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1. 发明申请

US20110267844A1 Controller for a Resonant Switched-Mode Power Converter 有权
标题翻译：谐振开关电源转换器的控制器
公开(公告)号：US20110267844A1
公开(公告)日：2011-11-03
申请号：US12771467
申请日：2010-04-30
申请人： Yi He , Tuck Meng Chan , Yong Siang Teo , Xiaowu Gong , Meng Kiat Jeoh
发明人： Yi He , Tuck Meng Chan , Yong Siang Teo , Xiaowu Gong , Meng Kiat Jeoh
IPC分类号： H02M3/335
CPC分类号： H02M3/3378 , H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
摘要： An embodiment of the invention relates to an LLC power converter including a controller configured to regulate an output characteristic of the power converter by controlling a power converter switching frequency. In a first mode of operation, the controller turns off a secondary-side power switch earlier than a turn-off time of a primary-side power switch by a time difference that is controlled by a resistor coupled to an external circuit node. In a second mode of operation, the controller turns on a secondary-side power switch at substantially the same time as the primary-side power switch, and turns off the secondary-side power switch after a maximum on time that is a nonlinear function of a load current of the power converter. The nonlinear function is a substantially constant function of the load current for a value of the load current higher than a threshold value.
摘要翻译：本发明的实施例涉及一种LLC功率转换器，其包括被配置为通过控制功率转换器开关频率来调节功率转换器的输出特性的控制器。在第一操作模式中，控制器比次级侧电源开关早于初级侧电源开关的关断时间，该时间差由耦合到外部电路节点的电阻器控制。在第二操作模式中，控制器在与初级侧电源开关基本相同的时间接通次级侧电源开关，并且在作为非线性功能的最大导通时间之后关闭次级侧电源开关功率转换器的负载电流。对于高于阈值的负载电流的值，非线性函数是负载电流的基本上恒定的函数。

2. 发明申请

US20080024193A1 APPARATUS, SYSTEM, AND METHOD FOR MULTIFUNCTIONAL PIN IN AN INTEGRATED CIRCUIT 失效
标题翻译：集成电路中多功能引脚的装置，系统和方法
公开(公告)号：US20080024193A1
公开(公告)日：2008-01-31
申请号：US11461303
申请日：2006-07-31
申请人： Tuck Meng Chan , Xiao Wu Gong , Yi He , Meng Kiat Jeoh , Junyang Luo
发明人： Tuck Meng Chan , Xiao Wu Gong , Yi He , Meng Kiat Jeoh , Junyang Luo
IPC分类号： H03K17/687
CPC分类号： H03K17/0822 , H03K17/133
摘要： Some embodiments of the invention include an integrated circuit having a node or pin to detect a first information during a first a detection period and to detect a second information during a second detection period. In some embodiments, the information at the pin may allow the integrated circuit to operate in a quasi-resonant operation. Other embodiments are described and claimed.
摘要翻译：本发明的一些实施例包括具有节点或引脚以在第一检测周期期间检测第一信息并在第二检测周期期间检测第二信息的集成电路。在一些实施例中，引脚处的信息可以允许集成电路在准谐振操作中操作。描述和要求保护其他实施例。

