公开(公告)号：US20130049709A1

公开(公告)日：2013-02-28

申请号：US13219513

申请日：2011-08-26

申请人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

发明人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

IPC分类号： G05F1/70

CPC分类号： H02M1/4208 ,  H02M1/32 ,  H02M1/4225 ,  H02M5/20 ,  H02M5/293 ,  Y02B70/126

摘要： An embodiment holdup time circuit of a bridgeless power factor correction circuit comprises a charge device, an energy storage apparatus and a discharge device. The charge device comprises a first terminal coupled to a bridgeless power factor correction circuit and a second terminal coupled to the energy storage apparatus. The discharge device comprises a first terminal coupled to the energy storage apparatus and a second terminal coupled to the bridgeless power factor correction circuit.

摘要翻译： 无桥功率因数校正电路的实施例保持时间电路包括充电装置，能量存储装置和放电装置。 充电装置包括耦合到无桥功率因数校正电路的第一端子和耦合到能量存储装置的第二端子。 放电装置包括耦合到能量存储装置的第一端子和耦合到无桥功率因数校正电路的第二端子。

公开(公告)号：US08970067B2

公开(公告)日：2015-03-03

申请号：US13307946

申请日：2011-11-30

申请人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

发明人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

IPC分类号： H02J1/00 ,  H02M3/335

CPC分类号： H02J1/00 ,  H02M3/158 ,  H02M3/335 ,  H02M3/33592 ,  H02M3/3374 ,  H02M3/3384 ,  Y02B70/1475 ,  Y10T307/707

摘要： An embodiment hybrid dc/dc converter comprises a first power source and a low power converter coupled to the first power source. The low power converter generates an output connected in series with the first power source. The hybrid dc/dc converter further comprises a selection network coupled to the first power source and the output of the low power converter and a main unregulated power converter coupled to the selection network. By controlling the voltage across the output of the low power converter, the hybrid dc/dc converter can achieve high efficiency through the unregulated power converter.

摘要翻译： 实施例的混合DC / DC转换器包括耦合到第一电源的第一电源和低功率转换器。 低功率转换器产生与第一电源串联连接的输出。 混合式DC / DC转换器还包括耦合到第一电源的选择网络和低功率转换器的输出以及耦合到选择网络的主不调节功率转换器。 通过控制低功率转换器输出端的电压，混合直流/直流转换器可以通过未调节的功率转换器实现高效率。

公开(公告)号：US08564984B2

公开(公告)日：2013-10-22

申请号：US12964925

申请日：2010-12-10

申请人： Hengchun Mao ,  Dianbo Fu ,  Zhaozheng Hou ,  Xujun Liu ,  Bing Cai

发明人： Hengchun Mao ,  Dianbo Fu ,  Zhaozheng Hou ,  Xujun Liu ,  Bing Cai

IPC分类号： H02H7/122 ,  H02M3/335

CPC分类号： H02M3/337 ,  H02M3/28 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

摘要： A soft switching apparatus comprises an energy recovery channel formed by two diodes in series connection and a resonant tank formed by an inductor and a capacitor. The soft switching apparatus is coupled to the primary side of a bridge converter. An energy transfer process during L-C resonance helps to reduce the amplitude of the current flowing through the inductor in a freewheeling period. Furthermore, the soft switching apparatus can help to reduce the voltage stress across the secondary switching devices as well as the shoot-through currents flowing through the secondary switching devices, and thus enabling the reduction or elimination of dead time in a secondary synchronous rectifier control scheme.

摘要翻译： 软开关装置包括由串联的两个二极管形成的能量回收通道和由电感器和电容器形成的谐振槽。 软开关装置耦合到桥式变流器的初级侧。 在L-C共振期间的能量转移过程有助于在续流期间减小流过电感器的电流的幅度。 此外，软开关装置有助于降低二次开关器件上的电压应力以及流过二次开关器件的直通电流，从而能够减少或消除次级同步整流器控制方案中的死区时间 。

公开(公告)号：US20130135903A1

公开(公告)日：2013-05-30

申请号：US13307946

申请日：2011-11-30

申请人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

发明人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

IPC分类号： H02M3/335

CPC分类号： H02J1/00 ,  H02M3/158 ,  H02M3/335 ,  H02M3/33592 ,  H02M3/3374 ,  H02M3/3384 ,  Y02B70/1475 ,  Y10T307/707

摘要： An embodiment hybrid dc/dc converter comprises a first power source and a low power converter coupled to the first power source. The low power converter generates an output connected in series with the first power source. The hybrid dc/dc converter further comprises a selection network coupled to the first power source and the output of the low power converter and a main unregulated power converter coupled to the selection network. By controlling the voltage across the output of the low power converter, the hybrid dc/dc converter can achieve high efficiency through the unregulated power converter.

