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71. 发明授权

US08081496B2 Method and apparatus for limiting maximum output power of a power converter 有权
标题翻译：用于限制功率转换器的最大输出功率的方法和装置
公开(公告)号：US08081496B2
公开(公告)日：2011-12-20
申请号：US13025080
申请日：2011-02-10
申请人： David Michael Hugh Matthews
发明人： David Michael Hugh Matthews
IPC分类号： H02M3/335
CPC分类号： H02M1/32 , H02M3/33507
摘要： An example power converter includes an energy transfer element, a switch, a controller, and a current offset circuit. The controller is coupled to switch the switch between an ON state and an OFF state to regulate the output of the power converter. The controller is also adapted to terminate the ON state of the switch in response to a switch current flowing through the switch reaching a switch current threshold. An auxiliary winding of the energy transfer element is adapted to generate an auxiliary winding voltage that is representative of an input voltage of the power converter only during the ON state of the switch. The current offset circuit is coupled to the auxiliary winding to generate an offset current to flow through the switch in response to the auxiliary winding voltage, where an input current of the power converter is adjusted in response to the offset current.
摘要翻译：示例性功率转换器包括能量传递元件，开关，控制器和电流偏移电路。控制器耦合以在开状态和断开状态之间切换开关，以调节功率转换器的输出。控制器还适于响应于流过开关的开关电流达到开关电流阈值而终止开关的接通状态。能量传递元件的辅助绕组适于仅在开关的接通状态期间产生代表功率转换器的输入电压的辅助绕组电压。电流偏移电路耦合到辅助绕组以响应于辅助绕组电压产生偏移电流流过开关，其中响应于偏移电流调整功率转换器的输入电流。

72. 发明授权

US08031491B2 Method and apparatus for on/off control of a power converter 失效
标题翻译：用于电力转换器的开/关控制的方法和装置
公开(公告)号：US08031491B2
公开(公告)日：2011-10-04
申请号：US12816982
申请日：2010-06-16
申请人： Alex B. Djenguerian , Balu Balakrishnan , Erdem Bircan , David Michael Hugh Matthews
发明人： Alex B. Djenguerian , Balu Balakrishnan , Erdem Bircan , David Michael Hugh Matthews
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M3/157
摘要： A power converter control method and apparatus is disclosed. An example power converter controller according to aspects of the present invention includes a feedback sampling circuit coupled to receive a feedback signal representative of an output of a power converter to generate feedback signal samples during enabled switching cycles. The power converter controller also includes a switch conduction control circuit coupled to the feedback sampling circuit. The switch conduction control circuit includes switch conduction enable circuitry coupled to enable or disable the conduction of a power switch during a switching cycle in response to the feedback signal samples. The switch conduction control circuit also includes switch conduction scheduling circuitry coupled to determine a varying number of future enabled and disabled switching cycles in response to the feedback signal samples from a present switching cycle and one or more past switching cycles.
摘要翻译：公开了一种功率转换器控制方法和装置。根据本发明的方面的示例性功率转换器控制器包括反馈采样电路，其被耦合以接收表示功率转换器的输出的反馈信号，以在启用的开关周期期间产生反馈信号采样。电力转换器控制器还包括耦合到反馈采样电路的开关导通控制电路。开关导通控制电路包括开关导通使能电路，其耦合以响应于反馈信号采样而在开关周期期间启用或禁用功率开关的导通。开关导通控制电路还包括耦合以响应于来自当前开关周期和一个或多个过去开关周期的反馈信号样本确定未来启用和禁用的开关周期的变化数量的开关导通调度电路。

