-
公开(公告)号：US11662757B2
公开(公告)日：2023-05-30
申请号：US17207478
申请日：2021-03-19
Applicant: QUALCOMM Incorporated
Inventor： Marko Koski , Edgar Marti-Arbona , Gordon Lee , Anish Muttreja , Ravi Jenkal
CPC classification number: G05F1/5735 , G05F1/562 , H02M1/0009 , H02M1/0025
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.
-
公开(公告)号：US09946278B2
公开(公告)日：2018-04-17
申请号：US14720385
申请日：2015-05-22
Applicant: Advanced Micro Devices, Inc.
Inventor： Miguel Rodriguez , Stephen Victor Kosonocky , Ravinder Reddy Rachala
Abstract: A processor system includes first and second regulators for regulating an adjusted supply voltage. In one embodiment, the regulator system comprises a digital low-dropout (DLDO) control system comprising first and second regulators that generate a plurality of control signals to regulate an adjusted power supply voltage and that generate a charge when a droop level falls below a droop threshold value. The first regulator implements a first control loop and the second regulator implements a second and much faster acting control loop. A supply adjustment block with the two regulators and control loops are provided for each processor core allowing different cores to have different regulated supply levels all based on one common supply.
-
公开(公告)号：US09753476B1
公开(公告)日：2017-09-05
申请号：US15099491
申请日：2016-04-14
Applicant: SanDisk Technologies Inc.
Inventor： Hemant Shukla , Saurabh Kumar Singh
Abstract: A voltage regulator circuit is provided in which voltage overshoots are quickly dissipated using a discharge path which is connected to an output of the voltage regulator. Circuitry for controlling the discharge path is provided using internal currents of an error amplifier to provide a space-efficient and power-efficient design with a fast response. Moreover, hysteresis can be provided to avoid toggling between discharge and no discharge, and to avoid undershoot when discharging the output. A digital or analog signal is set which turns the discharge transistor on or off. A current pulldown may be arranged in the discharge path.
-
公开(公告)号：US09729051B2
公开(公告)日：2017-08-08
申请号：US14976959
申请日：2015-12-21
Applicant: FUJITSU LIMITED
Inventor： Hong Gao , Hiroyuki Nakamoto
CPC classification number: H02M3/1563 , G05F1/562 , H02M2001/0025
Abstract: A power control circuit includes: a differential voltage monitor configured to monitor a differential voltage between a first voltage and a second voltage, and control a switching element to be turned on and off, wherein the differential voltage monitor controls the switching element in such a manner that in a case where the differential voltage is increased, when the differential voltage is lower than a first reference voltage, the switching element is turned off, and when the differential voltage is equal to or higher than the first reference voltage, the switching element is turned on, and in a case where the differential voltage is decreased, when the differential voltage is higher than a second reference voltage, the switching element is turned on, and when the differential voltage is equal to or lower than the second reference voltage, the switching element is turned off.
-
公开(公告)号：US09400515B2
公开(公告)日：2016-07-26
申请号：US14575287
申请日：2014-12-18
Applicant: Seiko Instruments Inc.
Inventor： Tsutomu Tomioka , Masakazu Sugiura
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的发生。 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时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。
-
Patent Agency Ranking
公开(公告)号：US09235222B2
公开(公告)日：2016-01-12
申请号：US13896035
申请日：2013-05-16
Applicant: RF Micro Devices, Inc.
Inventor： Wonseok Oh , Hyuntae Kim , Praveen Nadimpalli
Abstract: A hybrid voltage regulator includes a shunt circuit, a shunt feedback circuit, a pass circuit, and a bias controller. The bias controller is configured to control the pass circuit. The hybrid voltage regulator may also include a current source. This hybrid voltage regulator reduces current consumption at low load conditions (improving power efficiency and battery life, particularly for CMOS based regulators), and also provides wideband power supply rejection and fast transient response.
Abstract translation: 混合电压调节器包括分流电路，分流反馈电路，通路电路和偏置控制器。 偏置控制器被配置为控制通过电路。 混合电压调节器还可以包括电流源。 该混合电压调节器在低负载条件下降低了电流消耗（提高功率效率和电池寿命，特别是对于基于CMOS的稳压器），并且还提供宽带电源抑制和快速瞬态响应。
-
公开(公告)号：US20150378377A1
公开(公告)日：2015-12-31
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 comprises 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 comprises 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。
-
公开(公告)号：US20150205313A1
公开(公告)日：2015-07-23
申请号：US14591415
申请日：2015-01-07
Applicant: Seiko Instrument Inc.
