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1.发明授权Sample and hold circuits and methods with offset error correction and systems using the same 有权采样和保持电路以及具有偏移误差校正的方法及使用其的系统公开(公告)号：US07088147B2
公开(公告)日：2006-08-08
申请号：US10417443
申请日：2003-04-16
IPC分类号： G11C27/02
CPC分类号： G11C27/024
摘要： A sample and hold circuit including a sampling capacitor for storing a sample of an input signal, an output stage for outputting the sample stored on the sampling capacitor; and input circuitry for sampling the input signal and storing the sample on the sampling capacitor. The input circuitry includes an autozeroing input buffer which selectively samples the input signal during a first operating phase and holds a sample of the input signal during a second operating phase. The autozeroing input buffer cancels any offset error. The input circuitry also includes switching circuitry for selectively coupling the sampling capacitor with an input of the sample and hold circuitry during the second operating phase and to an output of the autozeroing input buffer during the first operating phase.
摘要翻译： 一种采样保持电路，包括用于存储输入信号的采样的采样电容器，用于输出存储在采样电容器上的样本的输出级; 以及用于对输入信号进行采样并将采样存储在采样电容器上的输入电路。 输入电路包括自动调零输入缓冲器，其在第一操作阶段期间选择性地采样输入信号，并且在第二操作阶段期间保持输入信号的采样。 自动归零输入缓冲器取消任何偏移误差。 输入电路还包括用于在第二操作阶段期间将采样电容器与采样和保持电路的输入有选择地耦合的开关电路，以及在第一操作阶段期间自动调零输入缓冲器的输出。
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公开(公告)号：US07224216B2
公开(公告)日：2007-05-29
申请号：US11455592
申请日：2006-06-19
IPC分类号： H03F1/02
摘要： A chopping amplifier and method for chopping an input signal are disclosed. The chopping amplifier and method utilize at least two chopping amplifier stages. A chopping operation of an input signal is segmented across two or more chopping amplifier stages, and the two or more chopping amplifier stages are responsive to a master controller. Chop clock signals of the chopping amplifier stages are staggered so that they have non-overlapping periods and at least one of the chopping amplifier stages is not operating in an open loop at any given time. The non-overlapping periods are periodic so that a master chop clock of the master controller can be operated at a lower chop clock frequency. For every doubling of N number of chopping amplifier stages, magnitudes of chopping artifacts and aliased components are each respectively reduced by 3 dB.
摘要翻译： 公开了一种用于斩波输入信号的斩波放大器和方法。 斩波放大器和方法利用至少两个斩波放大器级。 输入信号的斩波操作跨越两个或更多个斩波放大器级分段，并且两个或更多个斩波放大器级对主控制器做出响应。 斩波放大器级的斩波时钟信号交错，使得它们具有非重叠周期，并且至少一个斩波放大器级在任何给定时间都不在开环中工作。 非重叠周期是周期性的，使得主控制器的主斩波时钟可以以较低的斩波时钟频率工作。 对于N个斩波放大器级的每一倍，斩波伪影和混叠分量的大小分别降低3dB。
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公开(公告)号：US07091771B2
公开(公告)日：2006-08-15
申请号：US10687416
申请日：2003-10-16
IPC分类号： H03F1/02
摘要： A chopping amplifier and method for chopping an input signal are disclosed. The chopping amplifier and method utilize at least two chopping amplifier stages. A chopping operation of an input signal is segmented across two or more chopping amplifier stages, and the two or more chopping amplifier stages are responsive to a master controller. Chop clock signals of the chopping amplifier stages are staggered so that they have non-overlapping periods and at least one of the chopping amplifier stages is not operating in an open loop at any given time. The non-overlapping periods are periodic so that a master chop clock of the master controller can be operated at a lower chop clock frequency. For every doubling of N number of chopping amplifier stages, magnitudes of chopping artifacts and aliased components are each respectively reduced by 3 dB.
