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公开(公告)号：US11906995B2
公开(公告)日：2024-02-20
申请号：US17836417
申请日：2022-06-09
Applicant: STMicroelectronics S.r.l.
Inventor： Daniele Mangano , Francesco Clerici , Pasquale Butta'
Abstract: A voltage regulator coupled between a first node and second node includes a first (full-power) regulator circuit and a second (low-power) regulator circuit. In a first mode: the first regulator circuit is activated (with the second regulator circuit inactive) when the voltage at the first node is a battery voltage, and the voltage regulator is kept de-activated when the voltage at the first node is a ground voltage. In a second mode: the first regulator circuitry in is active (with the second regulator circuitry inactive) when the voltage at the first node is a battery voltage, and the voltage regulator is inactive when the voltage at the first node is a ground voltage. In a third mode: the second regulator circuitry is active (with the first regulator circuitry inactive) irrespective of the voltage at the first node being at the battery voltage or the ground voltage.
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公开(公告)号：US20230251678A1
公开(公告)日：2023-08-10
申请号：US18302734
申请日：2023-04-18
Applicant: QUALCOMM Incorporated
Inventor： Marko KOSKI , Edgar MARTI-ARBONA , Gordon LEE , Anish MUTTREJA , Ravi JENKAL
CPC classification number: G05F1/5735 , G05F1/562 , H02M1/0025 , H02M1/0009
Abstract: A method and apparatuses for power regulation using an extended current limit are disclosed. The power regulator detects an occurrence of an output current of the regulator exceeding a first current limit, triggers an extended current limit timer based on the detected occurrence, regulates the output current according to a second current limit higher than the first current limit based on a duration of the extended current limit timer, and regulates the output current according to the first current limit based on an expiration of the duration of the extended current limit timer.
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公开(公告)号：US20180081383A1
公开(公告)日：2018-03-22
申请号：US15825253
申请日：2017-11-29
Applicant: Dialog Semiconductor (UK) Limited
Inventor： Hande Kurnaz , Ambreesh Bhattad , Frank Kronmueller
Abstract: A regulator for providing a load current at a regulator output voltage to a load at an output of the regulator is described. The regulator has a differential input stage to provide a differential output voltage based on a reference voltage and based on the regulator output voltage. Furthermore, the regulator has an output driver to generate a control signal based on the differential output voltage. In addition, the regulator has a pass transistor to provide the load current in dependence of the control signal. The regulator also has clamping circuitry to sense an overvoltage indication which indicates that the pass transistor is being turned off. Furthermore, the clamping circuitry clamps the differential output voltage to a clamping voltage, if the overvoltage indication indicates that the pass transistor is being turned off.
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公开(公告)号：US09864386B2
公开(公告)日：2018-01-09
申请号：US15090716
申请日：2016-04-05
Applicant: Dialog Semiconductor (UK) Limited
Inventor： Hande Kurnaz , Ambreesh Bhattad , Frank Kronmueller
Abstract: A regulator for providing a load current at a regulator output voltage to a load at an output of the regulator is described. The regulator has a differential input stage to provide a differential output voltage based on a reference voltage and based on the regulator output voltage. Furthermore, the regulator has an output driver to generate a control signal based on the differential output voltage. In addition, the regulator has a pass transistor to provide the load current in dependence of the control signal. The regulator also has clamping circuitry to sense an overvoltage indication which indicates that the pass transistor is being turned off. Furthermore, the clamping circuitry clamps the differential output voltage to a clamping voltage, if the overvoltage indication indicates that the pass transistor is being turned off.
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公开(公告)号：US09798340B2
公开(公告)日：2017-10-24
申请号：US14521765
申请日：2014-10-23
Applicant: Dialog Semiconductor GmbH
Inventor： Ambreesh Bhattad , Frank Kronmueller
CPC classification number: G05F1/56 , G05F1/562 , G05F1/569 , G05F1/573 , G05F1/5735 , H02H9/001 , H02M1/36
Abstract: A circuit is provided with inrush current protection through control of the output current at start-up by a current source that does not rely on the output capacitor and which provides a smooth transition from a controlled current mode during a start-up phase to a voltage regulation mode.
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公开(公告)号：US20170269619A1
公开(公告)日：2017-09-21
申请号：US15356993
申请日：2016-11-21
Applicant: Dialog Semiconductor (UK) Limited
Inventor： Dan Ciomaga , Mihail Jefremow , Stephan Drebinger , Fabio Rigoni
IPC: G05F1/575
Abstract: This application relates to a circuit for generating an output voltage and regulating the output voltage to a target voltage. The circuit includes a switchable voltage divider circuit configured to generate a feedback voltage that is a variable fraction of the output voltage, an error amplifier stage configured to generate a control voltage on the basis of a reference voltage and the variable fraction of the output voltage, a buffer stage configured to generate the output voltage on the basis of the control voltage, and a charge injection circuit configured to inject charge at an intermediate node between the error amplifier stage and the buffer stage to thereby modify the control voltage generated by the error amplifier stage. The application further relates to a method of operating such circuit.
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公开(公告)号：US09564888B2
公开(公告)日：2017-02-07
申请号：US14710253
申请日：2015-05-12
Applicant: SK hynix Inc.