Inventor： Tsutomu TOMIOKA
IPC: G05F1/56
Abstract: Provided is a voltage regulator including a clamp circuit capable of protecting a gate of an output transistor without limiting a drivability of the output transistor. The voltage regulator includes a level shift circuit having an input terminal connected to the gate of the output transistor and an output terminal connected to an input of the clamp circuit. The clamp circuit is controlled by an output voltage of the level shift circuit.
Abstract translation: 提供一种电压调节器，其包括能够保护输出晶体管的栅极而不限制输出晶体管的驱动能力的钳位电路。 电压调节器包括电平移位电路，其具有连接到输出晶体管的栅极的输入端子和连接到钳位电路的输入端的输出端子。 钳位电路由电平移位电路的输出电压控制。
-
59.发明授权Temperature and process independent exponential voltage-to-current converter circuit 有权温度和工艺独立的指数电压 - 电流转换器电路公开(公告)号：US06369618B1
公开(公告)日：2002-04-09
申请号：US09490652
申请日：2000-01-24
Applicant: Bryan E. Bloodworth , Davy H. Choi , Mehedi Hassan
Inventor： Bryan E. Bloodworth , Davy H. Choi , Mehedi Hassan
IPC: H02M1100
CPC classification number: G05F1/562
Abstract: A voltage to current conversion circuit is described. The circuit comprises a first differential amplifier for receiving an input voltage and producing an output voltage, and a second amplifier for converting the output voltage of the first amplifier to a current. The transfer function of the voltage to current conversion circuit is proportional to an exponential function that depends on the input voltage. The circuit is temperature and process independent. In a first preferred embodiment, the first amplifier comprises a first transistor for receiving an input voltage at its base terminal, a temperature dependent current source coupled to the emitter of the first transistor, and a positive voltage supply coupled to the collector through a diode coupled transistor, and a second transistor paired with the first transistor and having a base terminal coupled to an input voltage terminal, an emitter coupled to a temperature dependent current source, and a collector coupled to a voltage supply. The output voltage is a differential signal taken from the collector terminals to the second amplifier, which comprises a third transistor coupled to a fixed current source, the base terminal for receiving the voltage output of the first amplifier, and an emitter coupled to a fourth transistor's emitter, the fourth transistor receiving the output voltage of the first stage at its base terminal, and the collector providing an output terminal. A feedback circuit is coupled to the emitters of the transistors of the third and fourth circuits and to the collector of a fifth transistor, the feedback circuit providing negative feedback to limit the current available at the output when the current through the feedback circuit exceeds a predetermined limit.
Abstract translation: 描述电压 - 电流转换电路。 该电路包括用于接收输入电压并产生输出电压的第一差分放大器和用于将第一放大器的输出电压转换为电流的第二放大器。 电压到电流转换电路的传递函数与取决于输入电压的指数函数成比例。 电路是温度和工艺独立的。 在第一优选实施例中，第一放大器包括用于在其基极端接收输入电压的第一晶体管，耦合到第一晶体管的发射极的与温度相关的电流源，以及通过耦合到二极管的二极管耦合到集电极的正电压源 晶体管和与第一晶体管配对的第二晶体管，并且具有耦合到输入电压端子的基极端子，耦合到温度依赖性电流源的发射极和耦合到电压源的集电极。 输出电压是从集电极端子到第二放大器的差分信号，其包括耦合到固定电流源的第三晶体管，用于接收第一放大器的电压输出的基极端子和耦合到第四晶体管的发射极 发射极，第四晶体管在其基极端接收第一级的输出电压，集电极提供输出端。 反馈电路耦合到第三和第四电路的晶体管和第五晶体管的集电极的发射极，反馈电路提供负反馈以限制当通过反馈电路的电流超过预定值时在输出处可用的电流 限制。
-
公开(公告)号：US3958175A
公开(公告)日：1976-05-18
申请号：US533344
申请日：1974-12-16
Applicant: Arthur Rechtman Braun
Inventor： Arthur Rechtman Braun
IPC: G05F1/56 , H03K17/795 , G05F3/14
CPC classification number: G05F1/562 , H03K17/7955 , Y10S323/902 , Y10T307/773
Abstract: A current limiting switching circuit which has general application and which comprises a photoresponsive semiconductor circuit activated by a light emitting diode. A semiconductor device is included for regulating the base drive of a transistor in the photoresponsive semiconductor circuit to maintain a constant collector current flow therein.
-
-
-
-
-
-
-
-
-
Search Results
82
records
(took 0.018 seconds)