3. 发明授权

US07136292B1 Power supply and method for regulating supply voltage 有权
标题翻译：电源和调节电源电压的方法
公开(公告)号：US07136292B1
公开(公告)日：2006-11-14
申请号：US11192982
申请日：2005-07-29
申请人： Tuck Meng Chan , Xiaowu Gong , Jing Hu , Meng Kiat Jeoh , Kok Kee Lim , Junyang Luo
发明人： Tuck Meng Chan , Xiaowu Gong , Jing Hu , Meng Kiat Jeoh , Kok Kee Lim , Junyang Luo
IPC分类号： H02M3/335 , H02M7/44
CPC分类号： H02M1/36 , H02M3/33523 , H02M2001/0032 , Y02B70/16
摘要： In a preferred embodiment, there is provided a switched mode power supply operable in start-up mode, normal mode and standby mode. The power supply may comprise a transformer having a primary winding on a primary side and a secondary winding on a secondary side, the primary winding being coupleable to a DC input voltage, and circuitry on the secondary side being arranged to provide a DC output voltage; and a power controller. The power controller may comprise a regulation controller for regulating a DC supply voltage on a supply line during standby mode, and a high voltage device coupled to the DC input voltage and the supply line. The current through the high voltage device to the supply line, during standby mode, may be controlled by the regulation controller. During standby mode, when the supply voltage is greater than or equal to a reference voltage, the current through the high voltage device to the supply line is substantially zero. When the supply voltage is less than the reference voltage, the greater the difference between the supply voltage and the reference voltage, the greater the current through the high voltage device to the supply line. In other preferred embodiments, there is also provided the power controller itself and a method for regulating a supply voltage during standby mode.
摘要翻译：在优选实施例中，提供了一种在启动模式，正常模式和待机模式下可操作的开关模式电源。电源可以包括具有初级侧的初级绕组和次级侧的次级绕组的变压器，初级绕组可耦合到DC输入电压，并且次级侧上的电路布置成提供DC输出电压; 和电源控制器。功率控制器可以包括用于在待机模式期间调节供电线路上的直流电源电压的调节控制器和耦合到直流输入电压和电源线的高压设备。电流通过高压设备到电源线，在待机模式下，可由调节控制器控制。在待机模式下，当电源电压大于或等于参考电压时，通过高压设备到电源线的电流基本为零。当电源电压小于参考电压时，电源电压和参考电压之差越大，通过高压设备到电源线的电流越大。在其他优选实施例中，还提供了功率控制器本身以及用于在待机模式期间调节电源电压的方法。

4. 发明授权

US08102679B2 Utilization of a multifunctional pin to control a switched-mode power converter 有权
标题翻译：利用多功能引脚来控制开关式功率转换器
公开(公告)号：US08102679B2
公开(公告)日：2012-01-24
申请号：US12192399
申请日：2008-08-15
申请人： Xiaowu Gong , Siu Kam Kok , Yi He , Tuck Meng Chan
发明人： Xiaowu Gong , Siu Kam Kok , Yi He , Tuck Meng Chan
IPC分类号： H02M3/335
CPC分类号： H02M3/156 , H02M3/33507 , H02M2001/0022 , H02M2001/0032 , Y02B70/16
摘要： An embodiment of the invention relates to a power converter including a resistor divider with an internal node to sense an input line voltage. The internal node is operable as a multifunctional pin. A controller compares a feedback voltage dependent on a power converter output characteristic to a current-sense signal including an offset dependent on a voltage of the internal node to control entry and exit of the power converter from burst mode operation. The node may be employed to manage power converter operation by sensing or controlling its voltage to signal operation in a standby or burst mode, to sense the input line voltage, to enable an external system to signal shutdown to the power converter, and to enable the power converter to signal a delayed restart condition to the external system.
摘要翻译：本发明的实施例涉及一种功率转换器，其包括具有用于感测输入线电压的内部节点的电阻分压器。内部节点可用作多功能引脚。控制器将取决于功率转换器输出特性的反馈电压与包括取决于内部节点的电压的偏移的电流检测信号进行比较，以控制功率转换器的进入和退出以进行突发模式操作。可以采用该节点来管理功率转换器的操作，通过感测或控制其电压以在备用或突发模式下信号操作，以感测输入线路电压，使外部系统能够向功率转换器发出信号关闭，电源转换器向外部系统发出延迟重启状态信号。

5. 发明授权

US07667526B2 Apparatus, system, and method for multifunctional pin in an integrated circuit 失效
标题翻译：集成电路中多功能引脚的装置，系统和方法
公开(公告)号：US07667526B2
公开(公告)日：2010-02-23
申请号：US11461303
申请日：2006-07-31
申请人： Tuck Meng Chan , Xiao Wu Gong , Yi He , Meng Kiat Jeoh , Junyang Luo
发明人： Tuck Meng Chan , Xiao Wu Gong , Yi He , Meng Kiat Jeoh , Junyang Luo
IPC分类号： H03K17/687
CPC分类号： H03K17/0822 , H03K17/133
摘要： Some embodiments of the invention include an integrated circuit having a node or pin to detect a first information during a first a detection period and to detect a second information during a second detection period. In some embodiments, the information at the pin may allow the integrated circuit to operate in a quasi-resonant operation. Other embodiments are described and claimed.
摘要翻译：本发明的一些实施例包括具有节点或引脚以在第一检测周期期间检测第一信息并在第二检测周期期间检测第二信息的集成电路。在一些实施例中，引脚处的信息可以允许集成电路在准谐振操作中操作。描述和要求保护其他实施例。

