Switched (e.g., On-off Control) Patents (Class 323/271)
  • Patent number: 10840798
    Abstract: A high-voltage power converter with a high-side switch coupled with a high-voltage input and a high-side switch control coupled with the high-side switch are presented. The high-side switch control drives the high-side switch on and off. There is a low-side switch coupled via an output node to the high-side switch. The low-side switch is on when the high-side switch is off and vice versa. A supply capacitor is coupled with a low-voltage supply terminal. The high-side switch control to provides a supply voltage for the high-side switch control. A communication module is coupled with the high-side switch control to provide a bidirectional communication between the high-side switch control and a control system that operates in a low-voltage domain, wherein the communication to and from the high-side switch control is enabled when the low-side switch is on and the high-side switch is off.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: November 17, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Nebojsa Jelaca, Horst Knoedgen, Christoph N. Nagl
  • Patent number: 10826299
    Abstract: A grid-connected inverter system having a seamless switching function. An inverter converts DC power into AC power. A breaker is connected between the inverter, a grid, and a load to switch between a grid-connected operation and an independent operation. A filter converts an output of the inverter into a sine wave. A controller operates the inverter in a current control mode or a voltage control mode. The controller operates the inverter in the current control mode for a period of time longer than a turn-off time of the breaker when an abnormality in the grid is detected, and operates the inverter in the voltage control mode when the grid is disconnected from the load due to turn-off of the breaker.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: November 3, 2020
    Assignees: ENERGYPARTNERS CO., LTD.
    Inventor: Young Cheol Shin
  • Patent number: 10826397
    Abstract: A switching power supply includes: a switching output circuit configured to generate an output voltage from an input voltage by charging a capacitor by turning on and off an output transistor; a control circuit configured to halt the driving of the switching output circuit when charging electric charge to the capacitor per switching event is limited to a lower limit value and the output voltage, or a feedback voltage commensurate therewith, is raised from a predetermined reference voltage; and a lower limit value setting circuit configured to variably control the lower limit value during the driven period of the switching output circuit. For example, the lower limit value setting circuit can increase the lower limit value with increase in the number of times of switching.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: November 3, 2020
    Assignee: Rohm Co., Ltd.
    Inventors: Seiji Takenaka, Masashi Nagasato, Tetsuo Tateishi
  • Patent number: 10816599
    Abstract: Method and apparatus to test an integrated circuit includes retrieving power distribution data relating to an integrated circuit and designating a segment that includes at least one component of the integrated circuit. A switching limit associated with the segment may be set based on the power distribution data. Processes further generate a testing pattern that includes the determined switching limit associated with the segment.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: October 27, 2020
    Assignee: International Business Machines Corporation
    Inventors: Steven M. Douskey, Raghu G. Gopalakrishnasetty, Sumit Panigrahi, Mary P. Kusko
  • Patent number: 10763851
    Abstract: A gate control circuit has a first gate controller that controls a gate voltage of a first transistor connected between a first reference voltage node and an output node on the basis of a potential difference between the first reference voltage node and a second reference voltage node, a second gate controller that controls a gate voltage of a second transistor connected between the output node and a fourth reference voltage node. and a voltage adjustment circuit that temporarily increases the potential difference between the first reference voltage node and the second reference voltage node in a first period in which the voltage of the first reference voltage node is rising from an initial voltage and a second period in which the voltage of the first reference voltage node is falling from a normal voltage.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: September 1, 2020
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventor: Yukio Tsunetsugu
  • Patent number: 10756530
    Abstract: The present overcurrent detection circuit includes: a comparative voltage generation unit that generates a comparative voltage that changes in accordance with a power supply voltage; and a comparison unit that generates a comparison result signal by comparing a drain-source voltage of a switching transistor with the comparative voltage.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: August 25, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Toshikazu Kuwano
  • Patent number: 10727745
    Abstract: A system that provides intelligent constant on-time control may include a first switch coupled to a power input; a second switch coupled to the first switch; a switching node between the first switch and the second switch, the switching node configured to be connected to an inductor and a power output; feedback paths coupled to (1) the switching node and (2) the power output, the feedback paths enabling feedback of signals from (1) the switching node, and (2) the power output; and a processor coupled to the feedback paths. The processor may be configured to control a voltage at the power output based on a combination of the signals carried by the feedback paths.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: July 28, 2020