摘要翻译： 公开了一种用于斩波输入信号的斩波放大器和方法。 斩波放大器和方法利用至少两个斩波放大器级。 输入信号的斩波操作跨越两个或更多个斩波放大器级分段，并且两个或更多个斩波放大器级对主控制器做出响应。 斩波放大器级的斩波时钟信号交错，使得它们具有非重叠周期，并且至少一个斩波放大器级在任何给定时间都不在开环中工作。 非重叠周期是周期性的，使得主控制器的主斩波时钟可以以较低的斩波时钟频率工作。 对于N个斩波放大器级的每一倍，斩波伪影和混叠分量的大小分别降低3dB。
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公开(公告)号：US20060232331A1
公开(公告)日：2006-10-19
申请号：US11455592
申请日：2006-06-19
申请人： Karl Thompson , John Melanson , Chung-Kai Chow , Ammisetti Prasad
发明人： Karl Thompson , John Melanson , Chung-Kai Chow , Ammisetti Prasad
IPC分类号： H03F1/02
摘要： A chopping amplifier and method for chopping an input signal are disclosed. The chopping amplifier and method utilize at least two chopping amplifier stages. A chopping operation of an input signal is segmented across two or more chopping amplifier stages, and the two or more chopping amplifier stages are responsive to a master controller. Chop clock signals of the chopping amplifier stages are staggered so that they have non-overlapping periods and at least one of the chopping amplifier stages is not operating in an open loop at any given time. The non-overlapping periods are periodic so that a master chop clock of the master controller can be operated at a lower chop clock frequency. For every doubling of N number of chopping amplifier stages, magnitudes of chopping artifacts and aliased components are each respectively reduced by 3 dB.
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5.发明授权Data conversion circuits and methods with input clock signal frequency detection and master mode output clock signal generation 有权数据转换电路和方法具有输入时钟信号频率检测和主模式输出时钟信号的产生公开(公告)号：US06667704B1
公开(公告)日：2003-12-23
申请号：US10281715
申请日：2002-10-28
IPC分类号： H03M100
CPC分类号： H04J3/0685 , H04J3/0688
摘要： A data converter includes first and second input signal paths receiving an input signal having an input frequency, the first input signal path dividing the input frequency by a first divisor and the second input signal path dividing the input frequency by a second divisor, the second divisor being greater than the first divisor. A selector selects between an output of the first input signal path and an output from the second input signal path in response to a state of a control signal. Control circuitry monitors a selector output signal frequency and a current state of the control signal and selectively resets the state of the control signal to set the selector output frequency to a desired frequency.
摘要翻译： 数据转换器包括接收具有输入频率的输入信号的第一和第二输入信号路径，第一输入信号路径将输入频率除以第一除数，第二输入信号路径将输入频率除以第二除数，第二除数 大于第一个除数。 选择器响应于控制信号的状态，在第一输入信号路径的输出和来自第二输入信号路径的输出之间进行选择。 控制电路监视选择器输出信号频率和控制信号的当前状态，并选择性地复位控制信号的状态，以将选择器输出频率设置到期望的频率。
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公开(公告)号：US08022683B2
公开(公告)日：2011-09-20
申请号：US12165547
申请日：2008-06-30
申请人： Karl Thompson , John L. Melanson , John Paulos , Mauro Gaetano
发明人： Karl Thompson , John L. Melanson , John Paulos , Mauro Gaetano
IPC分类号： G05F1/56
CPC分类号： H02M3/158 , H02M2001/0006 , Y10S323/901
摘要： A power control system and method senses input and/or output voltages of a power supply using sense currents in order for an integrated circuit (IC) switch state controller to generate a control signal to control a switch of the power control system. By sensing sense currents, the power control system can eliminate at least one sense resistor used in a voltage sense system. The sense current(s) can be used to provide power and sensing to the switch state controller. In at least one embodiment, the sense current(s) provide power to the switch state controller when auxiliary IC power is unavailable or diminished, such as during start-up of the IC. In at least one embodiment, the IC draws more sense current from an input of the power control system than the output of the power control system to, for example, minimize impact on the output voltage of the power supply.
