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12 条记录 (耗时 0.02 秒)

    Planar transformer and output inductor structure with single planar winding board and two magnetic cores
    6.
    发明授权
    Planar transformer and output inductor structure with single planar winding board and two magnetic cores 有权
    平面变压器和输出电感器结构，具有单平面绕组板和两个磁芯

    公开(公告)号：US06927661B2

    公开(公告)日：2005-08-09

    申请号：US10428963

    申请日：2003-05-02

    申请人： Jin He ,  Michael Duane Lawrence ,  Gordon K. Y. Lee ,  Victor Ke-Ji Lee ,  Donald Bruce Rose

    发明人： Jin He ,  Michael Duane Lawrence ,  Gordon K. Y. Lee ,  Victor Ke-Ji Lee ,  Donald Bruce Rose

    IPC分类号： H01F21/12 ,  H01F27/28 ,  H01F27/38 ,  H01F5/00

    CPC分类号： H01F27/2804 ,  H01F21/12 ,  H01F27/38 ,  H02M2001/0064 ,  Y10T29/4902

    摘要： The magnetic device consists of a planar winding board, which contains the windings for both the inductor and the transformer. Thus, this invention centers on integrating the windings of multiple magnetic devices, not integrating the cores. By connecting the transformer secondary winding directly to the output inductor winding without using any intermediate headers and/or termination pins or conductive copper traces, both electrical path and the termination resistance will be minimized. Furthermore, the number of headers or termination pins required will also be reduced, which helps to not only alleviate the issue associated with co-planarity of the termination pins, but also reduce the cost of the material and manufacturing.

    摘要翻译： 磁性装置由平面绕组板组成，其中包含用于电感器和变压器的绕组。 因此，本发明的重点是集成多个磁性装置的绕组，而不是集成磁芯。 通过将变压器次级绕组直接连接到输出电感器绕组，而不使用任何中间接头和/或端接引脚或导电铜迹线，电气路径和终端电阻将最小化。 此外，所需的头部或终端销的数量也将减少，这有助于不仅减轻与终端销的共面性相关的问题，而且还降低了材料和制造的成本。

    Snubber circuit for a rectifier and method of operation thereof
    7.
    发明授权
    Snubber circuit for a rectifier and method of operation thereof 失效
    整流器缓冲电路及其工作方法

    公开(公告)号：US5877947A

    公开(公告)日：1999-03-02

    申请号：US903407

    申请日：1997-07-30

    申请人： Qing Chen ,  Victor Ke-Ji Lee

    发明人： Qing Chen ,  Victor Ke-Ji Lee

    IPC分类号： H02M1/34 ,  H02M3/335 ,  H03K17/0814 ,  H02H7/125 ,  H02H7/122 ,  H02M7/5387

    CPC分类号： H02M1/34 ,  H02M3/33576 ,  H03K17/08142 ,  H02M2001/342 ,  Y02B70/1491

    摘要： For use in a power converter having a rectifier coupled to an output thereof, a snubber circuit including an energy storage device coupled to the rectifier that moderates a voltage across the rectifier and a method of moderating the voltage. In one embodiment, the snubber circuit includes: (1) a first switch that regulates a voltage across the energy storage device, (2) an inductor, coupled to the first switch, that provides a discharge path for energy stored in the energy storage device when the first switch is conducting and (3) a second switch that recovers energy stored in the inductor to the output when the first switch is not conducting. The snubber circuit thereby reduces voltage stress across the rectifier during a current limit mode of operation.

    摘要翻译： 为了用于具有耦合到其输出的整流器的功率转换器，缓冲电路包括耦合到整流器的能量存储装置，其缓和整流器两端的电压和调节电压的方法。 在一个实施例中，缓冲电路包括：（1）调节跨越能量存储装置的电压的第一开关，（2）耦合到第一开关的电感器，其提供存储在能量存储装置中的能量的放电路径 当第一开关导通时，以及（3）第二开关，其在第一开关不导通时将存储在电感器中的能量恢复到输出端。 因此，缓冲电路在电流限制操作模式期间减小整流器两端的电压应力。

    Highly efficient, tightly regulated DC-to-DC converter
    8.
    发明授权
    Highly efficient, tightly regulated DC-to-DC converter 有权
    高效，紧密调节的DC-DC转换器

    公开(公告)号：US06728118B1

    公开(公告)日：2004-04-27

    申请号：US10293722

    申请日：2002-11-13

    申请人： Qing Chen ,  Victor Ke-Ji Lee

    发明人： Qing Chen ,  Victor Ke-Ji Lee

    IPC分类号： H02M3335

    CPC分类号： H02M3/33592 ,  H02M2001/007 ,  H02M2001/009 ,  Y02B70/1475

    摘要： The invention presents a highly efficient, tightly regulated DC-to-DC converter which can be used in various applications, especially multiple output converters. The converter uses a buck converter to produce an intermediate bus voltage. A current-fed double ended circuit, such as bridge or push-pull circuit, couples to the buck converter to provide power to outputs. The double ended circuit operates at about 50% duty. The secondary output filter inductor is not required. With 50% duty cycle operation, the secondary rectifiers are easily controlled by either a self-driven or an external driven circuit. The secondary windings can also be stacked up to simplify the transformer design. In addition, bias voltages needed for control circuitry can also be obtained by adding extra windings to the power transformer and extra rectifier devices.

    摘要翻译： 本发明提出了一种高效，紧密调节的DC-DC转换器，可用于各种应用，特别是多输出转换器。 转换器使用降压转换器产生中间总线电压。 电流馈电双端电路，例如桥接或推挽电路，耦合到降压转换器以向输出提供电力。 双端电路工作在约50％的占空比。 不需要次级输出滤波电感。 通过50％占空比操作，二次整流器可以通过自驱动或外部驱动电路轻松控制。 次级绕组也可以堆叠起来，以简化变压器设计。 此外，控制电路所需的偏置电压也可以通过向电力变压器和额外的整流器装置增加额外的绕组来获得。