    Assignee: Kinetic Technologies
    Inventors: Xin Zhang, Jan Nilsson, William Robert Pelletier
  • Patent number: 10720915
    Abstract: An adaptive gate driver for a driving a power MOSFET to switch is disclosed. The adaptive gate driver includes a load sense circuit to sense a current through the power MOSFET. A controller coupled to the load sense circuit compares the sensed current to a threshold to determine if the load on the power MOSFET is a normal load or a heavy load. Based on the comparison, the controller controls the gate driver to drive the power MOSFET with a first strength level when a normal load determined and at second strength level when a heavy load is determined. The driving strength in the heavy-load condition is lower than the normal-load condition and by lowering the driving strength of the gate driver during the heavy-load condition a voltage across the power MOSFET may be prevented from exceeding a threshold related to a breakdown condition during a switching period.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: July 21, 2020
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Zhiwei Liu, Marc Dagan, Xudong Huang
  • Patent number: 10715043
    Abstract: A single inductor multiple output SIMO power converter and method are presented. The converter has a single inductor and at least two output terminals which are denoted as first output terminal and second output terminal. The SIMO power converter also has a first switching element and a second switching element. The first switching element is coupled between an output terminal of the inductor and the first output terminal of the SIMO power converter. The second switching element is coupled between the output terminal of the inductor and the second output terminal of the SIMO power converter. The SIMO power converter also has a control circuit to detect an overload condition at the first output terminal, and to generate control signals for controlling the switching of the first switching element and the second switching element based on the detected overload condition.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: July 14, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Lourans Samid
  • Patent number: 10693379
    Abstract: According to an implementation, a resonant converter for short-circuit protection includes an oscillator, a short-circuit detector configured to detect a short-circuit condition in a component of the resonant converter, and a pulse width modulation (PWM) controller configured to control the oscillator in a PWM mode before short-circuit protection is triggered. The oscillator, when in the PWM mode, is configured to generate a first clock signal for driving a first power switch and a second clock signal for driving a second power switch.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: June 23, 2020
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Sangcheol Moon, Jintae Kim, Hangseok Choi
  • Patent number: 10693453
    Abstract: A power switch circuit including first and second transistors, and a control circuit is provided. A first end of the first transistor serves as an input terminal of the power switch circuit. A second end of the first transistor is coupled to a node. A control end of the first transistor receives a first control voltage. A first end of the second transistor serves as an output terminal of the power switch circuit. A second end of the second transistor is coupled to the node. A control end of the second transistor receives a second control voltage. The control circuit detects a voltage of the node to determine a type of series connection between the first and second transistors, and generates the first and second control voltages to control a turned-on state of another of the first and second transistors after turning on one of the first and second transistors.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: June 23, 2020
    Assignee: Excelliance MOS Corporation
    Inventors: Ching-Tsan Lee, Ke-Wei Wu, Pei-Ting Yang
  • Patent number: 10666137
    Abstract: An inductor conducts a first current, which is variable. A first transistor is coupled through the inductor to an output node. The first transistor alternately switches on and off in response to a voltage signal, so that the first current is: enhanced while the first transistor is switched on in response to the voltage signal; and limited while the first transistor is switched off in response to the voltage signal. A second transistor is coupled to the first transistor. The second transistor conducts a second current, which is variable. On/off switching of the second transistor is independent of the voltage signal. Control circuitry senses the second current and adjusts the voltage signal to alternately switch the first transistor on and off in response to: the sensing of the second current; and a voltage of the output node.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: May 26, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Erick Omar Torres, Harish Venkataraman, Philomena C. Brady
  • Patent number: 10658933
    Abstract: According to an implementation, a resonant converter for short-circuit protection includes an oscillator, a short-circuit detector configured to detect a short-circuit condition in a component of the resonant converter, and a pulse width modulation (PWM) controller configured to control the oscillator in a PWM mode before short-circuit protection is triggered. The oscillator, when in the PWM mode, is configured to generate a first clock signal for driving a first power switch and a second clock signal for driving a second power switch.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: May 19, 2020
