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61. 发明授权

US09740224B2 Dynamic biasing for regulator circuits 有权
公开(公告)号：US09740224B2
公开(公告)日：2017-08-22
申请号：US14855286
申请日：2015-09-15
申请人： TRIUNE IP, LLC
发明人： Amer Atrash , Ross E. Teggatz , Brett Smith
IPC分类号： G05F3/02 , G05F1/10 , G05F1/575 , G05F1/565
CPC分类号： G05F1/575 , G05F1/565
摘要： The disclosed invention provides apparatus and methods for dynamic biasing in electronic systems and circuits. The apparatus and methods disclosed provide non-linear biasing responsive to monitored load conditions.

62. 发明授权

US09703303B2 Charge pump LDO with secondary sensing for low power need based refresh 有权
公开(公告)号：US09703303B2
公开(公告)日：2017-07-11
申请号：US14261829
申请日：2014-04-25
申请人： Miten H. Nagda , Jose A. Camarena , Dale J. McQuirk
发明人： Miten H. Nagda , Jose A. Camarena , Dale J. McQuirk
IPC分类号： G05F1/46 , H02M3/07 , G05F1/565 , H02M3/156
CPC分类号： G05F1/468 , G05F1/46 , G05F1/462 , G05F1/565 , H02M3/07
摘要： A voltage regulation system includes a voltage regulator configured to output a control signal indicating whether a voltage based on output of the voltage regulator is lower than a specified value. A charge pump is configured to output a voltage and a charging current. A pump monitor is configured to receive the control signal and the output voltage of the charge pump, and activate the charge pump when the control signal indicates the voltage based on output of the voltage regulator is lower than a specified value and the output voltage of the charge pump is lower than a threshold value.

63. 发明授权

US09696736B2 Two-terminal current limiter and apparatus thereof 有权
公开(公告)号：US09696736B2
公开(公告)日：2017-07-04
申请号：US14199704
申请日：2014-03-06
申请人： Fairchild Semiconductor Corporation
发明人： Adrian Mikolajczak
IPC分类号： H02H9/04 , G05F1/56 , G05F1/565
CPC分类号： G05F1/56 , G05F1/565
摘要： In one general aspect, an apparatus can include a load terminal, and a power source terminal. The apparatus can include a current limiter coupled to the load terminal and coupled to the power terminal. The current limiter can be configured to limit a current from the power source terminal to the load terminal using an electric field activated in response to a difference in voltage between the power source terminal and the load terminal.

64. 发明授权

US09671802B2 Voltage regulator having overshoot suppression 有权
公开(公告)号：US09671802B2
公开(公告)日：2017-06-06
申请号：US14968129
申请日：2015-12-14
申请人： Seiko Instruments Inc.
发明人： Masakazu Sugiura , Tsutomu Tomioka
IPC分类号： G05F1/56 , G05F1/565
CPC分类号： G05F1/565
摘要： Provided is a voltage regulator capable of applying an optimal overshoot suppression unit depending on states. The voltage regulator includes: an amplifier for controlling an output transistor based on a voltage obtained by amplifying a difference between a divided voltage and a reference voltage; a first overshoot suppression unit for controlling a gate voltage of the output transistor, to thereby suppress overshoot of the output voltage; a second overshoot suppression unit for controlling an operating current of the amplifier, to thereby suppress the overshoot of the output voltage; and a control circuit. The control circuit is configured to turn on the first overshoot suppression unit immediately after the voltage regulator is powered on, and turn off the first overshoot suppression unit under a state in which the output voltage is stable.

65. 发明授权

US09647448B2 System and method providing over current and over power protection for power converter 有权
公开(公告)号：US09647448B2
公开(公告)日：2017-05-09
申请号：US13900430
申请日：2013-05-22
申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
发明人： Lieyi Fang , Shifeng Zhao , Bo Li , Zhiliang Chen
IPC分类号： G05F1/00 , G05F1/565 , H02M3/335 , H02H7/12
CPC分类号： H02H7/1203 , H02H7/12
摘要： System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.

