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公开(公告)号：US20180285230A1
公开(公告)日：2018-10-04
申请号：US15477031
申请日：2017-04-01
申请人： Intel Corporation
发明人： Nikos Kaburlasos , Balaji Vembu , Josh B. Mastronarde , Altug Koker , Eric C. Samson , Abhishek R. Appu , Kiran C. Veernapu , Joydeep Ray , Vasanth Ranganathan , Sanjeev S. Jahagirdar
CPC分类号： G06F11/3058 , G05F1/10 , G05F1/571 , G06F1/3206 , G06F1/324 , G06F1/3296 , G06F11/322 , G06F11/328 , G06F11/3476
摘要： Methods and apparatus relating to techniques for power management. In an example, an apparatus comprises logic, at least partially comprising hardware logic, to generate a voltage/frequency curve for at least one of a core or a sub-core in a processor and manage an operating voltage level of the at least one of a core or a sub-core using the voltage/frequency curve. Other embodiments are also disclosed and claimed.
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公开(公告)号：US10024887B2
公开(公告)日：2018-07-17
申请号：US15245882
申请日：2016-08-24
IPC分类号： H03K17/60 , G01R19/00 , G01R15/06 , H03K17/687 , G05F1/571
摘要： Circuitry and methods for measuring the voltage at a node are disclosed. A capacitive divider is coupled to the node, wherein the capacitive divider provides a first output. A resistive divider is coupled to the node, wherein the resistive divider provides a second output.
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公开(公告)号：US09991800B2
公开(公告)日：2018-06-05
申请号：US15137683
申请日：2016-04-25
发明人： Ajay Karthik Hari , Bryan McCoy
IPC分类号： G05F1/565 , G05F1/569 , G05F1/571 , G05F1/00 , H02H7/00 , H02H9/00 , H02M3/335 , H02M1/44 , H02M1/00
CPC分类号： H02M3/33507 , H02M1/44 , H02M3/33569 , H02M2001/0003 , H02M2001/0058 , Y02B70/1491
摘要： A switched mode power supply includes an active clamp flyback converter having an input for receiving an input voltage, and an output for providing a regulated voltage, the active clamp flyback converter having a first switch for controlling a flow of current through a primary winding of a flyback transformer, and a second switch for clamping a switch node on a primary side of the flyback transformer, and a controller for controlling the first and second switches to operate the active clamp flyback converter in an active clamp flyback mode when a load current is above a first predetermined level, and for controlling the first and second switches to operate the active clamp flyback converter in a discontinuous conduction mode with a variable switching frequency when the load current is below a second predetermined level.
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公开(公告)号：US20180136681A1
公开(公告)日：2018-05-17
申请号：US15800935
申请日：2017-11-01
发明人： CHE-WEI CHANG , KAI-YIN LIU , LIANG-HUAN LEI , SHIH-HSIUNG HUANG
摘要： The present invention discloses a voltage reference buffer circuit. An embodiment of the voltage reference buffer circuit includes: a first bias generator configured to generate a first bias voltage; a second bias generator configured to generate a second bias voltage different from the first bias voltage; a first driving component coupled to a high voltage terminal, the first bias generator and a reference voltage output terminal, and configured to control a reference voltage at the reference voltage output terminal according to the first bias voltage; and a second driving component coupled to the reference voltage output terminal, the second bias generator and a low voltage terminal, and configured to control a current between the reference voltage output terminal and the second driving component according to the second bias voltage.
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公开(公告)号：US09893606B1
公开(公告)日：2018-02-13
申请号：US15622778
申请日：2017-06-14
发明人： Motoyoshi Kubouchi , Yasushi Abe
IPC分类号： G05F1/569 , G05F1/571 , H01F6/00 , H02H7/122 , H02M1/32 , H02M3/158 , H02M1/14 , H02M7/537 , H02P27/06
摘要： A three-level chopper apparatus includes a protection switch circuit that changes a current pathway through which an overvoltage is applied to a second capacitor or a first capacitor to a current pathway through which no overvoltage is applied to the second capacitor or the first capacitor when a first switch or a second switch has a failure.
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公开(公告)号：US09846445B2
公开(公告)日：2017-12-19
申请号：US15134512
申请日：2016-04-21
发明人： John M. Pigott , Valerian Mayega , Hang Fung Yip
摘要： A voltage supply regulator includes a first output resistor including a first terminal coupled to an output voltage of the voltage supply regulator and a second terminal; a first comparator including a first input coupled to a reference voltage, a second input coupled to the second terminal of the first output resistor, and an output coupled to a base of a first regulator transistor; a current mirror coupled to a collector of the first regulator transistor; and an slew rate detector coupled to the current mirror that includes a first terminal coupled to control electrodes of first and second transistors in the current mirror, and a detection bipolar junction transistor having a collector coupled to the control electrodes of the first and second transistors in the current mirror, and a base coupled to a second terminal of the capacitor.
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公开(公告)号：US09595865B2
公开(公告)日：2017-03-14
申请号：US14904296
申请日：2014-08-30
CPC分类号： H02M3/156 , H02M2001/0009 , H02M2001/0058 , Y02B70/1491
摘要： In various examples, a converter unit for converting an input voltage to an output voltage is disclosed. The converter includes input terminals for connecting the converter unit to a voltage supply and for receiving the input voltage from the voltage supply and output terminals for connecting the converter unit to a load for driving the load. A controllable switch is connected to an inductor. The converter unit further includes a current detector for detecting a current of the inductor, a voltage slope detector for detecting a slope of a voltage measured across the controllable switch, and a control unit for controlling the controllable switch on the basis of the inductor current and the voltage slope.
