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1. 发明授权

US08525428B2 Power supply apparatus and method for a backlight system 有权
标题翻译：用于背光系统的电源装置和方法
公开(公告)号：US08525428B2
公开(公告)日：2013-09-03
申请号：US12986960
申请日：2011-01-07
申请人： Fan Chen , Xin Wu , Chaoqun Sun , Qanqing Wu
发明人： Fan Chen , Xin Wu , Chaoqun Sun , Qanqing Wu
IPC分类号： H05B37/02 , H05B39/04 , H05B41/36 , H05B39/02 , H05B41/16 , H05B41/24 , H05B37/00 , H05B39/00 , H05B41/00 , G01F1/00 , H02M3/335
CPC分类号： H02M3/337 , G09G3/34 , G09G2330/00 , H02M2001/007
摘要： A power supply system includes a transformer having a primary winding on its primary side for coupling to a power source and one or more secondary windings on its secondary side. A first control circuit is disposed on the primary side of the transformer for controlling a current flow in the primary winding. A second control circuit disposed on the secondary side of the transformer, and the second control circuit is configured to provide a regulated output voltage. In the power supply system, the first control circuit is configured to generate a control signal for controlling the current flow in the primary winding without using a feedback control signal from the secondary side of the transformer.
摘要翻译：电源系统包括：变压器，其初级侧具有用于耦合到电源的初级绕组和其次级侧上的一个或多个次级绕组。第一控制电路设置在变压器的初级侧，用于控制初级绕组中的电流。设置在变压器次级侧的第二控制电路，第二控制电路被配置为提供稳定的输出电压。在电源系统中，第一控制电路被配置为产生用于控制初级绕组中的电流的控制信号，而不使用来自变压器的次级侧的反馈控制信号。

2. 发明授权

US07184280B2 LLC series resonant converter and the driving method for the synchronous rectification power switches thereof 有权
标题翻译： LLC串联谐振转换器及其同步整流电源开关的驱动方法
公开(公告)号：US07184280B2
公开(公告)日：2007-02-27
申请号：US11158534
申请日：2005-06-21
申请人： Chaoqun Sun , Hongjian Gan , Jianping Ying
发明人： Chaoqun Sun , Hongjian Gan , Jianping Ying
IPC分类号： H02M3/315
CPC分类号： H02M3/3376 , H02M3/33592 , Y02B70/1433 , Y02B70/1475 , Y02P80/112
摘要： An LLC series resonant converter and a driving method for the synchronous rectification power switches thereof are provided. The LLC series resonant converter includes a bridge circuit, a resonant network, a transformer, a rectification circuit, and a frequency adjustment controller. The bridge circuit includes at least one pair of power switches. The power switches drive the resonant network. The rectification circuit includes at least one pair of synchronous rectification power switches. The synchronous rectification power switches and the power switches have a mapping relation between them. The frequency adjustment controller provides driving signals to the synchronous rectification power switches in response to the operating frequency of the LLC series resonant converter and the series resonant frequency of the resonant network, to implement synchronous rectification in the LLC series resonant converter.
摘要翻译：提供一种LLC串联谐振变换器及其同步整流电源开关的驱动方法。 LLC串联谐振变换器包括桥式电路，谐振网络，变压器，整流电路和频率调节控制器。桥接电路包括至少一对电源开关。电源开关驱动谐振网络。整流电路包括至少一对同步整流电源开关。同步整流电源开关和电源开关之间具有映射关系。频率调节控制器响应于LLC串联谐振变换器的工作频率和谐振网络的串联谐振频率向同步整流功率开关提供驱动信号，以在LLC串联谐振变换器中实现同步整流。

