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公开(公告)号：US20140152388A1
公开(公告)日：2014-06-05
申请号：US14174553
申请日：2014-02-06
Applicant: WOLFSON MICROELECTRONICS PLC
Inventor： John P. Lesso , John L. Pennock , Peter J. Frith
CPC classification number: H02M3/07 , H03F1/025 , H03F3/185 , H03F3/187 , H03F3/68 , H03F2200/507 , H03F2200/511 , H03G1/0017 , H03G1/0029 , H03G1/0088 , H03G1/0094
Abstract: A signal amplifying circuit and associated methods and apparatuses, the circuit comprising: a signal path extending from an input terminal to an output terminal, a gain controller arranged to control the gain applied along the signal path in response to a control signal; an output stage within the signal path for generating the output signal, the output stage having a gain that is substantially independent of its supply voltage, and a variable voltage power supply comprising a charge pump for providing positive and negative output voltages, the charge pump comprising a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of the states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage.
Abstract translation: 一种信号放大电路及相关的方法和装置，所述电路包括：从输入端延伸到输出端的信号路径;增益控制器，被配置为响应于控制信号控制沿着信号路径施加的增益; 用于产生输出信号的信号路径内的输出级，输出级具有基本上与其电源电压无关的增益;以及可变电压电源，包括用于提供正和负输出电压的电荷泵，所述电荷泵包括 可操作于多个不同状态的开关网络和用于以一系列状态操作开关的控制器，以便将跨越大致等于输入电压的电压产生正和负输出电压。
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公开(公告)号：US09306448B2
公开(公告)日：2016-04-05
申请号：US14174553
申请日：2014-02-06
Applicant: Wolfson Microelectronics plc
Inventor： John P. Lesso , John L. Pennock , Peter J. Frith
CPC classification number: H02M3/07 , H03F1/025 , H03F3/185 , H03F3/187 , H03F3/68 , H03F2200/507 , H03F2200/511 , H03G1/0017 , H03G1/0029 , H03G1/0088 , H03G1/0094
Abstract: A signal amplifying circuit and associated methods and apparatuses, the circuit comprising: a signal path extending from an input terminal to an output terminal, a gain controller arranged to control the gain applied along the signal path in response to a control signal; an output stage within the signal path for generating the output signal, the output stage having a gain that is substantially independent of its supply voltage, and a variable voltage power supply comprising a charge pump for providing positive and negative output voltages, the charge pump comprising a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of the states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage.
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公开(公告)号：US09236794B2
公开(公告)日：2016-01-12
申请号：US13854707
申请日：2013-04-01
Applicant: Wolfson Microelectronics plc
Inventor： John P. Lesso
IPC: H02M3/07
CPC classification number: H02M3/07 , H02M2003/072
Abstract: A charge pump circuit, and associated method and apparatuses, for providing a split-rail voltage supply, the circuit having a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of said states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage and centered on the voltage at the common terminal.
Abstract translation: 一种电荷泵电路及相关的方法和装置，用于提供分路电压电源，所述电路具有可在多个不同状态下操作的开关网络和用于以所述状态的顺序操作所述开关的控制器 以将正和负输出电压一起产生，跨越大约等于输入电压的电压并以公共端的电压为中心。
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公开(公告)号：US20130314151A1
公开(公告)日：2013-11-28
申请号：US13854707
申请日：2013-04-01
Applicant: Wolfson Microelectronics Plc
Inventor： John P. Lesso
IPC: H02M3/07
CPC classification number: H02M3/07 , H02M2003/072
Abstract: A charge pump circuit, and associated method and apparatuses, for providing a split-rail voltage supply, the circuit having a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of said states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage and centered on the voltage at the common terminal.
Abstract translation: 一种电荷泵电路及相关的方法和装置，用于提供分路电压电源，所述电路具有可在多个不同状态下操作的开关网络和用于以所述状态的顺序操作所述开关的控制器 以将正和负输出电压一起产生，跨越大约等于输入电压的电压并以公共端的电压为中心。
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