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Sangcheol Moon, Jintae Kim, Hangseok Choi
  • Patent number: 10647215
    Abstract: A magnetic coil suitable for wireless power transfer comprises a layer of magnetically-permeable material and plural conductors that follow respective convoluted paths relative to the layer of magnetically-permeable material to form respective inductors. In use, the conductors have substantially equalized inductances based on the convoluted paths and interaction with the magnetically-permeable material. One way of achieving this is to place the conductors such that the overall proximity of the conductors to the layer of magnetically-permeable material along their respective lengths is substantially equal. In this way, the conductors are positioned substantially symmetrically with respect to the layer of magnetically-permeable material, such that an average distance of each individual section of the conductors proximate to the permeable layer is equal.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: May 12, 2020
    Assignee: WiTricity Corporation
    Inventors: Simon Islinger, Leandro Alberto Percebon, Nicholas Athol Keeling
  • Patent number: 10651733
    Abstract: Described is an apparatus which comprises: a low-side switch coupled to an output node for providing regulated voltage supply; and a first driver operable to cause the low-side switch to turn off when the output node rises above a first transistor threshold voltage. Described is also a voltage regulator which comprises: a signal generator to generate a pulse-width modulated (PWM) signal; a bridge having a low-side switch coupled to an output node for providing regulated voltage supply according to the PWM signal; a first driver operable to cause the low-side switch to turn off when the output node rises above a first transistor threshold voltage; and a bridge controller to provide control signals to the first driver. The voltage regulator may operate without diode clamps and its operation is self-timed. The voltage regulator also provides tolerance against process variation.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: May 12, 2020
    Assignee: INTEL CORPORATION
    Inventors: Gerhard Schrom, Mark S. Milshtein, Alexander Lyakhov
  • Patent number: 10627843
    Abstract: A low drop out, LDO, voltage regulator circuit is that includes a high gain amplifier configured to receive a current biasing signal and arranged to regulate the voltage supply signal and output a regulated voltage supply signal. A regulation adjustment circuit is operably coupled to an output of the high gain amplifier and includes a comparator configured to compare the output regulated voltage supply signal with a threshold, wherein an output of the comparator is configured to perform one of: (i) supply a dynamic current boost to the LDO current biasing signal, in response to the regulated voltage supply signal voltage dropping below the threshold; (ii) activate a dynamic current pull down circuit to reduce an over voltage output of the LDO voltage regulator circuit in response to the regulated voltage supply signal voltage exceeding the threshold.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: April 21, 2020
    Assignee: NXP B.V.
    Inventor: Jean-Robert Tourret
  • Patent number: 10630184
    Abstract: A power controller for an electrical load is disclosed. The power controller includes a power stage operable to selectively provide an output voltage to the load. An input voltage generator supplies an input voltage to the power stage. A hysteretic comparator is operable to compare a reference voltage to a feedback output voltage from the load, the feedback output voltage being at least a portion of the output voltage, and provide a hysteretic comparator output to the power stage which controls the output voltage. A synthesizing circuit is operable to generate a synthesized voltage and couple the synthesized voltage with the feedback output voltage before the feedback output voltage is compared with the reference voltage by the hysteretic comparator. Coupling of the synthesized voltage with the feedback output voltage synchronizes the hysteretic comparator output with the input voltage provided to the power stage.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: April 21, 2020
    Assignee: Enovate Medical, LLC
    Inventor: George Blakely
  • Patent number: 10615702
    Abstract: A control method of a power converter including a first stage converter and a second stage converter is provided. The first stage converter converts an input voltage into an intermediate voltage. The second stage converter converts the intermediate voltage into an output voltage to power a load. If a loading amount of the load is larger than a first threshold value, the intermediate voltage is adjusted to increase a voltage difference between the intermediate voltage and the output voltage, so that a change of the intermediate voltage is in a negative correlation with a change of the loading amount. If the loading amount is smaller than a second threshold value, the intermediate voltage remains be unchanged or the intermediate voltage is adjusted, so that the change of the intermediate voltage is in positive correlation with the change of the loading amount.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: April 7, 2020
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Yu Zhang, Haoyi Ye, Jianhong Zeng
  • Patent number: 10608544