Inventor： Hyun Ju Ham , Kee Teok Park , Hyung Sik Won
CPC classification number: H03K17/223 , G05F1/46 , G05F1/465 , G05F1/56 , G05F1/562 , G05F1/575 , G05F3/02 , G05F3/16
Abstract: A voltage generation apparatus may include an external voltage sensing circuit configured to generate a first start signal and a second start signal by sensing the magnitude of a first external voltage and the magnitude of a second external voltage. The voltage generation apparatus may include an internal voltage sensing circuit configured to generate a voltage generation signal by comparing an internal voltage with a target voltage. The voltage generation apparatus may include a voltage pumping circuit configured to be activated in response to the first start signal, configured to perform a pumping operation based on the voltage generation signal, and configured to generate the internal voltage. The voltage generation apparatus may include a voltage regulating circuit configured to be activated in response to the first and second start signals, and configured to generate the internal voltage based on the voltage generation signal.
Abstract translation: 电压产生装置可以包括外部电压感测电路，其被配置为通过感测第一外部电压的大小和第二外部电压的大小来产生第一起始信号和第二起始信号。 电压产生装置可以包括内部电压感测电路，其被配置为通过将内部电压与目标电压进行比较来产生电压产生信号。 电压产生装置可以包括被配置为响应于第一启动信号被激活的电压泵浦电路，被配置为基于电压产生信号执行泵送操作，并且被配置为产生内部电压。 电压产生装置可以包括电压调节电路，配置为响应于第一和第二启动信号被激活，并且被配置为基于电压产生信号产生内部电压。
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公开(公告)号：US20160085251A1
公开(公告)日：2016-03-24
申请号：US14494744
申请日：2014-09-24
Applicant: Rohm Co., Ltd.
Inventor： Hironori Sumitomo
IPC: G05F1/575
CPC classification number: G05F1/575 , G05F1/462 , G05F1/468 , G05F1/562 , G05F1/563 , G05F1/565 , G05F1/567 , G05F1/61 , G05F1/614 , H02M3/155 , H02M3/156 , H02M2001/0009 , H02M2001/0045 , H02M2001/007
Abstract: A power supply device has an output portion that generates an output voltage from an input voltage and supplies the output voltage to a load, an output feedback controller that drives the output portion by performing output feedback control, and a first detector that detects, by means of an electromagnetic induction method, a change in a first monitoring target current due to a load change. The output feedback controller reflects a detection result from the first detector into the output feedback control.
Abstract translation: 电源装置具有从输入电压产生输出电压并将输出电压提供给负载的输出部分，通过执行输出反馈控制来驱动输出部分的输出反馈控制器，以及通过装置检测输出部分的第一检测器 的电磁感应方法，由于负载变化引起的第一监视目标电流的变化。 输出反馈控制器将来自第一检测器的检测结果反映到输出反馈控制中。
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公开(公告)号：US09207696B1
公开(公告)日：2015-12-08
申请号：US14547264
申请日：2014-11-19
Applicant: Dialog Semiconductor GmbH
Inventor： Frank Kronmueller , Ambreesh Bhattad
IPC: G05F1/56
CPC classification number: G05F1/563 , G05F1/468 , G05F1/56 , G05F1/562 , G05F1/571 , H03F3/3027 , H03F3/45273 , H03F3/68 , H03F2200/129 , H03F2200/153 , H03F2200/474 , H03F2200/78 , H03F2203/45116
Abstract: Multi-stage amplifiers, such as linear regulators, configured to provide a constant output voltage subject to load transients, are described. The multi-stage amplifier includes a first amplification stage which activates or deactivates a first output stage in response to an input voltage at an input node. The first output stage is configured to source a current at an output node of the multi-stage amplifier from a high potential, when activated. Furthermore, the multi-stage amplifier includes a second amplification stage configured to activate or to deactivate a second output stage in response to the input voltage at the input node. The second output stage is configured to sink a current at the output node of the multi-stage amplifier to a low potential, when activated. The first amplification stage and the second amplification stage are configured to activate the first output stage and the Second output stage in a mutually exclusive manner.
Abstract translation: 描述了被配置为提供受负载瞬变影响的恒定输出电压的多级放大器，例如线性稳压器。 多级放大器包括第一放大级，其响应于输入节点处的输入电压激活或去激活第一输出级。 第一输出级被配置为当激活时从多电平放大器的输出节点处的电流源于高电位。 此外，多级放大器包括第二放大级，其被配置为响应于输入节点处的输入电压来激活或去激活第二输出级。 第二输出级被配置为当激活时将多级放大器的输出节点处的电流吸收到低电位。 第一放大级和第二放大级被配置为以相互排斥的方式激活第一输出级和第二输出级。
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公开(公告)号：US20150188423A1
公开(公告)日：2015-07-02
申请号：US14575287
申请日：2014-12-18
Applicant: Seiko Instruments Inc.
Inventor： Tsutomu TOMIOKA , Masakazu SUGIURA
IPC: H02M3/156
Abstract: A voltage regulator is provided which can suppress an occurrence of overshooting in an output voltage at the time of starting a power source with a source voltage or the like. The voltage regulator includes an error amplifier circuit, an overshooting control circuit that is connected to the gate of an output transistor, and an ON/OFF circuit that controls ON and OFF states of at least the error amplifier circuit. Here, the ON/OFF circuit controls the overshooting control circuit so as to turn on the output transistor when a predetermined time passes after at least the error amplifier circuit is turned on at the time of starting the voltage regulator.
Abstract translation: 提供了一种电压调节器，其可以抑制在用电源电压等启动电源时的输出电压中的过冲发生。 电压调节器包括误差放大器电路，连接到输出晶体管的栅极的过冲控制电路和控制至少误差放大器电路的导通和截止状态的ON / OFF电路。 这里，ON / OFF电路控制过冲控制电路，以便在启动电压调节器之后至少在误差放大器电路接通之后经过预定时间后接通输出晶体管。
