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1.发明申请公开(公告)号：US20100321039A1
公开(公告)日：2010-12-23
申请号：US12862654
申请日：2010-08-24
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 。
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2.发明授权Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply 有权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
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。
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3.发明授权Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply 有权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：US08427124B2
公开(公告)日：2013-04-23
申请号：US13193284
申请日：2011-07-28
IPC分类号： G05F1/40
CPC分类号： H02M3/33523 , H02M3/33507 , H02M2001/0009 , H03K17/0822
摘要： A method and apparatus of reducing peak current variation with changing input line voltage in a switch mode power supply is disclosed. An example method includes sensing a current through a switching device of the switch mode power supply. A variable current limit threshold is generated, which increases from a first level to a second level during an on time of the switching device. The current is compared to the variable current limit threshold. A feedback signal representative of an output voltage of the switch mode power supply is sensed. The switching device is controlled in response to the feedback signal and said comparing the current to the variable current limit threshold.
摘要翻译： 公开了一种通过改变开关模式电源中的输入线电压来降低峰值电流变化的方法和装置。 示例性方法包括感测通过开关模式电源的开关装置的电流。 产生可变电流限制阈值，其在开关装置的接通时间期间从第一电平增加到第二电平。 将电流与可变电流限制阈值进行比较。 检测表示开关模式电源的输出电压的反馈信号。 响应于反馈信号来控制开关装置，并且将电流与可变电流限制阈值进行比较。
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4.发明申请METHOD AND APPARATUS FOR MAINTAINING A CONSTANT LOAD CURRENT WITH LINE VOLTAGE IN A SWITCH MODE POWER SUPPLY 有权用于在开关模式电源中维持线路电压的恒定负载电流的方法和装置公开(公告)号：US20110025288A1
公开(公告)日：2011-02-03
申请号：US12904015
申请日：2010-10-13
IPC分类号： G05F1/40
CPC分类号： H02M3/33523 , H02M3/33507 , H02M2001/0009 , H03K17/0822
摘要： A power supply regulator including a variable current limit threshold that increases during an on time of a switch. In one aspect, a power supply regulator includes a comparator coupled to receive a signal representative of a current through a switch during an on time of the switch. The comparator is further coupled to receive a variable current limit threshold that increases during the on time of the switch. The power supply regulator also includes a feedback circuit coupled to receive a feedback signal representative of an output of a power supply. A control circuit is also included and is coupled to the switch, to an output of the comparator, and to an output of the feedback circuit. The control circuit is coupled to control a switching of the switch in response the output of the comparator and the output of the feedback circuit to regulate the output of the power supply.
摘要翻译： 一种电源调节器，其包括在开关导通时间期间增加的可变电流限制阈值。 在一个方面，电源调节器包括比较器，其耦合以在开关的接通时间期间接收表示通过开关的电流的信号。 比较器还被耦合以接收在开关导通时间期间增加的可变电流限制阈值。 电源调节器还包括耦合以接收表示电源的输出的反馈信号的反馈电路。 还包括控制电路，并且耦合到开关，比较器的输出端和反馈电路的输出端。 控制电路被耦合以响应于比较器的输出和反馈电路的输出来控制开关的开关，以调节电源的输出。
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5.发明授权Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply 有权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：US08013584B2
公开(公告)日：2011-09-06
申请号：US12904015
申请日：2010-10-13
IPC分类号： G05F1/40
CPC分类号： H02M3/33523 , H02M3/33507 , H02M2001/0009 , H03K17/0822
摘要： A power supply regulator including a variable current limit threshold that increases during an on time of a switch. In one aspect, a power supply regulator includes a comparator coupled to receive a signal representative of a current through a switch during an on time of the switch. The comparator is further coupled to receive a variable current limit threshold that increases during the on time of the switch. The power supply regulator also includes a feedback circuit coupled to receive a feedback signal representative of an output of a power supply. A control circuit is also included and is coupled to the switch, to an output of the comparator, and to an output of the feedback circuit. The control circuit is coupled to control a switching of the switch in response the output of the comparator and the output of the feedback circuit to regulate the output of the power supply.
摘要翻译： 一种电源调节器，其包括在开关导通时间期间增加的可变电流限制阈值。 在一个方面，电源调节器包括比较器，其耦合以在开关的接通时间期间接收表示通过开关的电流的信号。 比较器还被耦合以接收在开关导通时间期间增加的可变电流限制阈值。 电源调节器还包括耦合以接收表示电源的输出的反馈信号的反馈电路。 还包括控制电路，并且耦合到开关，比较器的输出端和反馈电路的输出端。 控制电路被耦合以响应于比较器的输出和反馈电路的输出来控制开关的开关，以调节电源的输出。
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6.发明授权Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply 有权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：US07834605B2
公开(公告)日：2010-11-16
申请号：US12581054
申请日：2009-10-16
IPC分类号： G05F1/40
CPC分类号： H02M3/33523 , H02M3/33507 , H02M2001/0009 , H03K17/0822
摘要： A power supply regulator including a variable current limit threshold that increases during an on time of a switch. In one aspect, a power supply regulator includes a comparator that has a first input coupled to sense a voltage representative of a current flowing through a switch during an on time of the switch. The comparator has a second input coupled to receive a variable current limit threshold that increases during the on time of the switch. A feedback circuit is coupled to receive a feedback signal representative of an output voltage at an output of a power supply. A control circuit is coupled to generate a control signal in response to an output of the comparator and in response to an output of the feedback circuit. The control signal is to be coupled to a control terminal of the switch to control switching of the switch.