    Abstract: A Synchronous Rectifier (SR) controller circuit includes a dead time evaluation circuit, an offset voltage controller circuit, an off threshold control circuit, and a comparator circuit. The dead time evaluation circuit produces an indication of whether a measured dead time of an SR switching device is less than a target dead time. The offset voltage controller circuit determines an offset count using the indication, an offset voltage using the offset count, and high and low saturation indicators according to the offset count. The off threshold control circuit determines a threshold count using the high and low saturation indicators and an off threshold voltage using the threshold count. The comparator circuit determines whether a measured voltage of the SR switching device is greater than a virtual off threshold voltage, the virtual off threshold voltage corresponding to the off threshold voltage minus the offset voltage.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: March 31, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Sangcheol Moon, Hangseok Choi, Chi Chen Chung, Cheng-Sung Chen
  • Patent number: 10601412
    Abstract: Disclosed examples include self-biased DLL circuits to generate a bias current signal proportional to a repetition frequency of a first signal representing continuous switching or discontinued switching operation of the DC-DC converter. The DLL circuit includes a monostable multivibrator to provide a pulse output signal in response to an edge of the first signal with a pulse duration set by a control current signal, a phase detector to provide output signals according to a phase difference between an edge of the pulse output signal and the first signal, and an output circuit to provide an output signal according to the phase detector output signals and according to an offset signal, to provide the bias current signal according to the output signal, and to provide the control current signal according to the output signal.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: March 24, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: Michael Couleur, Neil Gibson, Antonio Priego
  • Patent number: 10602575
    Abstract: The invention provides a current modulating circuit, for example for use in a driving circuit for driving a lighting load such as an LED arrangement. A current modulating element is provided in series with the lighting load, and modulates the current based on a data input signal. A feedback system controls the current modulating element, and it has a first feedback control path which uses a voltage across the current modulating element, and a second feedback control path which uses the data input signal. The voltage feedback is used to maintain the overall current equal to the current output from a driver. The difference in current is taken up by a capacitor at the output of the driver.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: March 24, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Johan-Paul Marie Gerard Linnartz, Kumar Arulandu, Aleksandar Sevo, Haimin Tao
  • Patent number: 10587192
    Abstract: A voltage reducing circuit includes a power switch circuit portion having high-side and low-side field-effect-transistors connected at a switch node. The power switch circuit portion has an on-state wherein the high-side transistor is enabled and the low-side transistor is disabled and, vice versa, an off-state. An energy storage circuit portion including an inductor connected to the switch node is arranged to provide an output voltage. A timer determines a falltime duration required for the output voltage to fall to a threshold value. A controller switches the voltage reducing circuit between a first mode of operation in which a periodic pulse width modulated drive signal is applied to the high-side and low-side field-effect-transistors; and a second mode of operation in which a pulse is applied to the high-side and low-side field-effect-transistors only if the output voltage reaches the threshold value.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: March 10, 2020
    Assignee: Nordic Semiconductor ASA
    Inventor: Samuli Antti Hallikainen
  • Patent number: 10581316
    Abstract: A semiconductor device of an embodiment includes a first diode having a first anode and a first cathode, the first anode connected to either one of first and second electrodes of a first transistor having the first and second electrodes and a first gate electrode; a first electric resistor having a first one end connected to the first cathode and a first other end connected to positive pole of a direct-current power source; a first capacitor having a second one end and a second other end connected to the first cathode; a second capacitor having a third one end connected to negative pole of the direct-current power source and a third other end connected to the second one end of the first capacitor; and a second switching element connected in parallel to the second capacitor.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 3, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kentaro Ikeda
  • Patent number: 10566177
    Abstract: Embodiments presented herein relate to a pulse control system for a substrate processing system. The pulse control system includes a power source, a system controller, and a pulse shape controller. The pulse shape controller is coupled to the power source and in communication with the system controller. The pulse shape controller includes a first switch assembly and a second switch assembly. The first switch assembly includes a first switch having a first end and a second end. The first switch is configurable between an open state and a closed state. The second switch assembly includes a second switch having a first end and a second end. The first switch is in the closed state and the second switch is in the open state. The first switch in the closed state is configured to allow a pulse supplied by the power source to transfer through the pulse shape controller.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: February 18, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Michael Stowell, Viachslav Babayan, Jingjing Liu, Zhong Qiang Hua
