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    • 6. 发明公开
    • Switched mode converter and methods of controlling switched mode converters
    • Getakteter Umrichter und Verfahren zu dessen Steuerung
    • EP2568588A1
    • 2013-03-13
    • EP11180398.7
    • 2011-09-07
    • NXP B.V.
    • Schmid, MarkusKuebrich, Johann BaptistDuerbaum, ThomasHalberstadt, HansHoogzaad, GianPansier, Frans
    • H02M3/335
    • H02M3/33507H02M1/08H02M3/33523H02M2001/0032H02M2001/0035H02M2001/0054H02M2001/0058Y02B70/1491Y02B70/16
    • A method is disclosed of controlling a switched mode converter comprising a switch and for providing power to device having a load, comprising: in response to the load exceeding a first threshold, operating in a first mode, being a CCM; in response to the load exceeding a second threshold and not exceeding the first threshold, operating in second mode, being a BCM without valley skipping wherein the switching frequency increases with decreasing load; in response to the load exceeding a third threshold and not exceeding the second threshold, operating in a third mode, being a BCM with valley skipping, wherein the switching frequency depends on the load and the number of valleys skipped and is between a fixed upper and a lower switching frequency limit; and in response to the load not exceeding the third threshold, operating in a fourth mode, being a BCM with valley skipping, wherein the switching frequency depends on at least the load, and is between an upper and a lower switching frequency limit wherein the upper switching frequency limit decreases with decreasing load.
      A switched mode converter controlled by such a method is also disclosed.
    • 公开了一种控制包括开关并用于向具有负载的装置提供电力的开关模式转换器的方法,包括:响应于所述负载超过第一阈值,以第一模式操作,为CCM; 响应于所述负载超过第二阈值并且不超过所述第一阈值,以第二模式操作,作为不具有谷跳越的BCM,其中所述开关频率随负载减小而增加; 响应于超过第三阈值并且不超过第二阈值的负载,在第三模式中操作,作为具有谷跳跃的BCM,其中开关频率取决于跳过的负载和谷数,并且在固定的上限和 较低的开关频率限制; 并且响应于不超过第三阈值的负载,以第四模式操作,作为具有谷跳跃的BCM,其中开关频率至少取决于负载,并且处于上和下开关频率极限之间,其中上部 开关频率限制随负载减小而减小。 还公开了通过这种方法控制的开关模式转换器。
    • 8. 发明公开
    • Switched mode power supplies and controllers, and a method of controlling a switched mode power supply
    • 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
    • EP2887521A1
    • 2015-06-24
    • EP13199326.3
    • 2013-12-23
    • NXP B.V.
    • Duerbaum, ThomasSchmid, MarkusKuebrich, JohannHalberstadt, HansPansier, Frans
    • H02M3/335H02M1/08
    • H02M3/33592H02M1/08Y02B70/1475
    • 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.
    • 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。