3. 发明授权

US06639814B2 Constant voltage reset circuit for forward converter 有权
标题翻译：正转换器恒压复位电路
公开(公告)号：US06639814B2
公开(公告)日：2003-10-28
申请号：US10011541
申请日：2001-12-03
申请人： Hongjian Gan , Zhongwei Ke , Chaoqun Sun , Alpha J. Zhang
发明人： Hongjian Gan , Zhongwei Ke , Chaoqun Sun , Alpha J. Zhang
IPC分类号： H02M3335
CPC分类号： H02M3/33538
摘要： A constant voltage reset circuit used in a forward converter for the holdup time requirement or the wide input voltage range is disclosed. In one embodiment, the constant voltage reset circuit comprises a reset capacitor, a parallel-coupled switch, and a diode coupled in series with the reset capacitor which is configured to cooperate therewith to reset an energy from the transformer. The forward converter employing the reset circuit or the method achieves a higher efficiency with a larger turn ratio and without the 50% limitation of maximum duty cycle.
摘要翻译：公开了一种用于正向转换器中用于保持时间要求或宽输入电压范围的恒压复位电路。在一个实施例中，恒压复位电路包括复位电容器，并联耦合开关和与复位电容器串联耦合的二极管，其被配置为与其配合以复位来自变压器的能量。使用复位电路的正激转换器或该方法以更大的匝数比实现更高的效率，而没有最大占空比的50％的限制。

4. 发明申请

US20050237010A1 Architecture of power supply system for LCD apparatus 审中-公开
标题翻译： LCD设备电源系统架构
公开(公告)号：US20050237010A1
公开(公告)日：2005-10-27
申请号：US11070642
申请日：2005-03-02
申请人： Jianping Ying , Chaoqun Sun , Hongjian Gan
发明人： Jianping Ying , Chaoqun Sun , Hongjian Gan
IPC分类号： G02F1/133 , H05B39/00 , H05B41/24 , H05B41/282
CPC分类号： H05B41/282 , H05B41/245 , Y02B20/183
摘要： The proposed architecture includes a Dual Boost PFC circuit for receiving the AC input voltage and generating the DC bus voltage, at least one inverter coupled to the Dual Boost PFC circuit for driving at least one CCFL to offer a backlight of a LCD panel, and a DC/DC converter coupled to the Dual Boost PFC circuit for offering power to the LCD apparatus. Since neither the input bridge rectifier nor the DC/DC converter between the PFC circuit and the backlight inverter is included in the presented architecture, relatively the simpler configuration and the higher conversion efficiency than those of the prior art are achieved.
摘要翻译：所提出的架构包括用于接收AC输入电压并产生DC总线电压的双升压PFC电路，耦合到双升压PFC电路的至少一个逆变器用于驱动至少一个CCFL以提供LCD面板的背光，以及耦合到双升压PFC电路的DC / DC转换器，为LCD装置提供电力。由于PFC电路和背光反相器之间的输入桥式整流器和DC / DC转换器都不包括在本架构中，所以实现了比现有技术更简单的配置和更高的转换效率。

5. 发明申请

US20120025720A1 POWER SUPPLY APPARATUS AND METHOD FOR A BACKLIGHT SYSTEM 有权
标题翻译：背光系统的电源装置和方法
公开(公告)号：US20120025720A1
公开(公告)日：2012-02-02
申请号：US12986960
申请日：2011-01-07
申请人： Fan Chen , Xin Wu , Chaoqun Sun , Qanqing Wu
发明人： Fan Chen , Xin Wu , Chaoqun Sun , Qanqing Wu
IPC分类号： H05B37/00 , H02M3/337 , H02M3/335
CPC分类号： H02M3/337 , G09G3/34 , G09G2330/00 , H02M2001/007
摘要： A power supply system includes a transformer having a primary winding on its primary side for coupling to a power source and one or more secondary windings on its secondary side. A first control circuit is disposed on the primary side of the transformer for controlling a current flow in the primary winding. A second control circuit disposed on the secondary side of the transformer, and the second control circuit is configured to provide a regulated output voltage. In the power supply system, the first control circuit is configured to generate a control signal for controlling the current flow in the primary winding without using a feedback control signal from the secondary side of the transformer.
摘要翻译：电源系统包括：变压器，其初级侧具有用于耦合到电源的初级绕组和其次级侧上的一个或多个次级绕组。第一控制电路设置在变压器的初级侧，用于控制初级绕组中的电流。设置在变压器次级侧的第二控制电路，第二控制电路被配置为提供稳定的输出电压。在电源系统中，第一控制电路被配置为产生用于控制初级绕组中的电流的控制信号，而不使用来自变压器的次级侧的反馈控制信号。