  • Patent number: 10564226
    Abstract: A diagnostic system for a DC-DC voltage converter having a high voltage switch, a low voltage switch, and a DC-DC voltage converter control circuit is provided. The system includes first and second tri-state buffer ICs and a microcontroller. The first tri-state buffer IC receives a first shutdown indicator voltage from the DC-DC voltage converter control circuit indicating that a first plurality of FET switches in a high side FET IC and a second plurality of FET switches in a low side FET IC have been transitioned to an open operational state. The first tri-state buffer IC outputs a second shutdown indicator voltage to the microcontroller that indicates that the first and second plurality of FET switches have been transitioned to the open operational state.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: February 18, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kerfegar K. Katrak, Mehdi Rexha, Chieh-Kai Chang
  • Patent number: 10554120
    Abstract: [Technical Problem] In a power conversion device for stepping up or stepping down the input voltage, when voltage converter become out of order, it is not possible to specify an IGBT element and a current sensor, which is in an extraordinary fault condition. [Solution to Problem] The power conversion device is configured to detect a voltage value of a smoothing condenser, connected in parallel to a load, where the load is to be connected to the power conversion device; detects, by a first current sensor, a current which flows through switching elements in a plurality of voltage converter; decides an abnormality of a switching element, by switching the switching element one by one; specifies the abnormality of the switching element; and specifies that the first current sensor is in an abnormal state, in a case where there is no abnormal state switching elements.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: February 4, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuhiro Fujioka, Nobuhiro Kihara, Mai Nakada, Yoshihiro Takeshima, Yujiro Nakada
  • Patent number: 10554127
    Abstract: A multi-output DC-DC converter with constant on time control. The multi-output DC-DC converter has N clock signals, and N switching circuits converting an input voltage signal to N output voltage signals respectively. The N clock signals have the same frequency and a predetermined phase shift between every two successive clock signals of the N clock signals. When the N switching circuits are operated in a steady state, each of the N switching circuits is synchronized with a corresponding one of the N clock signals.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: February 4, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventor: Junyong Gong
  • Patent number: 10528071
    Abstract: According to an embodiment of an electronic circuit, the electronic circuit includes a first input pin, a second input pin, an output pin, a control circuit and an output circuit. The first input pin is configured to receive a first input signal that includes an enable information and at least one operation parameter information. The second input pin is configured to receive a second input signal. The control circuit is configured to generate a drive signal based on the enable information included in the first input signal and the second input signal. The output circuit is configured to generate an output signal at the output pin such that a timing of the output signal is dependent on the drive signal and at least one parameter of the output signal is dependent on the at least one operation parameter information included in the first input signal.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: January 7, 2020
    Assignee: Infineon Technologies Austria AG
    Inventors: Tobias Gerber, Thomas Ferianz
  • Patent number: 10530258
    Abstract: A predictive dead time generating circuit includes a dead time detecting module configured to detect a dead time between the switching off of the upper power transistor and the switching on of the lower power transistor, and a dead time between the switching off of the lower power transistor and the switching on of the upper power transistor, and to generate a first detecting signal and a second detecting signal according to the condition of whether the detected dead time reaches an optimal value. The logic control module changes the output of the delay module according to the judgment result of the dead time detecting module, so as to change the dead time between the driving signal of the upper power transistor and the driving signal of the lower power transistor.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: January 7, 2020
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Zekun Zhou, Yunkun Wang, Yandong Yuan, Shilei Li, Zhuo Wang, Bo Zhang
  • Patent number: 10503195
    Abstract: A reference voltage generation circuit small in circuit scale and in power consumption is provided. The reference voltage generation circuit, including a stabilizing capacitor, outputting a voltage at both ends of the stabilizing capacitor as an output voltage, includes a voltage detection circuit, a reference voltage circuit, a stabilizing capacitor, a current source circuit, and a control circuit. The current source circuit generates a first current if the output voltage is lower than a detection voltage and a second current if the output voltage is higher than or equal to the detection voltage, the first current being larger than the second current. The voltage detection circuit includes one of a single transistor and transistors connected by cascode connection that is smaller in the number of stages than the cascode connection in the reference voltage circuit.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: December 10, 2019
    Assignee: ABLIC INC.
