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31 条记录 (耗时 0.03 秒)

    BRIDGELESS PFC CONVERTER AND THE METHOD THEREOF
    2.
    发明申请
    BRIDGELESS PFC CONVERTER AND THE METHOD THEREOF 审中-公开
    无桥PFC转换器及其方法

    公开(公告)号：US20120293141A1

    公开(公告)日：2012-11-22

    申请号：US13474545

    申请日：2012-05-17

    申请人： Bo Zhang ,  Yuancheng Ren ,  Junming Zhang ,  James C. Moyer ,  Eric Yang

    发明人： Bo Zhang ,  Yuancheng Ren ,  Junming Zhang ,  James C. Moyer ,  Eric Yang

    IPC分类号： G05F1/70

    CPC分类号： H02M1/4233 ,  H02M1/083 ,  H02M2001/0054 ,  Y02B70/126 ,  Y02B70/1491

    摘要： A bridgeless PFC (power factor correction) converter with improved efficiency is disclosed. The bridgeless PFC converter comprises: input terminals configured to receive an input AC power supply; an output terminal configured to provide power supply; a high frequency bridge arm comprising a first switch and a third switch coupled between the output terminal and a ground node; a low frequency bridge arm comprising a second switch and a fourth switch coupled between the output terminal and the ground node; an inductor coupled between the input AC power supply and the high frequency bridge arm; and a control circuit configured to control the switching of switches in the high frequency bridge arm and the low frequency bridge arm.

    摘要翻译： 公开了一种提高效率的无桥PFC（功率因数校正）转换器。 所述无桥PFC转换器包括：被配置为接收输入AC电源的输入端; 输出端子，被配置为提供电源; 高频桥臂，包括耦合在输出端和接地节点之间的第一开关和第三开关; 低频桥臂，包括耦合在所述输出端子和所述接地节点之间的第二开关和第四开关; 耦合在输入交流电源和高频桥臂之间的电感器; 以及控制电路，被配置为控制高频桥臂和低频桥臂中的开关的切换。

    Bridgeless PFC Converter and the Method Thereof
    3.
    发明申请
    Bridgeless PFC Converter and the Method Thereof 有权
    无桥PFC转换器及其方法

    公开(公告)号：US20120139505A1

    公开(公告)日：2012-06-07

    申请号：US13310306

    申请日：2011-12-02

    申请人： Yuancheng Ren ,  Bo Zhang ,  Miao Lei ,  Junming Zhang ,  James C. Moyer ,  Eric Yang

    发明人： Yuancheng Ren ,  Bo Zhang ,  Miao Lei ,  Junming Zhang ,  James C. Moyer ,  Eric Yang

    IPC分类号： G05F1/70

    CPC分类号： H02M1/4225 ,  H02M3/1584 ,  Y02B70/126 ,  Y02P80/112

    摘要： A bridgeless PFC (power factor correction) converter with improved efficiency is disclosed. The bridgeless PFC converter comprises: a first input terminal and a second input terminal configured to receive an input AC signal; an output terminal; an inductor set comprising N inductors, wherein a first terminal of each inductor is coupled to the first input terminal; and an output stage comprising (N+1) switching circuits coupled between the output terminal and a ground node.

    摘要翻译： 公开了一种提高效率的无桥PFC（功率因数校正）转换器。 无桥PFC转换器包括：第一输入端和第二输入端，被配置为接收输入的AC信号; 输出端子; 包括N个电感器的电感器组，其中每个电感器的第一端子耦合到所述第一输入端子; 以及输出级，其包括耦合在输出端子和接地节点之间的（N + 1）个开关电路。

    Tail current control of isolated converter and apparatus thereof
    4.
    发明授权
    Tail current control of isolated converter and apparatus thereof 有权
    隔离变换器的尾电流控制及其装置

    公开(公告)号：US08054655B2

    公开(公告)日：2011-11-08

    申请号：US12264207

    申请日：2008-11-03

    申请人： James C. Moyer ,  Kaiwei Yao ,  Yuxin Li ,  Junming Zhang ,  Huanyu Lu

    发明人： James C. Moyer ,  Kaiwei Yao ,  Yuxin Li ,  Junming Zhang ,  Huanyu Lu

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33592 ,  Y02B70/1475

    摘要： An inventive isolated converter which exempts the auxiliary isolation devices with accurate voltage regulation is disclosed. The converter includes the primary side circuit with a primary controller controlling the on and off of the primary switch and a secondary side circuit with a secondary controller controlling the on and off of the secondary synchronous rectifier. The isolated converter uses the secondary controller to turn on the secondary synchronous rectifier after the secondary current decreases to zero to generate a negative tail current and turns off the secondary synchronous rectifier at a reference tail current peak value to generate a reflected negative current at the primary side circuit for turning on the primary switch.