66. 发明授权

US09639108B2 Power supply circuit 有权
公开(公告)号：US09639108B2
公开(公告)日：2017-05-02
申请号：US14255053
申请日：2014-04-17
申请人： Rohm Co., Ltd.
发明人： Kiminobu Sato , Shinji Kawata
IPC分类号： G05G1/00 , G05F5/00 , G05F1/565 , G01R19/165
CPC分类号： G05F5/00 , G01R19/165 , G05F1/565
摘要： A power supply circuit 1 includes an output circuit that generates an output voltage by performing a power supply operation based on an input voltage, an output terminal to which, after start-up of the power supply operation, the output voltage is applied, and a control circuit that causes a test current to flow between the output terminal and a ground. The control circuit detects, as a test voltage, a voltage at the output terminal in a test period in which the test current is caused to flow. When the test voltage at a predetermined judgment timing is lower than a judgment voltage, the control circuit judges that an output capacitor is connected and thus enables the power supply operation.

67. 发明授权

US09552005B2 Systems and methods for estimating an output current of a power conversion circuit 有权
标题翻译：用于估计功率转换电路的输出电流的系统和方法
公开(公告)号：US09552005B2
公开(公告)日：2017-01-24
申请号：US14299619
申请日：2014-06-09
申请人： Marvell World Trade Ltd.
发明人： Wanfeng Zhang , Jianqing Lin , Shaoan Dai
IPC分类号： H02M3/156 , G05F1/565 , H02M1/00
CPC分类号： G05F1/565 , H02M3/156 , H02M2001/0009 , H05B33/0815 , Y02B20/346
摘要： A controller for a power conversion circuit that includes an inductor, a diode, and a switch. The controller includes a counter configured to determine, based on a first voltage input to the inductor, an on-time of the diode. The on-time of the diode corresponds to an amount of time that the diode is conducting a first current to a load of the power conversion circuit. A current estimation circuit configured to estimate, based on the on-time of the diode and an on-time of the switch, an output current of the power conversion circuit. The on-time of the switch corresponds to an amount of time that the switch is conducting a second current. A pulse width modulator is configured to provide, based on the estimated output current, a gate drive signal to the switch. The gate drive signal selectively transitions the switch between an on state and an off state.
摘要翻译：一种用于包括电感器，二极管和开关的功率转换电路的控制器。该控制器包括一个配置成基于输入到电感器的第一电压来确定二极管导通时间的计数器。二极管的导通时间对应于二极管对电力转换电路的负载进行第一电流的时间量。电流估计电路，被配置为基于二极管的接通时间和开关的接通时间来估计功率转换电路的输出电流。开关的导通时间对应于开关正在进行第二电流的时间量。脉冲宽度调制器被配置为基于估计的输出电流提供到开关的栅极驱动信号。栅极驱动信号选择性地在导通状态和断开状态之间转换开关。

68. 发明授权

US09531273B2 Synchronous DC-DC converters, and systems and methods of controlling same 有权
标题翻译：同步DC-DC转换器及其控制系统及方法
公开(公告)号：US09531273B2
公开(公告)日：2016-12-27
申请号：US14000794
申请日：2012-02-21
申请人： Igor Abramov
发明人： Igor Abramov
IPC分类号： G05F1/00 , G05F1/565 , H02M3/158
CPC分类号： H02M3/1588 , H02M3/156 , H02M3/157 , Y02B70/1466
摘要： A synchronous DC-DC converter (300) for converting an input voltage (Vin) into an output voltage (Vout), the converter having a continuous current operative mode (CCM) and a discontinuous current operative mode (DCM), the converter including: an active switch (302) receiving a first gate signal for turning on the active switch for a first time interval (Tq1), the first gate signal having a period (Tprd); a synchronous rectifier (304) receiving a second gate signal for turning on the synchronous rectifier for a second time interval (Tq2); and a controller (306) for determining an estimation (Tq1est) for the first time interval, and thereafter comparing the estimation (Tq1est) with the value of the first time interval (Tq1); wherein responsive to the comparison the controller (306) determines an operative mode of the converter (300) and controls the second time interval (Tq2) depending on the determined operative mode.
摘要翻译：一种用于将输入电压（Vin）转换为输出电压（Vout）的同步DC-DC转换器（300），所述转换器具有连续电流操作模式（CCM）和不连续电流操作模式（DCM），所述转换器包括：一个有效开关（302）接收第一门信号，用于接通有源开关第一时间间隔（Tq1），第一门信号具有周期（Tprd）; 接收第二时间间隔（Tq2）的同步整流器的第二栅极信号的同步整流器（304）; 以及用于确定第一时间间隔的估计（Tq1est）的控制器（306），然后将估计（Tq1est）与第一时间间隔（Tq1）的值进行比较; 其中响应于比较，控制器（306）根据所确定的操作模式确定转换器（300）的操作模式并控制第二时间间隔（Tq2）。