    Inventor: Minoru Sano
  • Patent number: 10498241
    Abstract: A control method of multi-phase converters, wherein the multi-phase converter includes a plurality of switching circuits coupled in parallel between an input voltage and a load. The control method includes: comparing a feedback signal with a reference signal to generate a comparison signal, wherein the feedback signal is indicative of an output voltage provided to the load; determining the number of switching circuits for power operation based on the load current; detecting a period of the comparison signal; comparing the detected period of the comparison signal with a time threshold to determine whether a transient rise of load current has occurred; and getting all the switching circuits into power operation if a transient rise of load current is detected.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 3, 2019
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Xiaokang Wu, Lijie Jiang, Binci Xu
  • Patent number: 10499340
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine, using a real-time clock (RTC) included in a microcontroller, that a modem module is to exit a power saving mode; instruct a load switch to connect the modem module to a battery of the UE based at least in part on the determination; and instruct the modem module to exit the power saving mode based at least in part on the determination. Numerous other aspects are provided.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: December 3, 2019
    Assignee: Qualcomm Incorporated
    Inventors: Lijun Lin, Vieri Vanghi, Liangchi Hsu
  • Patent number: 10491105
    Abstract: A power converter and a dead-time controller for a power converter. The power converter includes a first power switching element through which an input voltage is applied, a second power switching element connected to the first power switching element through a switching node, an output circuit coupled to the switching node, a control switching element configured to control the first power switching element and the second power switching element through a first control node connected to the first power switching element and a second control node connected to the second power switching element, and a control assist unit configured to control the control switching element on the basis of voltages of the switching node and the first control node or voltages of the switching node and the second control node.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: November 26, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young Kyun Cho, Myung Don Kim, Seok Bong Hyun
  • Patent number: 10476387
    Abstract: A switch frequency control apparatus comprises a timer coupled between a bias voltage and ground, wherein the timer comprises a first input configured to receive a ramp, a second input configured to receive a threshold voltage and an output configured to be connected to an input of a PWM circuit, wherein the output of the timer is used for setting either a constant on-time or a constant off-time of a power converter and a threshold generator coupled between the bias voltage and ground, wherein the threshold generator is configured to receive a plurality of control signals of the power converter and generate the threshold voltage based upon a duty cycle of the power converter.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: November 12, 2019
    Assignee: M3 Technology Inc.
    Inventors: Xiaoyu Xi, Bo Yang, Lou Nuo
  • Patent number: 10476372
    Abstract: A method comprises detecting an input voltage and an output voltage of a buck-boost converter, wherein the buck-boost converter comprises a first high-side switch and a first low-side switch connected in series across an input capacitor, a second high-side switch and a second low-side switch connected in series across an output capacitor and an inductor coupled between a common node of the first high-side switch and the first low-side switch, and a common node of the second high-side switch and the second low-side switch and configuring the buck-boost converter such that at least one of the first high-side switch and second low-side switch operates at a fixed duty cycle mode.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: November 12, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Heping Dai, Liming Ye, Jinbo Huang, Dianbo Fu
  • Patent number: 10468973
    Abstract: An over current protecting circuit, used with a switching converter having a switch, having: a current limiting circuit, configured to receive a limit indicating signal and to provide an on time signal to control an on time period of the switch based on the limit indicating signal, wherein if the limit indicating signal indicates a current flowing through the switch of the switching converter is larger than a limiting threshold, the on time period of a next switching cycle of the switch is subtracted with a first period, otherwise, the on time period of the switch of the next switching cycle is added with a second period; wherein a maximum on time period of the switch is fixed to be an on time reference.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: November 5, 2019
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Xiaokang Wu, Qian Ouyang, Yu Zhang, Xiaogang Wei
  • Patent number: 10467869
    Abstract: An apparatus, such as a haptic-enabled device, and a method for providing boost protection logic are presented. The method comprises receiving, by a control circuit of the apparatus, a nonzero drive signal to be used by the haptic actuator to generate a haptic effect. The control circuit causes a first portion of the nonzero drive signal to be applied to the haptic actuator in a boost mode. The control circuit detects a boost duration exceeding a first defined time threshold, such as a boost timeout threshold, or detects an accumulated boost time exceeding the first defined time threshold. In response, the control circuit causes a second portion of the nonzero drive signal to be applied to the haptic actuator in an amplitude-limited mode.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: November 5, 2019
    Assignee: IMMERSION CORPORATION
    Inventors: Henry Da Costa, Kaniyalal Shah, Andry Rabemiarisoa, Liwen Wu
  • Patent number: 10469068
    Abstract: An adaptive gate driver for a driving a power MOSFET to switch is disclosed. The adaptive gate driver includes a load sense circuit to sense a current through the power MOSFET. A controller coupled to the load sense circuit compares the sensed current to a threshold to determine if the load on the power MOSFET is a normal load or a heavy load. Based on the comparison, the controller controls the gate driver to drive the power MOSFET with a first strength level when a normal load determined and at second strength level when a heavy load is determined. The driving strength in the heavy-load condition is lower than the normal-load condition and by lowering the driving strength of the gate driver during the heavy-load condition a voltage across the power MOSFET may be prevented from exceeding a threshold related to a breakdown condition during a switching period.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: November 5, 2019
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Zhiwei Liu, Marc Dagan, Xudong Huang
  • Patent number: 10468989
    Abstract: A switching regulator includes a switching element, a first error amplification circuit amplifying a difference between a voltage based on an output voltage and a first reference voltage and providing a first error voltage, a clamp circuit generating a second error voltage at an output node based on the first error voltage and a second reference voltage, a PFM comparison circuit comparing the second error voltage and the second reference voltage to output a comparison result, an oscillation circuit providing and stopping a clock signal according to the comparison result, and a PWM conversion circuit turning on/off the switching element based on the second error voltage and the output of the oscillation circuit. The clamp circuit clamps a lower limit value of the second error voltage to a voltage obtained by subtracting a prescribed voltage from the second reference voltage.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: November 5, 2019
    Assignee: ABLIC INC.