摘要翻译： 功率控制系统和方法使用感测电流来感测电源的输入和/或输出电压，以便集成电路（IC）开关状态控制器产生控制信号以控制功率控制系统的开关。 通过感测感测电流，功率控制系统可以消除在电压感测系统中使用的至少一个感测电阻器。 感测电流可用于向开关状态控制器提供功率和感测。 在至少一个实施例中，当辅助IC功率不可用或减小时，诸如在IC启动期间，感测电流向开关状态控制器提供电力。 在至少一个实施例中，IC比功率控制系统的输出从功率控制系统的输入端吸取更多的感测电流，以例如最小化对电源的输出电压的影响。
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公开(公告)号：US20090190379A1
公开(公告)日：2009-07-30
申请号：US12242298
申请日：2008-09-30
申请人： John L Melanson , Mauro L. Gaetano , Karl Thompson
发明人： John L Melanson , Mauro L. Gaetano , Karl Thompson
IPC分类号： H02M3/335
CPC分类号： H02M3/156 , H02M2001/0006 , Y10S323/901
摘要： A boosted auxiliary winding power supply for a switched-power converter circuit provides operating voltage for control and other circuits early in the start-up phase of converter operation. A boost circuit has an input coupled to the auxiliary winding to boost the voltage available from the auxiliary winding at least during start-up of the switched-power converter. The boost thereby provides a voltage that is greater than the voltage across the auxiliary winding during start-up of the switched-power converter. The boost circuit may be actively switched at a rate higher than a switching rate of the switched-power converter, to increase a rate of rise of the operating voltage. Polarity information, which may be provided from the switched-power converter control circuit, can be used to actively rectify the output of the auxiliary winding.
摘要翻译： 用于开关电源转换器电路的升压辅助绕组电源在转换器运行的启动阶段的早期提供控制和其他电路的工作电压。 升压电路具有耦合到辅助绕组的输入，以至少在开关功率转换器的启动期间升高从辅助绕组可用的电压。 因此，在开关功率转换器的启动期间，升压提供大于辅助绕组上的电压的电压。 升压电路可以以高于开关功率转换器的开关速率的速率主动切换，以增加工作电压的上升速率。 可以从开关电源转换器控制电路提供的极性信息可用于主动地校正辅助绕组的输出。
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8.发明授权公开(公告)号：US08576589B2
公开(公告)日：2013-11-05
申请号：US12165556
申请日：2008-06-30
申请人： John L. Melanson , Karl Thompson , Kartik Nanda , Mauro Gaetano
发明人： John L. Melanson , Karl Thompson , Kartik Nanda , Mauro Gaetano
IPC分类号： H02M1/36
CPC分类号： H02J7/0054 , H02J2007/0059 , H02M3/33592 , Y02B40/90 , Y02B70/1475
摘要： A power supply system and method includes a switch state controller that is operational to control a switching power converter during certain power loss conditions that cause conventional switch state controllers to have diminished or no functionality. In at least one embodiment, during certain power loss conditions, such as when an auxiliary power supply is in standby mode or when the switching power converter is not operating, a power supply for the switch state controller does not provide sufficient operating power to the switch state controller during certain power loss conditions. In at least one embodiment, during such power loss conditions power is generated for the switch state controller using sense input and/or sense output currents of the switching power converter to allow an integrated circuit (IC) switch state controller to generate a control signal to control a switch of the switching power converter.
