公开(公告)号：US06914789B2

公开(公告)日：2005-07-05

申请号：US10742392

申请日：2003-12-22

申请人： Tomoko Kinoshita ,  Yoshihiro Mori

发明人： Tomoko Kinoshita ,  Yoshihiro Mori

IPC分类号： H02M3/28 ,  H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

摘要： A switching power supply apparatus is provided, wherein an optimal blanking interval can be obtained for an entire load range. The switching power supply apparatus is configured such that an on-blanking pulse signal generating circuit 31 generates a blanking pulse signal based on an error voltage signal VEAO, and sets a blanking interval that corresponds to the load condition. For example, the reference voltage and the voltage value of the error voltage signal VEAO are compared and the blanking pulse signal that shortens the blanking interval is generated during a light load, that is, when the voltage value of the error voltage signal VEAO is less than or equal to the reference voltage.

摘要翻译： 提供了一种开关电源装置，其中可以在整个负载范围内获得最佳消隐间隔。 开关电源装置被配置为使得消隐脉冲信号发生电路31基于误差电压信号VEAO产生消隐脉冲信号，并设置与负载条件相对应的消隐间隔。 例如，比较误差电压信号VEAO的参考电压和电压值，并且在轻负载期间产生缩短消隐间隔的消隐脉冲信号，即，当误差电压信号VEAO的电压值较小时 大于或等于参考电压。