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1. 发明公开

EP2887521A1 Switched mode power supplies and controllers, and a method of controlling a switched mode power supply 审中-公开
标题翻译：开关模式电源和控制系统，以及用于控制开关式电源的方法
公开(公告)号：EP2887521A1
公开(公告)日：2015-06-24
申请号：EP13199326.3
申请日：2013-12-23
申请人： NXP B.V.
发明人： Duerbaum, Thomas , Schmid, Markus , Kuebrich, Johann , Halberstadt, Hans , Pansier, Frans
IPC分类号： H02M3/335 , H02M1/08
CPC分类号： H02M3/33592 , H02M1/08 , Y02B70/1475
摘要： A controller is disclosed for a synchronous rectification switch on a secondary side of a switched mode power supply, the switched mode power supply having a magnetic component having a winding, the controller comprising: an integrator configured to integrate, with respect to time, a voltage across the winding of the magnetic component; a comparator configured to compare the absolute value of the integrated voltage with a threshold value; and a driver configured to drive the control terminal of the synchronous rectification switch, wherein the driver is adapted to open the synchronous rectification switch in response to the absolute value of the integrated voltage falling below the threshold value. A switched mode power supply having such control is also disclosed, as is a method of operating a switched mode power supply using such a controller.
摘要翻译：控制器是圆盘游离缺失一个同步整流开关上的开关模式电源的次级侧，具有具有绕组，所述控制器包括一个磁性部件的开关模式电源：被配置为集成了一个积分器，相对于时间，电压穿过磁性部件的绕组; 用于比较的阈值的积分电压的绝对值的比较器; 和驱动器被配置为驱动所述同步整流开关的控制端子，worin驾驶员angepasst响应于积分电压下降到低于所述阈值的绝对值，打开同步整流开关。经审查的开关模式电源控制gibt游离缺失光盘，由于是使用搜索控制器操作的开关模式电源的方法。

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