摘要翻译： 电源系统和方法包括开关状态控制器，该开关状态控制器在导致常规开关状态控制器已经减小或没有功能的某些功率损耗条件下可操作以控制开关功率转换器。 在至少一个实施例中，在某些功率损耗状态下，例如当辅助电源处于待机模式时或者当开关电源转换器不工作时，开关状态控制器的电源不能向开关提供足够的工作电力 在某些功率损耗条件下状态控制器。 在至少一个实施例中，在这种功率损耗状态期间，使用开关功率转换器的感测输入和/或感测输出电流为开关状态控制器产生功率，以允许集成电路（IC）开关状态控制器产生控制信号 控制开关电源转换器的开关。
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公开(公告)号：US20090190384A1
公开(公告)日：2009-07-30
申请号：US12165547
申请日：2008-06-30
申请人： Karl Thompson , John L. Melanson , John Paulos , Mauro Gaetano
发明人： Karl Thompson , John L. Melanson , John Paulos , Mauro Gaetano
IPC分类号： H02M7/00
CPC分类号： H02M3/158 , H02M2001/0006 , Y10S323/901
摘要： A power control system and method senses input and/or output voltages of a power supply using sense currents in order for an integrated circuit (IC) switch state controller to generate a control signal to control a switch of the power control system. By sensing sense currents, the power control system can eliminate at least one sense resistor used in a voltage sense system. The sense current(s) can be used to provide power and sensing to the switch state controller. In at least one embodiment, the sense current(s) provide power to the switch state controller when auxiliary IC power is unavailable or diminished, such as during start-up of the IC. In at least one embodiment, the IC draws more sense current from an input of the power control system than the output of the power control system to, for example, minimize impact on the output voltage of the power supply.
摘要翻译： 功率控制系统和方法使用感测电流来感测电源的输入和/或输出电压，以便集成电路（IC）开关状态控制器产生控制信号以控制功率控制系统的开关。 通过感测感测电流，功率控制系统可以消除在电压感测系统中使用的至少一个感测电阻器。 感测电流可用于向开关状态控制器提供功率和感测。 在至少一个实施例中，当辅助IC功率不可用或减小时，诸如在IC启动期间，感测电流向开关状态控制器提供电力。 在至少一个实施例中，IC比功率控制系统的输出从功率控制系统的输入端吸取更多的感测电流，以例如最小化对电源的输出电压的影响。
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10.发明申请公开(公告)号：US20090189579A1
公开(公告)日：2009-07-30
申请号：US12165556
申请日：2008-06-30
申请人： John L. Melanson , Karl Thompson , Kartik Nanda , Mauro Gaetano
发明人： John L. Melanson , Karl Thompson , Kartik Nanda , Mauro Gaetano
IPC分类号： H02M3/156
CPC分类号： H02J7/0054 , H02J2007/0059 , H02M3/33592 , Y02B40/90 , Y02B70/1475
摘要： A power supply system and method includes a switch state controller that is operational to control a switching power converter during certain power loss conditions that cause conventional switch state controllers to have diminished or no functionality. In at least one embodiment, during certain power loss conditions, such as when an auxiliary power supply is in standby mode or when the switching power converter is not operating, a power supply for the switch state controller does not provide sufficient operating power to the switch state controller during certain power loss conditions. In at least one embodiment, during such power loss conditions power is generated for the switch state controller using sense input and/or sense output currents of the switching power converter to allow an integrated circuit (IC) switch state controller to generate a control signal to control a switch of the switching power converter.
摘要翻译： 电源系统和方法包括开关状态控制器，该开关状态控制器在导致常规开关状态控制器已经减小或没有功能的某些功率损耗条件下可操作以控制开关功率转换器。 在至少一个实施例中，在某些功率损耗状态下，例如当辅助电源处于待机模式时或者当开关电源转换器不工作时，开关状态控制器的电源不能向开关提供足够的工作电力 在某些功率损耗条件下状态控制器。 在至少一个实施例中，在这种功率损耗状态期间，使用开关功率转换器的感测输入和/或感测输出电流为开关状态控制器产生功率，以允许集成电路（IC）开关状态控制器产生控制信号 控制开关电源转换器的开关。
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