Kawabe ,  Kazuhiro Murata ,  Yoshihiro Mori ,  Naohiko Morota

IPC分类号： H02M7/539

CPC分类号： H02M3/33507 ,  H02M2001/0038

摘要： At the starting time and an overload time in which the output voltage of the switching power source apparatus is low, if an overcurrent state, in which the ON period of the switching device becomes short and a current not less than the current limit value of the switching device flows through the switching device, occurs, this overcurrent state is detected. The blanking period of a blanking pulse signal is made shorter than the blanking period that is obtained during steady operation, and the ON period of the switching device is made shorter. Hence, the device current flowing through the switching device can be made small in each pulse for the switching operation, and, at the same time, the device current is suppressed from increasing each time a pulse for the switching operation is generated.

摘要翻译： 在开始时刻以及开关电源装置的输出电压低的过载时间，如果开关装置的导通期间变短的电流状态和不小于开关电源装置的电流限制值的电流 开关器件流过开关器件，发生该过电流状态。 消隐脉冲信号的消隐周期短于在稳定运行期间获得的消隐周期，并且切换装置的导通周期变短。 因此，在开关动作的每个脉冲中，流过开关装置的器件电流可以变小，并且同时，每当产生用于切换操作的脉冲时，抑制器件电流增加。

公开(公告)号：US20100008106A1

公开(公告)日：2010-01-14

申请号：US12499308

申请日：2009-07-08

申请人： Keita Kawabe ,  Kazuhiro Murata ,  Yoshihiro Mori ,  Naohiko Morota

发明人： Keita Kawabe ,  Kazuhiro Murata ,  Yoshihiro Mori ,  Naohiko Morota

IPC分类号： H02M3/335 ,  H02H7/122 ,  H02M7/44

CPC分类号： H02M3/33507 ,  H02M2001/0038

摘要： At the starting time and an overload time in which the output voltage of the switching power source apparatus is low, if an overcurrent state, in which the ON period of the switching device becomes short and a current not less than the current limit value of the switching device flows through the switching device, occurs, this overcurrent state is detected. The blanking period of a blanking pulse signal is made shorter than the blanking period that is obtained during steady operation, and the ON period of the switching device is made shorter. Hence, the device current flowing through the switching device can be made small in each pulse for the switching operation, and, at the same time, the device current is suppressed from increasing each time a pulse for the switching operation is generated.

摘要翻译： 在开始时刻以及开关电源装置的输出电压低的过载时间，如果开关装置的导通期间变短的电流状态和不小于开关电源装置的电流限制值的电流 开关器件流过开关器件，发生该过电流状态。 消隐脉冲信号的消隐周期短于在稳定运行期间获得的消隐周期，并且切换装置的导通周期变短。 因此，在开关动作的每个脉冲中，流过开关装置的器件电流可以变小，并且同时，每当产生用于切换操作的脉冲时，抑制器件电流增加。