Resonant converter control
    3.
    发明授权
    Resonant converter control 有权
    谐振转换器控制

    公开(公告)号:US09119274B2

    公开(公告)日:2015-08-25

    申请号:US14131648

    申请日:2012-07-03

    摘要: The invention relates to methods of controlling operation of a resonant power converter and to controllers configured to operate according to such methods. Embodiments disclosed include a method of controlling a power output of a resonant power converter comprising first and second switches (S1, S2) connected in series between a pair of supply voltage lines, a resonant circuit connected to a node between the first and second switches and to an output connectable to an output electrical load, the resonant circuit comprising an inductor and a capacitor, the method comprising: closing the first switch (S1) to start a first conduction interval; setting a first voltage level (902); setting a first time period; and opening the first switch (S1) to end the first conduction interval when a voltage (901) across the capacitor crosses the first voltage level (902) and when a time period from closing the first switch exceeds the first time period (904).

    摘要翻译: 本发明涉及控制谐振功率转换器的操作的方法以及被配置为根据这些方法操作的控制器。 所公开的实施例包括一种控制谐振功率转换器的功率输出的方法,该谐振功率转换器包括串联在一对电源电压线之间的第一和第二开关(S1,S2),连接到第一和第二开关之间的节点的谐振电路和 到可连接到输出电负载的输出端,所述谐振电路包括电感器和电容器,所述方法包括:闭合所述第一开关(S1)以开始第一导通间隔; 设置第一电压电平(902); 设定第一时间段; 并且当所述电容器两端的电压(901)跨过所述第一电压电平(902)时和当所述第一开关闭合的时间段超过所述第一时间段(904)时,打开所述第一开关(S1)以结束所述第一导通间隔。

    RESONANT CONVERTER CONTROL
    4.
    发明申请
    RESONANT CONVERTER CONTROL 有权
    谐振转换器控制

    公开(公告)号:US20140210370A1

    公开(公告)日:2014-07-31

    申请号:US14131648

    申请日:2012-07-03

    IPC分类号: H05B41/36

    摘要: The invention relates to methods of controlling operation of a resonant power converter and to controllers configured to operate according to such methods. Embodiments disclosed include a method of controlling a power output of a resonant power converter comprising first and second switches (S1, S2) connected in series between a pair of supply voltage lines, a resonant circuit connected to a node between the first and second switches and to an output connectable to an output electrical load, the resonant circuit comprising an inductor and a capacitor, the method comprising: closing the first switch (S1) to start a first conduction interval; setting a first voltage level (902); setting a first time period; and opening the first switch (S1) to end the first conduction interval when a voltage (901) across the capacitor crosses the first voltage level (902) and when a time period from closing the first switch exceeds the first time period (904).

    摘要翻译: 本发明涉及控制谐振功率转换器的操作的方法以及被配置为根据这些方法操作的控制器。 所公开的实施例包括一种控制谐振功率转换器的功率输出的方法,该谐振功率转换器包括串联在一对电源电压线之间的第一和第二开关(S1,S2),连接到第一和第二开关之间的节点的谐振电路和 到可连接到输出电负载的输出端,所述谐振电路包括电感器和电容器,所述方法包括:闭合所述第一开关(S1)以开始第一导通间隔; 设置第一电压电平(902); 设定第一时间段; 并且当所述电容器两端的电压(901)跨过所述第一电压电平(902)时和当所述第一开关闭合的时间段超过所述第一时间段(904)时,打开所述第一开关(S1)以结束所述第一导通间隔。

    Methods of controlling a synchronous rectifier
    5.
    发明授权
    Methods of controlling a synchronous rectifier 有权
    控制同步整流器的方法

    公开(公告)号:US08605465B2

    公开(公告)日:2013-12-10

    申请号:US12960332

    申请日:2010-12-03

    IPC分类号: H02M3/335

    摘要: Consistent with an example embodiment, there is a method of controlling a synchronous rectifier having an input signal having oscillations therein and a switch which is switchable between an open state and a closed state. The method comprises filtering the input signal to produce a filtered signal, comparing the filtered signal with a reference value, and opening the switch in response to the comparison, in which the filtering is active filtering.The active filtering may be based on determination of the peaks (positive and/or negative) of the signal, either directly, including a quarter period offset, or including decay—or a combination of the above; alternatively, the active filtering may be based on the a smoothing functions such as a switched low-pass filter or a short time integrator.

    摘要翻译: 与示例性实施例一致,存在一种控制具有其中具有振荡的输入信号的同步整流器和可在打开状态和闭合状态之间切换的开关的方法。 该方法包括对输入信号进行滤波以产生滤波信号,将滤波信号与参考值进行比较,并响应于比较而打开开关,其中滤波是有源滤波。 有源滤波可以基于直接确定信号的峰值(正和/或负),包括四分之一周期偏移,或包括衰减或上述的组合; 或者,有源滤波可以基于平滑功能,例如开关低通滤波器或短时间积分器。

    Switched mode converter and methods of controlling switched mode converters
    6.
    发明授权
    Switched mode converter and methods of controlling switched mode converters 有权
    开关模式转换器和控制开关模式转换器的方法

    公开(公告)号:US09263955B2

    公开(公告)日:2016-02-16

    申请号:US14342724

    申请日:2012-09-03

    摘要: 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.