6. 发明授权

US07558037B1 Over current protection circuit and method 有权
标题翻译：过流保护电路及方法
公开(公告)号：US07558037B1
公开(公告)日：2009-07-07
申请号：US12112885
申请日：2008-04-30
申请人： Xiaowu Gong , Yi He , Tuck Meng Chan
发明人： Xiaowu Gong , Yi He , Tuck Meng Chan
IPC分类号： H02H3/08 , H02H9/02 , H02H3/20 , H02H9/04 , H02H7/00 , H02H9/00 , H02H3/00 , H02H3/22
CPC分类号： H02M3/3376 , H02M1/32
摘要： Circuit and method for providing over-current and overloading protection with a single additional pin. A converter controller circuit is provided that includes a voltage controlled oscillator and outputs upper and lower gating signals for driving the upper and lower driving transistors in a voltage converter, for example, in an inductor-inductor capacitor half-bridge circuit topology. A current sense input pin of the circuit receives a voltage corresponding to the current flowing in the half-bridge circuit. A feedback input pin has an external capacitor coupled to it and receives a voltage from an output voltage sensor at the output terminals. Over-current protection is provided by sensing the voltage at the current sense input pin with no external components needed. Overload protection is provided by utilizing the external feedback capacitor and the feedback input pin during overload conditions. Methods for providing over-current and overload protection are disclosed.
摘要翻译：用一个额外的引脚提供过电流和过载保护的电路和方法。提供了一种转换器控制器电路，其包括压控振荡器，并且输出用于驱动电压转换器中的上下驱动晶体管的上下选通信号，例如在电感 - 电感器电容器半桥电路拓扑中。电路的电流检测输入引脚接收对应于在半桥电路中流动的电流的电压。反馈输入引脚具有耦合到其的外部电容器，并从输出端子处的输出电压传感器接收电压。通过检测电流检测输入引脚上的电压，无需外部元件来提供过电流保护。在过载条件下利用外部反馈电容器和反馈输入引脚提供过载保护。公开了提供过电流和过载保护的方法。

7. 发明授权

US08456868B2 Controller for a resonant switched-mode power converter 有权
标题翻译：谐振开关型功率转换器的控制器
公开(公告)号：US08456868B2
公开(公告)日：2013-06-04
申请号：US12771467
申请日：2010-04-30
申请人： Yi He , Tuck Meng Chan , Yong Siang Teo , Xiaowu Gong , Meng Kiat Jeoh
发明人： Yi He , Tuck Meng Chan , Yong Siang Teo , Xiaowu Gong , Meng Kiat Jeoh
IPC分类号： H02M3/335
CPC分类号： H02M3/3378 , H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
摘要： An embodiment of the invention relates to an LLC power converter including a controller configured to regulate an output characteristic of the power converter by controlling a power converter switching frequency. In a first mode of operation, the controller turns off a secondary-side power switch earlier than a turn-off time of a primary-side power switch by a time difference that is controlled by a resistor coupled to an external circuit node. In a second mode of operation, the controller turns on a secondary-side power switch at substantially the same time as the primary-side power switch, and turns off the secondary-side power switch after a maximum on time that is a nonlinear function of a load current of the power converter. The nonlinear function is a substantially constant function of the load current for a value of the load current higher than a threshold value.
摘要翻译：本发明的实施例涉及一种LLC功率转换器，其包括被配置为通过控制功率转换器开关频率来调节功率转换器的输出特性的控制器。在第一操作模式中，控制器比次级侧电源开关早于初级侧电源开关的关断时间，该时间差由耦合到外部电路节点的电阻器控制。在第二操作模式中，控制器在与初级侧电源开关基本相同的时间接通次级侧电源开关，并且在作为非线性功能的最大导通时间之后关闭次级侧电源开关功率转换器的负载电流。对于高于阈值的负载电流的值，非线性函数是负载电流的基本上恒定的函数。

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