摘要翻译： 实施例的混合DC / DC转换器包括耦合到第一电源的第一电源和低功率转换器。 低功率转换器产生与第一电源串联连接的输出。 混合式dc / dc转换器还包括耦合到第一电源的选择网络和低功率转换器的输出以及耦合到选择网络的主不调节功率转换器。 通过控制低功率转换器输出端的电压，混合直流/直流转换器可以通过未调节的功率转换器实现高效率。

公开(公告)号：US20120063173A1

公开(公告)日：2012-03-15

申请号：US13219476

申请日：2011-08-26

申请人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

发明人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

IPC分类号： H02M3/335 ,  G01R31/28

CPC分类号： H02M3/28 ,  H02M2001/123

摘要： An embodiment common mode noise reduction apparatus comprises a common mode choke, a balance inductor, a first capacitor and a second capacitor. The common mode choke is placed between an input dc source and a primary side network of an isolated power converter. The balance inductor is coupled between an upper terminal of a primary winding of the isolated power converter and a negative terminal of the input dc source. The first capacitor is coupled between the upper terminal of a primary side of a transformer and an upper terminal of a secondary side of the transformer of the isolated power converter. The second capacitor is coupled between a lower terminal of the primary side of the transformer and a lower terminal of the secondary side of the transformer of the isolated power converter.

摘要翻译： 一种实施方式的共模噪声降低装置包括共模扼流圈，平衡电感器，第一电容器和第二电容器。 共模扼流圈放置在隔离电源转换器的输入直流电源和初级侧网络之间。 平衡电感器耦合在隔离电力转换器的初级绕组的上端和输入直流源的负极之间。 第一电容器耦合在变压器的初级侧的上端子和隔离功率转换器的变压器的次级侧的上端之间。 第二电容器耦合在变压器的初级侧的下端子和隔离的功率转换器的变压器的次级侧的下端之间。

公开(公告)号：US09590495B2

公开(公告)日：2017-03-07

申请号：US13219513

申请日：2011-08-26

申请人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

发明人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

IPC分类号： G05F5/00 ,  H02M1/42 ,  H02M1/32

CPC分类号： H02M1/4208 ,  H02M1/32 ,  H02M1/4225 ,  H02M5/20 ,  H02M5/293 ,  Y02B70/126

摘要： An embodiment holdup time circuit of a bridgeless power factor correction circuit comprises a charge device, an energy storage apparatus and a discharge device. The charge device comprises a first terminal coupled to a bridgeless power factor correction circuit and a second terminal coupled to the energy storage apparatus. The discharge device comprises a first terminal coupled to the energy storage apparatus and a second terminal coupled to the bridgeless power factor correction circuit.

摘要翻译： 无桥功率因数校正电路的实施例保持时间电路包括充电装置，能量存储装置和放电装置。 充电装置包括耦合到无桥功率因数校正电路的第一端子和耦合到能量存储装置的第二端子。 放电装置包括耦合到能量存储装置的第一端子和耦合到无桥功率因数校正电路的第二端子。

公开(公告)号：US09088215B2

公开(公告)日：2015-07-21

申请号：US13156203

申请日：2011-06-08

申请人： Hengchun Mao ,  Dianbo Fu ,  Bing Cai

发明人： Hengchun Mao ,  Dianbo Fu ,  Bing Cai

IPC分类号： H05K7/00 ,  H02M3/158 ,  H02M3/00

CPC分类号： H02M3/158 ,  H01L21/4828 ,  H01L21/4842 ,  H01L23/49562 ,  H01L23/49575 ,  H01L23/49589 ,  H01L24/81 ,  H01L25/0655 ,  H01L25/0657 ,  H01L25/16 ,  H01L25/50 ,  H01L2225/06513 ,  H01L2225/06517 ,  H01L2924/1205 ,  H01L2924/1206 ,  H01L2924/1207 ,  H01L2924/13091 ,  H01L2924/14252 ,  H01L2924/1426 ,  H02M3/00 ,  H02M3/1588 ,  Y02B70/1466 ,  Y10T29/4913

摘要： An embodiment power converter package comprises a semiconductor die, an output inductor, a plurality of input capacitors and output capacitors. The semiconductor die, the output inductor and the plurality of capacitors are mounted on a lead frame and connected one to another through various pads on the lead frame. The semiconductor die comprises a high side switch, a low side switch and a driver. The power converter package is electrically coupled to an external pulse width modulation controller through a variety of input and output pads.