73. 发明申请

US20110194315A1 Power supply circuit with a control terminal for different functional modes of operation 失效
标题翻译：电源电路具有不同功能操作模式的控制端子
公开(公告)号：US20110194315A1
公开(公告)日：2011-08-11
申请号：US12658479
申请日：2010-02-10
申请人： Yury Gaknoki , Tiziano Pastore , Mingming Mao , David Michael Hugh Matthews
发明人： Yury Gaknoki , Tiziano Pastore , Mingming Mao , David Michael Hugh Matthews
IPC分类号： H02M3/335
CPC分类号： H05B33/0815 , H02M3/156 , H02M3/33507
摘要： A method of operation for flyback power converter includes operating a controller of the flyback power converter in a regulation mode when a control signal is below a first threshold. The control signal is provided as an input to a terminal of the flyback power converter. When the control signal is below a second threshold and above the first threshold, the controller is operated in a limiting mode. The controller is operated in an external command mode when the control signal is below a third threshold and above the second threshold. Lastly, when the control signal is above the third threshold, the controller is operated in a protection mode.
摘要翻译：用于反激式功率转换器的操作方法包括当控制信号低于第一阈值时，以调节模式操作回扫功率转换器的控制器。该控制信号被提供给反激式功率转换器的端子作为输入。当控制信号低于第二阈值并高于第一阈值时，控制器在限制模式下操作。当控制信号低于第三阈值并高于第二阈值时，控制器以外部命令模式操作。最后，当控制信号高于第三阈值时，控制器工作在保护模式。

74. 发明申请

US20100321039A1 METHOD AND APPARATUS TO SELECT A PARAMETER/MODE BASED ON A TIME MEASUREMENT 失效
标题翻译：基于时间测量选择参数/模式的方法和装置
公开(公告)号：US20100321039A1
公开(公告)日：2010-12-23
申请号：US12862654
申请日：2010-08-24
申请人： David Michael Hugh Matthews , Alex B. Djenguerian , Kent Wong , Balu Balakrishnan
发明人： David Michael Hugh Matthews , Alex B. Djenguerian , Kent Wong , Balu Balakrishnan
IPC分类号： G01R27/26
CPC分类号： G01R27/26 , G01R27/2605 , H01L2924/0002 , H02M3/33523 , H02M2001/0025 , H01L2924/00
摘要： An example integrated control circuit includes a regulator, a first comparator, a second comparator, and a counter. The regulator is to charge, during a time period, a capacitor. The first comparator is to provide an output indicating when a voltage on the capacitor reaches a first threshold voltage. The second comparator is coupled to provide an output indicating when the voltage on the capacitor reaches a second threshold voltage. The counter is coupled to begin counting in response to the first threshold voltage being reached and is coupled to stop counting in response to the second threshold voltage being reached. The counter is coupled to provide an output representative of the capacitance value of the capacitor during the time period and the integrated control circuit receives a bias current at the terminal from the capacitor to provide power to operate the integrated control circuit after the time period has ended.
摘要翻译：示例性集成控制电路包括调节器，第一比较器，第二比较器和计数器。调节器在一段时间内对电容器充电。第一比较器是提供一个输出，指示电容器上的电压何时达到第一阈值电压。第二比较器被耦合以提供指示电容器上的电压何时达到第二阈值电压的输出。计数器被耦合以响应于达到第一阈值电压而开始计数，并且被耦合以响应于达到第二阈值电压而停止计数。该计数器被耦合以提供表示在该时间段期间电容器的电容值的输出，并且集成控制电路从该电容器接收端子处的偏置电流，以在该时间段结束之后提供对集成控制电路的操作的电力。

75. 发明授权

US07646184B2 Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply 有权
标题翻译：用于在开关模式电源中用线电压维持恒定负载电流的方法和装置
公开(公告)号：US07646184B2
公开(公告)日：2010-01-12
申请号：US11784560
申请日：2007-04-06
申请人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong , David Michael Hugh Matthews
发明人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong , David Michael Hugh Matthews
IPC分类号： G05F1/40
CPC分类号： H02M3/33523 , H02M3/33507 , H02M2001/0009 , H03K17/0822
摘要： A power supply including a regulation circuit that maintains an approximately constant load current with line voltage. In one embodiment, a regulation circuit includes a semiconductor switch and current sense circuitry to sense the current in the semiconductor switch. The current sense circuitry has a current limit threshold. The regulation circuit current limit threshold is varied from a first level to a second level during the time when the semiconductor switch is on. One embodiment of the regulation circuit is used in a power supply having an output characteristic having an approximately constant output voltage below an output current threshold and an approximately constant output current below an output voltage threshold.
摘要翻译：一种电源，包括一个调节电路，该电路用线路电压保持大致恒定的负载电流。在一个实施例中，调节电路包括用于感测半导体开关中的电流的半导体开关和电流检测电路。电流检测电路具有电流限制阈值。在半导体开关导通的时间期间，调节电路电流限制阈值从第一电平变化到第二电平。调节电路的一个实施例用于具有低于输出电流阈值的近似恒定的输出电压和低于输出电压阈值的近似恒定的输出电流的输出特性的电源。