    Inventor: Kosuke Takada
  • Patent number: 10455512
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine, using a real-time clock (RTC) included in a microcontroller, that a modem module is to exit a power saving mode; instruct a load switch to connect the modem module to a battery of the UE based at least in part on the determination; and instruct the modem module to exit the power saving mode based at least in part on the determination. Numerous other aspects are provided.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: October 22, 2019
    Assignee: Qualcomm Incorporated
    Inventors: Lijun Lin, Vieri Vanghi, Liangchi Hsu
  • Patent number: 10447082
    Abstract: A wireless power transmitter circuit includes a power inverter circuit, a resonant transmitter circuit and a control circuit. The power inverter circuit converts a DC power to an AC output power which includes an AC output current. The resonant transmitter circuit, including a variable capacitor circuit, converts the AC output power to a resonant wireless power which includes a resonant current. The control circuit generates an impedance control signal according to a resonant current related signal and a current reference signal, for controlling the impedance of the variable capacitor circuit to regulate the resonant current or the AC output current substantially at a predetermined current level.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: October 15, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventor: Kuo-Chi Liu
  • Patent number: 10447162
    Abstract: A switching power supply circuit, which keeps an output voltage constant highly accurately by a buck-boost action, is provided. The switching power supply circuit comprises: a switching circuit formed by combining four switching elements with a coil in the shape of H; a coil current emulation circuit for generating an output voltage VC similar to a coil current; and a control circuit which, based on a feedback voltage representing an output voltage VO of the switching circuit, and the output voltage VC, performs on-off control of the switching circuit. The coil current emulation circuit has a CR integration circuit to generate the output voltage VC similar to the coil current. One of three voltages is applied to one terminal of the CR integration circuit, while a voltage proportional to the output voltage VO is applied to the other terminal of the CR integration circuit.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: October 15, 2019
    Assignee: Torex Semiconductor Ltd.
    Inventor: Takashi Matsumoto
  • Patent number: 10447164
    Abstract: An object of the present invention is to provide a power supply voltage stabilizing method that can suppress the performance of a switching power supply from being deteriorated even when a battery voltage varies and/or load conditions change. In a power supply voltage stabilizing method of a switching power supply including an output power MOS to which a battery voltage is supplied and a PWM feedback control unit that controls the output power MOS, the PWM feedback control unit includes a voltage feedback controller that controls on the basis of a power supply voltage output from the switching power supply and a current feedback controller that controls on the basis of a current output from the switching power supply. A variation in the battery voltage and/or a change in the load condition of the switching power supply are/is detected, and the bandwidth of the PWM feedback control unit is dynamically changed in accordance with the result of the detection.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: October 15, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Masayuki Ida
  • Patent number: 10432131
    Abstract: There are provided the same number of inverter modules as the number of phases of a motor, and an inverter control unit that generates PWM signals used to drive the inverter modules in PWM. Three phase outputs from each of the inverter modules are coupled to form a phase output signal for one phase of the motor while capacitors are mounted between control GNDs of the inverter modules and power GNDs of the inverter modules. Consequently, even if a surge voltage is generated in a GND wiring at the time of a switching operation of switching elements in the inverter modules, the application of the surge voltage to the switching elements can be suppressed.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: October 1, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Norikazu Ito, Katsuhiko Saito, Shigeo Umehara, Katsuyuki Amano, Masahiro Fukuda
  • Patent number: 10429873
    Abstract: The present disclosure relates to the field of intelligent wearable technologies, and provides a power supply circuit, a power supply circuit generation method, and a power supply circuit control method. The present disclosure provides a power supply circuit, including: a bandgap voltage reference Bandgap, a real-time detection and control module, and an alternate voltage source module, where the real-time detection and control module adjusts an output point voltage of the alternate voltage source module according to an output voltage of the Bandgap; and when the output point voltage of the alternate voltage source module reaches a target voltage, the real-time detection and control module closes the Bandgap and supplies power by using the alternate voltage source module.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: October 1, 2019
    Assignees: SEMICONDUCTOR MANF. INTL. (SHANGHAI) Corp., SEMICONDUCTOR MANF. INTL. (BEIJING) Corp.
