-
公开(公告)号：US20130050879A1
公开(公告)日：2013-02-28
申请号：US13216081
申请日：2011-08-23
申请人： Hengchun Mao , Dianbo Fu , Bing Cai
发明人： Hengchun Mao , Dianbo Fu , Bing Cai
CPC分类号： H02M1/4225 , H02H3/20 , H02H3/22 , H02H7/1216 , H02H9/042 , Y02B70/126
摘要： An embodiment bridgeless power factor correction circuit comprises a first boost converter and a second boost converter connected in parallel. A first switch is coupled between the input of the first boost converter and ground. A second switch is coupled between the input of the second boost converter and ground. Both the first switch and the second switch help to reduce the common mode noise of the bridgeless power factor correction circuit. The bridgeless power factor correction circuit further comprises two surge protection diodes coupled between the inputs of two boost converters and the output of the bridgeless power factor correction circuit.
摘要翻译： 实施例无桥功率因数校正电路包括并联连接的第一升压转换器和第二升压转换器。 第一开关耦合在第一升压转换器的输入端和地之间。 第二开关耦合在第二升压转换器的输入和地之间。 第一开关和第二开关都有助于降低无桥功率因数校正电路的共模噪声。 无桥功率因数校正电路还包括耦合在两个升压转换器的输入端和无桥功率因数校正电路的输出之间的两个浪涌保护二极管。
-
公开(公告)号：US08385032B1
公开(公告)日：2013-02-26
申请号：US13216081
申请日：2011-08-23
申请人： Hengchun Mao , Dianbo Fu , Bing Cai
发明人： Hengchun Mao , Dianbo Fu , Bing Cai
CPC分类号： H02M1/4225 , H02H3/20 , H02H3/22 , H02H7/1216 , H02H9/042 , Y02B70/126
摘要： An embodiment bridgeless power factor correction circuit comprises a first boost converter and a second boost converter connected in parallel. A first switch is coupled between the input of the first boost converter and ground. A second switch is coupled between the input of the second boost converter and ground. Both the first switch and the second switch help to reduce the common mode noise of the bridgeless power factor correction circuit. The bridgeless power factor correction circuit further comprises two surge protection diodes coupled between the inputs of two boost converters and the output of the bridgeless power factor correction circuit.
摘要翻译： 实施例无桥功率因数校正电路包括并联连接的第一升压转换器和第二升压转换器。 第一开关耦合在第一升压转换器的输入端和地之间。 第二开关耦合在第二升压转换器的输入和地之间。 第一开关和第二开关都有助于降低无桥功率因数校正电路的共模噪声。 无桥功率因数校正电路还包括耦合在两个升压转换器的输入端和无桥功率因数校正电路的输出之间的两个浪涌保护二极管。
-
公开(公告)号：US20120313595A1
公开(公告)日：2012-12-13
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
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：US20120147629A1
公开(公告)日：2012-06-14
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： H02M3/337
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：US09413268B2
公开(公告)日：2016-08-09
申请号：US13468130
申请日：2012-05-10
IPC分类号： H02M7/5387 , H02M7/487 , H02M3/158 , H02M1/00
摘要： An embodiment multilevel inverter comprises a first boost apparatus having an input coupled to a positive dc bus and a second boost apparatus having an input coupled to a negative dc bus. The multilevel inverter further comprise a first switch coupled to an input of an L-C filter and the first boost apparatus, a second switch coupled to the input of the L-C filter and the second boost apparatus, a third switch coupled between the positive dc bus and the first switch and a fourth switch coupled between the negative dc bus and the second switch.
摘要翻译： 实施例的多电平逆变器包括具有耦合到正直流总线的输入的第一升压装置和具有耦合到负直流总线的输入的第二升压装置。 多电平逆变器还包括耦合到LC滤波器和第一升压装置的输入的第一开关，耦合到LC滤波器和第二升压装置的输入的第二开关，耦合在正直流母线和 第一开关和第四开关，其耦合在负DC总线和第二开关之间。
-
公开(公告)号：US07602154B2
公开(公告)日：2009-10-13
申请号：US11749405
申请日：2007-05-16
申请人： Dianbo Fu , Fred C. Lee
发明人： Dianbo Fu , Fred C. Lee
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M1/08 , Y02B70/1433 , Y02B70/1475
摘要： Phase compensation of a voltage appearing on physical terminals of a synchronous rectifier switching element such as a MOSFET is used to substantially eliminate effects of package inductance of the synchronous rectifier and thus approximate the actual voltage across the circuit element providing synchronous rectification in, for example, a switching power converter. By doing so and using the phase compensated signal to control the synchronous rectifier, switching time may be more suitably controlled to improve efficiency of the synchronous rectifier by substantially eliminating body diode conduction and body diode reverse recovery effects.