    摘要翻译: 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且不超过所述第一阈值,在第二模式下操作,所述BCM不具有谷跳跃,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,以第三模式操作,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 低开关频率限制; 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。

    CIRCUIT FOR A RESONANT CONVERTER
    8.
    发明申请
    CIRCUIT FOR A RESONANT CONVERTER 有权
    谐振转换器电路

    公开(公告)号:US20120127761A1

    公开(公告)日:2012-05-24

    申请号:US13299617

    申请日:2011-11-18

    IPC分类号: H02M3/335

    摘要: A circuit (1202) for a resonant converter (1204; 1326), the resonant converter configured to operate in a burst mode of operation, the circuit configured to: receive a signal (1206; 1308) representative of the output of the resonant converter; compare the received signal (1206; 1308) representative of the output of the resonant converter with a reference signal (1208; 1304) in order to provide an error signal (1310); and process the error signal (1310) in order to provide a control signal (1210; 1328), wherein the control signal (1210; 1328) is configured to set the switching frequency of the resonant converter in order to control the output power during the on-time of a burst of the resonant converter.

    摘要翻译: 一种用于谐振转换器(1204; 1326)的电路(1202),所述谐振转换器被配置为以突发模式操作,所述电路被配置为:接收表示所述谐振转换器的输出的信号(1206; 1308) 将表示谐振转换器的输出的接收信号(1206; 1308)与参考信号(1208; 1304)进行比较,以便提供误差信号(1310); 并处理所述误差信号(1310)以提供控制信号(1210; 1328),其中所述控制信号(1210; 1328)被配置为设置所述谐振转换器的开关频率,以便在所述控制信号 谐振转换器的突发的导通时间。

    Circuit for a resonant converter
    9.
    发明授权
    Circuit for a resonant converter 有权
    谐振转换器电路

    公开(公告)号:US08811040B2

    公开(公告)日:2014-08-19

    申请号:US13299617

    申请日:2011-11-18

    IPC分类号: H02M3/335

    摘要: A circuit (1202) for a resonant converter (1204; 1326), the resonant converter configured to operate in a burst mode of operation, the circuit configured to: receive a signal (1206; 1308) representative of the output of the resonant converter; compare the received signal (1206; 1308) representative of the output of the resonant converter with a reference signal (1208; 1304) in order to provide an error signal (1310); and process the error signal (1310) in order to provide a control signal (1210; 1328), wherein the control signal (1210; 1328) is configured to set the switching frequency of the resonant converter in order to control the output power during the on-time of a burst of the resonant converter.

    摘要翻译: 一种用于谐振转换器(1204; 1326)的电路(1202),所述谐振转换器被配置为以突发模式操作,所述电路被配置为:接收表示所述谐振转换器的输出的信号(1206; 1308) 将表示谐振转换器的输出的接收信号(1206; 1308)与参考信号(1208; 1304)进行比较,以便提供误差信号(1310); 并处理所述误差信号(1310)以提供控制信号(1210; 1328),其中所述控制信号(1210; 1328)被配置为设置所述谐振转换器的开关频率,以便在所述控制信号 谐振转换器的突发的导通时间。

    Surge protection circuit
    10.
    发明授权
    Surge protection circuit 有权
    浪涌保护电路

    公开(公告)号:US09007730B2

    公开(公告)日:2015-04-14

    申请号:US12980554

    申请日:2010-12-29

    IPC分类号: H02H7/00 H02M1/42

    CPC分类号: H02M1/4208 Y02B70/126

    摘要: A surge protection circuit for a circuit having a rectification module. The surge protection circuit includes a first diode, a second diode, a capacitor and a discharge device. The anode of the first diode is connected to a first input of the rectification module, and the anode of the second diode is connected to a second input of the rectification module. The cathodes of the first and second diodes are both connected to the first plate of the capacitor. The second plate of the capacitor is connected to the negative output of the rectification module. The capacitor is configured such that it is consistently charged to substantially the peak value of a supply voltage during normal operation between surge events. The discharge device is connected to the first plate of the capacitor and is configured to discharge the capacitor when the voltage across the capacitor is in excess of the peak of the maximum value of the normal supply voltage and not discharge the capacitor when the voltage across the capacitor is not in excess of the peak of the maximum value of the normal supply voltage.

    摘要翻译: 一种具有整流模块的电路的浪涌保护电路。 浪涌保护电路包括第一二极管,第二二极管,电容器和放电装置。 第一二极管的阳极连接到整流模块的第一输入端,第二二极管的阳极连接到整流模块的第二输入端。 第一和第二二极管的阴极都连接到电容器的第一板。 电容器的第二板连接到整流模块的负极输出端。 电容器被配置为使得其在浪涌事件之间的正常操作期间一直被充电到基本上电源电压的峰值。 放电装置连接到电容器的第一板,并且当电容器两端的电压超过正常电源电压的最大值的峰值时,对电容器进行放电,并且当跨过电容器的电压 电容器不超过正常电源电压最大值的峰值。