摘要翻译： 在各种示例中，公开了用于将输入电压转换为输出电压的转换器单元。 转换器包括用于将转换器单元连接到电压源并用于接收来自用于将转换器单元连接到用于驱动负载的负载的电压源和输出端子的输入电压的输入端子。 可控开关连接到电感器。 转换器单元还包括用于检测电感器电流的电流检测器，用于检测在可控开关上测量的电压的斜率的电压斜率检测器，以及用于基于电感器电流控制可控开关的控制单元，以及 电压斜率。
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公开(公告)号：US09588540B2
公开(公告)日：2017-03-07
申请号：US14850947
申请日：2015-09-10
发明人： Zhengxiang Wang , Jie Jin
摘要： A voltage regulator generates an output voltage that is a designed voltage level below the supply voltage. A reference voltage generator generates a reference voltage between ground and supply voltages. A voltage divider generates a feedback voltage between the supply and output voltages. An amplifier generates an amplifier output voltage based on a difference between the reference and feedback voltages. A buffer buffers the amplifier output voltage. A pass transistor receives the buffered voltage at its control node to sink an average load current appearing at the output node. A capacitor is connected between the supply and output voltages to provide a peak load current. A load-current-detecting transistor receives the buffered voltage at its control node to sense the load current. A compensation transistor compensates for leakage current. An internal load converts the sensed load current into a voltage control signal applied to the compensation transistor.
摘要翻译： 电压调节器产生低于电源电压的设计电压电平的输出电压。 参考电压发生器产生接地和电源电压之间的参考电压。 分压器产生电源和输出电压之间的反馈电压。 放大器基于参考电压和反馈电压之间的差产生放大器输出电压。 缓冲器缓冲放大器的输出电压。 传输晶体管在其控制节点处接收缓冲电压以吸收出现在输出节点处的平均负载电流。 在电源和输出电压之间连接电容器以提供峰值负载电流。 负载电流检测晶体管在其控制节点处接收缓冲电压以感测负载电流。 补偿晶体管补偿漏电流。 内部负载将检测到的负载电流转换成施加到补偿晶体管的电压控制信号。
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公开(公告)号：US09354648B2
公开(公告)日：2016-05-31
申请号：US14197045
申请日：2014-03-04
发明人： Hiroshi Yajima , Hideyuki Kihara , Takahiro Uehara
摘要： A constant-voltage circuit having an overcurrent protection circuit which includes: a first sense transistor, one main terminal connected to an input terminal of the constant-voltage circuit and a control terminal connected to a control terminal of an output transistor generates a current corresponding to an output current from the output transistor; a voltage level adjusting circuit configured to generate a voltage corresponding to a voltage of a main terminal of the output transistor at an output terminal side of the constant-voltage circuit by extracting a current that is not affected by a change in the output current from the output transistor, and adjust a voltage of another main terminal of the first sense transistor such that the adjusted voltage becomes equal to the generated voltage; and a protection circuit to control a control voltage applied from an error amplifier to the control terminal of the output transistor.
摘要翻译： 一种具有过电流保护电路的恒压电路，包括：第一感测晶体管，连接到恒压电路的输入端的一个主端子和连接到输出晶体管的控制端的控制端产生对应于 来自输出晶体管的输出电流; 电压电平调整电路，被配置为通过提取不受来自所述恒定电压电路的输出电流的变化影响的电流来产生与所述恒压电路的输出端侧的输出晶体管的主端子的电压相对应的电压 输出晶体管，并且调节所述第一感测晶体管的另一个主端子的电压，使得调节的电压变得等于所产生的电压; 以及保护电路，用于控制从误差放大器施加到输出晶体管的控制端的控制电压。
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公开(公告)号：US09252652B2
公开(公告)日：2016-02-02
申请号：US13313952
申请日：2011-12-07
申请人： Michael Gasperi
发明人： Michael Gasperi
CPC分类号： H02M1/10 , H02M7/2176
摘要： A wide input voltage power supply circuit for a load includes a first stage and a second stage. The first stage includes a linear regulator circuit configured to maintain an output voltage at a predetermined output voltage level. The linear regulator includes an input for shutting the linear regulator off when an input voltage exceeds a predetermined shut off threshold. The second stage includes a high voltage detection circuit coupled to the input of the linear regulator. The high voltage detection circuit is configured to detect the level of the input voltage and to shut the linear regulator off when the input voltage exceeds the predetermined shut off threshold. An under voltage lockout circuit may be included, the under voltage lockout circuit configured to set a minimum turn-on voltage for the load.
摘要翻译： 用于负载的宽输入电压电源电路包括第一级和第二级。 第一级包括线性稳压器电路，其被配置为将输出电压保持在预定的输出电压电平。 线性调节器包括用于当输入电压超过预定关闭阈值时关闭线性调节器的输入。 第二级包括耦合到线性调节器的输入的高电压检测电路。 高电压检测电路被配置为检测输入电压的电平并且当输入电压超过预定的关断阈值时关闭线性调节器。 可以包括欠压锁定电路，欠压锁定电路被配置为设置负载的最小导通电压。
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