摘要翻译： 使用同步整流器开关元件（例如MOSFET）的出现在物理端子上的电压的相位补偿基本上消除了同步整流器的封装电感的影响，并因此近似于电路元件两端的实际电压，提供同步整流，例如， 开关电源转换器。 通过这样做并且使用相位补偿信号来控制同步整流器，可以更适当地控制开关时间，以通过基本上消除体二极管导通和体二极管反向恢复效应来提高同步整流器的效率。
-
公开(公告)号：US20130049918A1
公开(公告)日：2013-02-28
申请号：US13218043
申请日：2011-08-25
申请人： Dianbo Fu , Baoguo Chen
发明人： Dianbo Fu , Baoguo Chen
IPC分类号： H01F27/28
CPC分类号： H01F17/062 , H01F3/12 , H01F2017/0093
摘要： An embodiment integrated common mode choke comprises a magnetic core, a magnetic plate, a first winding coil and a second winding coil. The magnetic plate is inserted within an inner circumference of the magnetic core. The first winding coil and the second winding coil are wound are wound in the same direction through the magnetic core. The integrated common mode choke is equivalent to a common mode choke and a differential mode choke connected in series. The inductance value of the differential mode choke can be changed by adjusting either the gap between the magnetic plate and the magnetic core or the thickness of the magnetic plate.
摘要翻译： 实施例的集成共模扼流圈包括磁芯，磁性板，第一绕组线圈和第二绕组线圈。 磁性板插入磁芯的内周。 卷绕的第一绕组线圈和第二绕组线圈通过磁芯沿相同方向缠绕。 集成式共模扼流圈相当于串联连接的共模扼流圈和差模扼流圈。 可以通过调节磁性板和磁芯之间的间隙或磁性板的厚度来改变差模扼流圈的电感值。
-
公开(公告)号：US20130301314A1
公开(公告)日：2013-11-14
申请号：US13468130
申请日：2012-05-10
摘要： An embodiment multilevel inverter comprises a first boost apparatus having an input coupled to a positive dc bus and a second boost apparatus having an input coupled to a negative dc bus. The multilevel inverter further comprise a first switch coupled to an input of an L-C filter and the first boost apparatus, a second switch coupled to the input of the L-C filter and the second boost apparatus, a third switch coupled between the positive dc bus and the first switch and a fourth switch coupled between the negative dc bus and the second switch.
摘要翻译： 实施例的多电平逆变器包括具有耦合到正直流总线的输入的第一升压装置和具有耦合到负直流总线的输入的第二升压装置。 多电平逆变器还包括耦合到LC滤波器和第一升压装置的输入的第一开关，耦合到LC滤波器和第二升压装置的输入的第二开关，耦合在正直流母线和 第一开关和第四开关，其耦合在负DC总线和第二开关之间。
-
公开(公告)号：US07742318B2
公开(公告)日：2010-06-22
申请号：US12136413
申请日：2008-06-10
申请人： Dianbo Fu , Fred C. Lee , Ya Liu , Ming Xu
发明人： Dianbo Fu , Fred C. Lee , Ya Liu , Ming Xu
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491 , Y02P80/112
摘要： A resonant switched power converter having switching frequency controlled in response to an output voltage thereof achieves over-current protection such as at start-up or under short circuit conditions using a resonant tank circuit which provides a notch filter in addition to a band pass filter. A additional band pass filter provided in the resonant tank circuit achieves increased power transfer to a load and reduced circulating resonant currents and conduction losses. The inductances of the preferred LCLCL tank circuit or other tank circuit with two pass band filters and a notch filter may be integrated into a single electrical component.
摘要翻译： 具有响应于其输出电压控制的开关频率的谐振开关功率转换器，例如在使用提供除带通滤波器之外的陷波滤波器的谐振回路的启动或短路条件下实现过电流保护。 设置在谐振回路中的附加带通滤波器实现了对负载的功率传递增加，循环谐振电流和传导损耗的降低。 具有两个通带滤波器和陷波滤波器的优选LCLCL振荡电路或其它振荡电路的电感可以集成到单个电气部件中。
-
公开(公告)号：US20080285312A1
公开(公告)日：2008-11-20
申请号：US11749405
申请日：2007-05-16
申请人： Dianbo Fu , Fred C. Lee
发明人： Dianbo Fu , Fred C. Lee
CPC分类号： H02M3/33592 , H02M1/08 , Y02B70/1433 , Y02B70/1475
摘要： Phase compensation of a voltage appearing on physical terminals of a synchronous rectifier switching element such as a MOSFET is used to substantially eliminate effects of package inductance of the synchronous rectifier and thus approximate the actual voltage across the circuit element providing synchronous rectification in, for example, a switching power converter. By doing so and using the phase compensated signal to control the synchronous rectifier, switching time may be more suitably controlled to improve efficiency of the synchronous rectifier by substantially eliminating body diode conduction and body diode reverse recovery effects.
摘要翻译： 使用同步整流器开关元件（例如MOSFET）的出现在物理端子上的电压的相位补偿基本上消除了同步整流器的封装电感的影响，并因此近似于电路元件两端的实际电压，提供同步整流，例如， 开关电源转换器。 通过这样做并且使用相位补偿信号来控制同步整流器，可以更适当地控制开关时间，以通过基本上消除体二极管导通和体二极管反向恢复效应来提高同步整流器的效率。
-
-
-
-
-
-
-
-
-
搜索结果
21 条记录 (耗时 0.018 秒)