摘要翻译： 实施例的功率转换器封装包括半导体管芯，输出电感器，多个输入电容器和输出电容器。 半导体管芯，输出电感器和多个电容器安装在引线框架上，并通过引线框架上的各种焊盘彼此连接。 半导体管芯包括高侧开关，低侧开关和驱动器。 功率转换器封装通过各种输入和输出焊盘电耦合到外部脉宽调制控制器。

公开(公告)号：US20120049819A1

公开(公告)日：2012-03-01

申请号：US12973521

申请日：2010-12-20

申请人： Hengchun Mao ,  Dianbo Fu ,  Bing Cai

发明人： Hengchun Mao ,  Dianbo Fu ,  Bing Cai

IPC分类号： G05F1/00

CPC分类号： H02M3/1582 ,  H02J1/102

摘要： A power system comprising a non-isolated voltage regulator configured to couple to an input voltage and produce an output voltage, wherein the non-isolated voltage regulator is in a power distribution system and configured to boost the input voltage when the input voltage is less than a minimum output voltage, to reduce the input voltage when the input voltage is greater than a maximum output voltage, and to pass-through the input voltage when the input voltage is greater than or equal to the minimum output voltage and less than or equal to the maximum output voltage.

摘要翻译： 一种电力系统，包括被配置为耦合到输入电压并产生输出电压的非隔离电压调节器，其中所述非隔离电压调节器在配电系统中并且被配置为当所述输入电压小于 最小输出电压，以在输入电压大于最大输出电压时降低输入电压，并且当输入电压大于或等于最小输出电压并且小于或等于 最大输出电压。

公开(公告)号：US08957644B2

公开(公告)日：2015-02-17

申请号：US12973521

申请日：2010-12-20

申请人： Hengchun Mao ,  Dianbo Fu ,  Bing Cai

发明人： Hengchun Mao ,  Dianbo Fu ,  Bing Cai

IPC分类号： G05F1/24 ,  H02M3/158 ,  H02J1/10

CPC分类号： H02M3/1582 ,  H02J1/102

摘要： A power system comprising a non-isolated voltage regulator configured to couple to an input voltage and produce an output voltage, wherein the non-isolated voltage regulator is in a power distribution system and configured to boost the input voltage when the input voltage is less than a minimum output voltage, to reduce the input voltage when the input voltage is greater than a maximum output voltage, and to pass-through the input voltage when the input voltage is greater than or equal to the minimum output voltage and less than or equal to the maximum output voltage.

摘要翻译： 一种电力系统，包括被配置为耦合到输入电压并产生输出电压的非隔离电压调节器，其中所述非隔离电压调节器在配电系统中并且被配置为当所述输入电压小于 最小输出电压，以在输入电压大于最大输出电压时降低输入电压，并且当输入电压大于或等于最小输出电压并且小于或等于 最大输出电压。

公开(公告)号：US08670250B2

公开(公告)日：2014-03-11

申请号：US13219476

申请日：2011-08-26

申请人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

发明人： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

IPC分类号： H02J1/02

CPC分类号： H02M3/28 ,  H02M2001/123

摘要： An embodiment common mode noise reduction apparatus comprises a common mode choke, a balance inductor, a first capacitor and a second capacitor. The common mode choke is placed between an input dc source and a primary side network of an isolated power converter. The balance inductor is coupled between an upper terminal of a primary winding of the isolated power converter and a negative terminal of the input dc source. The first capacitor is coupled between the upper terminal of a primary side of a transformer and an upper terminal of a secondary side of the transformer of the isolated power converter. The second capacitor is coupled between a lower terminal of the primary side of the transformer and a lower terminal of the secondary side of the transformer of the isolated power converter.

摘要翻译： 一种实施方式的共模噪声降低装置包括共模扼流圈，平衡电感器，第一电容器和第二电容器。 共模扼流圈放置在隔离电源转换器的输入直流电源和初级侧网络之间。 平衡电感器耦合在隔离电力转换器的初级绕组的上端和输入直流源的负极之间。 第一电容器耦合在变压器的初级侧的上端子和隔离功率转换器的变压器的次级侧的上端之间。 第二电容器耦合在变压器的初级侧的下端子和隔离电力转换器的变压器的次级侧的下端之间。