    Inventors: Teng Ye Wang, Chia Chi Yang, Zhi Bing Deng, Xian Lei Zhang
  • Patent number: 10425096
    Abstract: An apparatus having an analog-to-digital converter with an increased effective resolution is disclosed. The apparatus includes a signal processing functional block and an analog-to-digital conversion block. The signal processing functional block includes a controller for providing a set of digital control signals according to a set of digital input signals received by the controller, a digital-to-analog converter for converting the digital control signals to a set of corresponding analog control signals, and a physical hardware unit for performing a specific function according to the analog control signals. The analog-to-digital conversion block includes an adder for adding a dither signal to an analog feedback signal originated from the physical hardware unit, an ADC for converting sums of dither signals and analog feedback signals to a set of oversampled digital control signals to be fed into the controller.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: September 24, 2019
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: David A. Haessig, Jr., Amod V. Dandawate, David C. Donarski, Dale A. Rickard, Forrest C. Vatter
  • Patent number: 10411698
    Abstract: An apparatus that includes a first device connected to an inductor. The first device includes a first silicon carbide (SiC) junction gate field-effect transistor (JFET), a first SiC schottky barrier diode (SBD) connected to a gate and a drain of the first SiC JFET, and a first silicon (Si) transistor connected to transmit current to a source of the first SiC JFET. An inductor input terminal is connected to the drain of the first SiC JFET.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: September 10, 2019
    Assignee: RENESAS ELECTRONICS AMERICA INC.
    Inventors: Tetsuo Sato, Koichi Yamazaki
  • Patent number: 10411581
    Abstract: A switching power conversion apparatus includes: a multi-level power stage, a PWM control circuit, a multi-level driver circuit, a bootstrap capacitor control circuit and a driving power control circuit. The bootstrap capacitor control circuit includes bootstrap capacitor control switches. During a charging period, a bootstrap control signal controls the bootstrap capacitor control switches, to electrically connect a second bootstrap node to the ground voltage level, whereby the supply voltage charges the bootstrap capacitor via the bootstrap diode. During a pumping period, the bootstrap control signal controls the bootstrap capacitor control switches to electrically connect the second bootstrap node to one of the upper-gate nodes or the switching node, whereby the voltage of the first bootstrap node is pumped to a corresponding pumping voltage level.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: September 10, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Wei-Jen Huang, Shun-Yu Huang
  • Patent number: 10411604
    Abstract: System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes a first controller terminal and a second controller terminal. Additionally, the system controller is configured to receive an input signal at the first controller terminal, and generate a drive signal at the second controller terminal based at least in part on the input signal to turn on or off a transistor in order to affect a current associated with a secondary winding of the power conversion system. Moreover, the system controller is further configured to determine whether the input signal is larger than a first threshold at a first time, in response to the input signal being determined to be larger than the first threshold at the first time, determine whether the input signal is smaller than a second threshold at a second time.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 10, 2019
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Yaming Cao, Zhenglan Xia, Yuan Lin, Qiang Luo, Lieyi Fang
  • Patent number: 10411605
    Abstract: System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes a first controller terminal and a second controller terminal. Additionally, the system controller is configured to receive an input signal at the first controller terminal, and generate a drive signal at the second controller terminal based at least in part on the input signal to turn on or off a transistor in order to affect a current associated with a secondary winding of the power conversion system. Moreover, the system controller is further configured to determine whether the input signal is larger than a first threshold at a first time, in response to the input signal being determined to be larger than the first threshold at the first time, determine whether the input signal is smaller than a second threshold at a second time.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: September 10, 2019
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Yaming Cao, Zhenglan Xia, Yuan Lin, Qiang Luo, Lieyi Fang