    摘要翻译： 公开了一种免除具有精确电压调节的辅助隔离装置的本发明的隔离转换器。 转换器包括初级侧电路，其中主控制器控制主开关的导通和关断;以及次级侧电路，其次级控制器控制次同步整流器的导通和关断。 在二次电流下降到零以后，隔离转换器使用次级控制器接通次级同步整流器，以产生负尾电流，并以参考尾电流峰值关断次同步整流器，以在初级电流产生反射负电流 打开主开关的侧面电路。

    Control of multi-string LED array
    5.
    发明授权
    Control of multi-string LED array 有权
    多串LED阵列控制

    公开(公告)号：US08410716B2

    公开(公告)日：2013-04-02

    申请号：US12641212

    申请日：2009-12-17

    申请人： Kaiwei Yao ,  James C. Moyer

    发明人： Kaiwei Yao ,  James C. Moyer

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0827 ,  Y10T307/438

    摘要： Apparatus, systems, and methods related to controlling multiple strings of light emitting diodes (LEDs) are disclosed. An apparatus may include internal current limiter circuits that are each coupled in series with an associated string of LEDs and are configured to at least partially regulate the current through the associated string of LEDs. The apparatus may also be configured to control external current limiter circuits that are each coupled in series with a corresponding internal current limiter circuit and the string of LEDs associated with the corresponding internal current limiter circuit.

    摘要翻译： 公开了与控制多串发光二极管（LED）相关的装置，系统和方法。 装置可以包括内部限流器电路，每个电流限制器电路与相关联的一串LED串联耦合，并且被配置为至少部分地调节通过相关联的LED串的电流。 该装置还可以被配置为控制外部限流器电路，其每个与相应的内部限流器电路和与相应的内部限流器电路相关联的LED串串联耦合。

    CONTROL OF MULTI-STRING LED ARRAY
    6.
    发明申请
    CONTROL OF MULTI-STRING LED ARRAY 有权
    多串LED阵列的控制

    公开(公告)号：US20110148323A1

    公开(公告)日：2011-06-23

    申请号：US12641212

    申请日：2009-12-17

    申请人： Kaiwei Yao ,  James C. Moyer

    发明人： Kaiwei Yao ,  James C. Moyer

    IPC分类号： H05B37/02 ,  H02J4/00

    CPC分类号： H05B33/0827 ,  Y10T307/438

    摘要： Apparatus, systems, and methods related to controlling multiple strings of light emitting diodes (LEDs) are disclosed. An apparatus may include internal current limiter circuits that are each coupled in series with an associated string of LEDs and are configured to at least partially regulate the current through the associated string of LEDs. The apparatus may also be configured to control external current limiter circuits that are each coupled in series with a corresponding internal current limiter circuit and the string of LEDs associated with the corresponding internal current limiter circuit.

    摘要翻译： 公开了与控制多串发光二极管（LED）相关的装置，系统和方法。 装置可以包括内部限流器电路，每个电流限制器电路与相关联的一串LED串联耦合，并且被配置为至少部分地调节通过相关联的LED串的电流。 该装置还可以被配置为控制外部限流器电路，其每个与相应的内部限流器电路和与相应的内部限流器电路相关联的LED串串联耦合。

    Method and circuit for short-circuit and over-current protection in a discharge lamp system
    7.
    发明授权
    Method and circuit for short-circuit and over-current protection in a discharge lamp system 失效
    放电灯系统中短路和过流保护的方法和电路

    公开(公告)号：US07804254B2

    公开(公告)日：2010-09-28

    申请号：US11407599

    申请日：2006-04-19

    申请人： Kaiwei Yao ,  James C. Moyer ,  Wei Chen

    发明人： Kaiwei Yao ,  James C. Moyer ,  Wei Chen

    IPC分类号： H05B37/02 ,  H02H7/122

    CPC分类号： H05B41/2985

    摘要： The method and circuit of the present invention provides short-circuit detection and protection in a discharge lamp system. The transformer's primary current is sensed and used to provide short-circuit protection of the secondary winding side or high voltage side. The system and method with the present invention provides short-circuit detection and protection even when the transformer's secondary winding is shorted.

    摘要翻译： 本发明的方法和电路在放电灯系统中提供短路检测和保护。 变压器的初级电流被感测并用于提供次级绕组侧或高压侧的短路保护。 本发明的系统和方法即使在变压器的次级绕组短路时也提供短路检测和保护。