76. 发明申请

US20090140710A1 METHOD AND APPARATUS FOR A HIGH VOLTAGE POWER SUPPLY CIRCUIT 有权
标题翻译：高压电源电路的方法和装置
公开(公告)号：US20090140710A1
公开(公告)日：2009-06-04
申请号：US12347317
申请日：2008-12-31
申请人： David Michael Hugh Matthews
发明人： David Michael Hugh Matthews
IPC分类号： G05F1/40
CPC分类号： H02M7/062
摘要： A high voltage power supply method and apparatus is disclosed. An example power supply circuit includes a rectifier circuit coupled to receive an AC input voltage. A switchmode power converter circuit is coupled to the rectifier circuit to receive a rectified input voltage to generate a regulated output voltage. A switch is coupled between the rectifier circuit and the switchmode power converter circuit. A sense circuit is coupled to detect the AC input voltage. The sense circuit is coupled to turn off the switch when an absolute value of the AC input voltage exceeds a first threshold value. The sense circuit is coupled to turn on the switch when the absolute value of the AC input voltage is below a second threshold value.
摘要翻译：公开了一种高压电源方法和装置。示例电源电路包括耦合以接收AC输入电压的整流电路。开关模式功率转换器电路耦合到整流器电路以接收经整流的输入电压以产生稳定的输出电压。开关耦合在整流器电路和开关模式功率转换器电路之间。耦合感测电路以检测AC输入电压。当AC输入电压的绝对值超过第一阈值时，感测电路被耦合以关闭开关。当AC输入电压的绝对值低于第二阈值时，感测电路被耦合以接通开关。

77. 发明授权

US07193865B2 Switched mode power supply responsive to current derived from voltage across energy transfer element input 失效
标题翻译：开关模式电源响应于跨越能量传输元件输入的电压导出的电流
公开(公告)号：US07193865B2
公开(公告)日：2007-03-20
申请号：US11313126
申请日：2005-12-19
申请人： Balu Balakrishnan , David Michael Hugh Matthews
发明人： Balu Balakrishnan , David Michael Hugh Matthews
IPC分类号： H02M3/335
CPC分类号： H02M3/335 , H02M3/33507 , H02M2001/0009
摘要： A switched mode power supply having a regulated reflected voltage. In one circuit, a power switch is coupled between first and second electrical terminals. An energy transfer element is coupled to the first electrical terminal of the power switch. A power supply rail is coupled to the second electrical terminal. A control circuit is coupled to the energy transfer element and to the power switch. The control circuit is to switch the power switch in response to a signal derived from a voltage at the energy transfer element to regulate an output of the circuit.
摘要翻译：具有调节的反射电压的开关模式电源。在一个电路中，功率开关耦合在第一和第二电端子之间。能量传递元件耦合到电源开关的第一电端子。电源轨耦合到第二电端子。控制电路耦合到能量传递元件和电源开关。控制电路是响应于从能量传递元件的电压导出的信号来切换电源开关，以调节电路的输出。

78. 发明授权

US06995986B2 Switched mode power supply responsive to current derived from voltage across energy transfer element input 失效
公开(公告)号：US06995986B2
公开(公告)日：2006-02-07
申请号：US11065330
申请日：2005-02-23
申请人： Balu Balakrishnan , David Michael Hugh Matthews
发明人： Balu Balakrishnan , David Michael Hugh Matthews
IPC分类号： H02M3/335
CPC分类号： H02M3/335 , H02M3/33507 , H02M2001/0009
摘要： A switched mode power supply having a regulated reflected voltage. In one embodiment, a switched mode power supply includes a power supply regulator coupled between a positive input supply rail of the power supply and a primary winding of an energy transfer element. The reflected voltage across the primary winding of the transfer element is related to the output voltage across a secondary winding of the energy transfer element according to the turns ratio of the energy transfer element. The power supply regulator is coupled to regulate the reflected voltage across the primary winding, thereby regulating the output voltage across secondary winding. In one embodiment, the reflected voltage across the primary winding is sensed through a current representative of the reflected voltage received by the power supply regulator.