摘要翻译： 一种电源调节器，其包括在开关导通时间期间增加的可变电流限制阈值。 在一个方面，电源调节器包括比较器，其具有耦合以在开关导通期间感测代表流过开关的电流的电压的第一输入。 比较器具有耦合以接收在开关导通时间期间增加的可变电流限制阈值的第二输入。 耦合反馈电路以接收代表电源输出端的输出电压的反馈信号。 控制电路被耦合以响应于比较器的输出并且响应于反馈电路的输出而产生控制信号。 控制信号要耦合到开关的控制端，以控制开关的切换。
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7.发明授权公开(公告)号：US07425834B2
公开(公告)日：2008-09-16
申请号：US11213252
申请日：2005-08-26
IPC分类号： G01R31/12
CPC分类号： G01R27/26 , G01R27/2605 , H01L2924/0002 , H02M3/33523 , H02M2001/0025 , H01L2924/00
摘要： Techniques are disclosed to select functional parameters and/or operating modes of a circuit based on a time measurement are disclosed. One example integrated circuit includes a threshold detection and timing circuit that is coupled to measure a signal during an initialization period of the integrated circuit from a multifunction capacitor that is to be coupled to a first terminal of the integrated circuit. A selection circuit is coupled to the threshold detection and timing circuit to select a parameter/mode of the integrated circuit in response to the measured signal from the multifunction capacitor during the initialization period of the integrated circuit. The multifunction capacitor is coupled to provide an additional function for the integrated circuit after the initialization period of the integrated circuit is complete.
摘要翻译： 公开了基于时间测量来选择功能参数和/或电路的操作模式的技术。 一个示例集成电路包括阈值检测和定时电路，其被耦合以在集成电路的初始化周期期间从要耦合到集成电路的第一端子的多功能电容器测量信号。 选择电路耦合到阈值检测和定时电路，以在集成电路的初始化期间响应于来自多功能电容器的测量信号来选择集成电路的参数/模式。 多功能电容器被耦合以在集成电路的初始化周期完成之后为集成电路提供附加功能。
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8.发明授权Methods and apparatus for maintaining an approximate constant current output characteristic in a switched mode power supply 失效用于在开关模式电源中维持近似恒定电流输出特性的方法和装置公开(公告)号：US07301319B2
公开(公告)日：2007-11-27
申请号：US11582628
申请日：2006-10-17
申请人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong , David Michael Hugh Matthews , Erdem Bircan
发明人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong , David Michael Hugh Matthews , Erdem Bircan
IPC分类号： G05F1/56
CPC分类号： H02M3/33507 , H02M3/156 , H02M2001/0006
摘要： A regulator circuit maintaining an approximate constant current output characteristic. In one aspect, a disclosed regulator controls a switch that has a current limit threshold. A supply terminal and feedback terminal of the regulator are connected together as a control terminal such that a shunt regulator current is the control terminal current in excess of the internal supply current consumed by the regulator. The current limit threshold of the switch is changed as a function of the shunt regulator current. In another aspect, a control input of the regulator circuit receives a current that is the sum of the internal supply current consumed by the regulator circuit and a feedback current. The feedback current is a fraction of the consumption current of the regulator circuit and the current limit threshold of the switch is changed as a function of the feedback current.
摘要翻译： 一种保持近似恒流输出特性的稳压电路。 在一个方面，所公开的调节器控制具有电流限制阈值的开关。 调节器的电源端子和反馈端子作为控制端子连接在一起，使得并联调节器电流是超过调节器消耗的内部电源电流的控制端子电流。 开关的电流限制阈值作为分流调节器电流的函数而改变。 在另一方面，调节器电路的控制输入接收作为调节器电路消耗的内部电源电流与反馈电流之和的电流。 反馈电流是调节器电路的消耗电流的一小部分，并且开关的电流限制阈值作为反馈电流的函数而改变。
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9.发明授权Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply 有权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：US07215105B2
公开(公告)日：2007-05-08
申请号：US11397524
申请日：2006-04-03
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. An example circuit includes a switch including first, second and third terminals. The first terminal is coupled or decoupled to the second terminal in response to a control signal received at the third terminal. Voltage sense circuitry is included and is coupled to sense a voltage drop across the switch. The voltage drop is representative of a current in the switch during an on time of the switch. The voltage sense circuitry has a variable current limit threshold that increases between a first level and a second level during the on time of the switch. The control signal is responsive to the variable current limit threshold to regulate a power supply with 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。 示例电路包括包括第一，第二和第三端子的开关。 响应于在第三终端处接收到的控制信号，第一终端被耦合或去耦到第二终端。 包括电压检测电路，并耦合以感测开关两端的电压降。 电压降在开关导通时代表开关中的电流。 电压检测电路具有可变电流限制阈值，其在开关导通时间在第一电平和第二电平之间增加。 控制信号响应于可变电流限制阈值，以具有输出特性的输出特性来调节电源，输出特性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。
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10.发明授权公开(公告)号：US08742771B2
公开(公告)日：2014-06-03
申请号：US12862654
申请日：2010-08-24
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 。
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