69. 发明授权

US09454166B2 LDO regulator with improved load transient performance for internal power supply 有权
标题翻译： LDO稳压器，内部电源具有改善的负载瞬态性能
公开(公告)号：US09454166B2
公开(公告)日：2016-09-27
申请号：US14543294
申请日：2014-11-17
申请人： STMicroelectronics (Shenzhen) R&D Co. Ltd
发明人： Yong Feng Liu
IPC分类号： G06F1/00 , G05F1/565 , G05F1/575 , G05F1/59 , G05F3/30
CPC分类号： G05F1/575 , G05F1/565 , G05F1/59 , G05F3/30
摘要： A voltage regulator includes a feedback regulation loop and a drive transistor configured to source current to a regulated output. A transient recovery circuit is coupled to the voltage regulator circuit and includes a first transistor coupled to source current into a control terminal of the drive transistor, wherein the source current is in addition to current sourced in response to operation of the feedback regulation loop. The first transistor is selectively actuated in response to a drop in voltage at the regulated output. The transient recovery circuit further includes a second transistor coupled to sink current from the regulated output. The sink current has a first non-zero magnitude in the quiescent operating mode of the regulator circuit. In response to an increase in voltage at the regulated output, the operation of the second transistor is modified to increase the sink current to a second, greater, non-zero magnitude.
摘要翻译：电压调节器包括反馈调节环路和驱动晶体管，其被配置为将电流输出到调节输出端。瞬态恢复电路耦合到电压调节器电路，并且包括耦合到源极电流到驱动晶体管的控制端的第一晶体管，其中源电流除了响应于反馈调节环的操作而产生的电流之外。第一晶体管响应于调节输出处的电压下降而选择性地致动。瞬态恢复电路还包括耦合到从调节输出吸收电流的第二晶体管。灌电流在调节器电路的静态工作模式下具有第一个非零幅值。响应于调节输出处的电压增加，第二晶体管的操作被修改以将吸收电流增加到第二，更大，非零的幅度。

70. 发明授权

US09436197B1 Adaptive opamp compensation 有权
标题翻译：自适应运算放大器补偿
公开(公告)号：US09436197B1
公开(公告)日：2016-09-06
申请号：US13857662
申请日：2013-04-05
申请人： Marvell International Ltd.
发明人： Qiang Tang , Chen Ma , Bo Wang
IPC分类号： G05F1/565 , G05F1/575
CPC分类号： G05F1/565 , G05F1/575
摘要： Aspects of the disclosure provide a circuit having an amplifier and a load current based control circuit. The amplifier is configured to detect a difference between a feedback voltage and a reference voltage, and control, based on the difference, a pass device to regulate an output voltage for supplying power to load devices. The feedback voltage is indicative of the regulated output voltage from the pass device. The load current based control circuit is configured to sense a load current output from the pass device to the load devices and generate a control signal to adjust a compensation capacitance based on the sensed load current to adjust a zero frequency of the circuit.
摘要翻译：本公开的方面提供了具有放大器和基于负载电流的控制电路的电路。放大器被配置为检测反馈电压和参考电压之间的差异，并且基于差异来控制通过装置来调节用于向负载装置供电的输出电压。反馈电压表示来自通过装置的稳压输出电压。基于负载电流的控制电路被配置为感测从通过装置输出到负载装置的负载电流，并产生控制信号，以基于所感测的负载电流来调整补偿电容，以调整电路的零频率。

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