79. 发明授权

US06992471B2 Method and apparatus for trimming current limit and frequency to maintain a constant maximum power 失效
标题翻译：用于调整电流限制和频率以保持恒定最大功率的方法和装置
公开(公告)号：US06992471B2
公开(公告)日：2006-01-31
申请号：US11071380
申请日：2005-03-02
申请人： Balu Balakrishnan , Alex B. Djenguerian , David Michael Hugh Matthews
发明人： Balu Balakrishnan , Alex B. Djenguerian , David Michael Hugh Matthews
IPC分类号： G05F1/40
CPC分类号： H02M1/32 , G05F3/262 , H02M3/156 , H02M3/33507 , H02M7/003 , H02M2001/0093 , H03K17/0822
摘要： Methods and apparatuses to trim current limit (Ip ) and frequency (f) to maintain a constant maximum power. In one aspect of the invention, a power supply regulator having a peak current limit detection threshold and an operating frequency is disclosed. The peak current limit threshold or the operating frequency are adjusted specifically to maintain the Ipm·fn product substantially constant from one power supply controller to another where m is substantially equal to 2 and n is substantially equal to 1. In another aspect of the invention, the power supply regulator has a control circuit having a control threshold current. The peak current limit threshold or the operating frequency are adjusted specifically to maintain the product of Ipm·fn divided by the control threshold current substantially constant from one power supply controller to another where m is substantially equal to 2 and n is substantially equal to 1.
摘要翻译：限制电流极限（I SUB）和频率（f）的方法和装置以维持恒定的最大功率。在本发明的一个方面，公开了具有峰值电流限制检测阈值和工作频率的电源调节器。峰值电流限制阈值或工作频率被特别地调整，以保持从一个电源控制器基本上恒定的电压I n 到另一个，其中m基本上等于2，并且n基本上等于1.在本发明的另一方面，电源调节器具有具有控制阈值电流的控制电路。对峰值电流限制阈值或工作频率进行特殊调整，以保持I / O的乘积除以控制阈值电流从一个电源控制器基本上恒定到另一个，其中m基本上等于2，并且n基本上等于1。

80. 发明授权

US06747443B2 Method and apparatus for trimming current limit and frequency to maintain a constant maximum power 有权
标题翻译：用于调整电流限制和频率以保持恒定最大功率的方法和装置
公开(公告)号：US06747443B2
公开(公告)日：2004-06-08
申请号：US10218763
申请日：2002-08-14
申请人： Balu Balakrishnan , Alex B. Djenguerian , David Michael Hugh Matthews
发明人： Balu Balakrishnan , Alex B. Djenguerian , David Michael Hugh Matthews
IPC分类号： G05F140
CPC分类号： H02M1/32 , G05F3/262 , H02M3/156 , H02M3/33507 , H02M7/003 , H02M2001/0093 , H03K17/0822
摘要： Methods and apparatuses to trim current limit (Ip) and frequency (f) to maintain a constant maximum power. In one aspect of the invention, a power supply regulator having a peak current limit detection threshold and an operating frequency is disclosed. The peak current limit threshold or the operating frequency are adjusted specifically to maintain the Ipm·fn product substantially constant from one power supply controller to another where m is substantially equal to 2 and n is substantially equal to 1. In another aspect of the invention, the power supply regulator has a control circuit having a control threshold current. The peak current limit threshold or the operating frequency are adjusted specifically to maintain the product of Ipm·fn divided by the control threshold current substantially constant from one power supply controller to another where m is substantially equal to 2 and n is substantially equal to 1.
摘要翻译：限制电流限制（Ip）和频率（f）以维持恒定最大功率的方法和装置。电源调节器具有峰值电流限制检测阈值和工作频率。峰值电流限制阈值或工作频率在制造过程中被修整，专门用于在从一个电源控制器到另一个电源控制器的运行期间保持Ip .f 产品基本上恒定，其中m基本上等于2，并且n基本相等电源调节器具有具有控制阈值电流的控制电路。峰值电流限制阈值或工作频率在制造过程中被修整，专门用于将Ip .f 的乘积除以从一个电源控制器到另一个电源控制器的控制阈值电流基本恒定，其中m基本上等于2 并且n基本上等于1。

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