6. 发明授权

US07518263B2 Time delay control scheme for a power supply with multiple outputs 有权
标题翻译：具有多个输出的电源的延时控制方案
公开(公告)号：US07518263B2
公开(公告)日：2009-04-14
申请号：US10823489
申请日：2004-04-12
申请人： Hongjian Gan , Huijie Xue , Chaoqun Sun , Alpha J. Zhang
发明人： Hongjian Gan , Huijie Xue , Chaoqun Sun , Alpha J. Zhang
IPC分类号： H02J3/14 , H02J3/12
CPC分类号： H02M3/33561 , H02M2001/007 , H02M2001/008 , Y02B70/1433 , Y10T307/406 , Y10T307/414
摘要： A time delay synchronous control scheme for a power supply, which has multiple outputs and tight output regulations, is provided. The switching mode power supply includes (1) a front-end DC/DC converter with current mode output, which can be a LLC Series Resonant converter (SRC) or a flyback converter; (2) one or several post buck converters directly cascaded from the output capacitor of the front-end DC/DC converter; (3) a new scheme of time delay synchronous control used to make the post buck synchronize and modulate from the front-end LLC-SRC or flyback converter. The proposed time delay synchronous control circuit can eliminate the conventional input filter of the post buck converters, as well as reduce the ripple current on the output capacitor of the front-end DC/DC converter, as a result of which, a high efficiency for the overall architecture can be obtained.
摘要翻译：提供了具有多个输出和严格的输出规定的电源的延时同步控制方案。开关电源包括（1）具有电流模式输出的前端DC / DC转换器，可以是LLC系列谐振转换器（SRC）或反激式转换器; （2）从前端DC / DC转换器的输出电容器直接级联的一个或多个后降压转换器; （3）用于使前置放大器同步并从前端LLC-SRC或反激转换器调制的时间延迟同步控制的新方案。所提出的延时同步控制电路可以消除后降压转换器的常规输入滤波器，并减少前端DC / DC转换器的输出电容上的纹波电流，结果是高效率可以获得整体架构。

7. 发明申请

US20060187686A1 LLC series resonant converter and the driving method for the synchronous rectification power switches thereof 有权
标题翻译： LLC串联谐振变换器及其同步整流电源开关的驱动方法
公开(公告)号：US20060187686A1
公开(公告)日：2006-08-24
申请号：US11158534
申请日：2005-06-21
申请人： Chaoqun Sun , Hongjian Gan , Jianping Ying
发明人： Chaoqun Sun , Hongjian Gan , Jianping Ying
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , H02M3/33592 , Y02B70/1433 , Y02B70/1475 , Y02P80/112
摘要： An LLC series resonant converter and a driving method for the synchronous rectification power switches thereof are provided. The LLC series resonant converter includes a bridge circuit, a resonant network, a transformer, a rectification circuit, and a frequency adjustment controller. The bridge circuit includes at least one pair of power switches. The power switches drive the resonant network. The rectification circuit includes at least one pair of synchronous rectification power switches. The synchronous rectification power switches and the power switches have a mapping relation between them. The frequency adjustment controller provides driving signals to the synchronous rectification power switches in response to the operating frequency of the LLC series resonant converter and the series resonant frequency of the resonant network, to implement synchronous rectification in the LLC series resonant converter.
摘要翻译：提供一种LLC串联谐振变换器及其同步整流电源开关的驱动方法。 LLC串联谐振变换器包括桥式电路，谐振网络，变压器，整流电路和频率调节控制器。桥接电路包括至少一对电源开关。电源开关驱动谐振网络。整流电路包括至少一对同步整流电源开关。同步整流电源开关和电源开关之间具有映射关系。频率调节控制器响应于LLC串联谐振变换器的工作频率和谐振网络的串联谐振频率向同步整流功率开关提供驱动信号，以在LLC串联谐振变换器中实现同步整流。

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