Switched (e.g., On-off Control) Patents (Class 323/271)
  • Patent number: 11183860
    Abstract: System and method for discharging a capacitor. An example system includes a signal detector and a discharge control component. The signal detector is configured to receive an input signal and generate a detection signal based on at least information associated with the input signal, the input signal being associated with an alternate current signal received by a capacitor including a first capacitor terminal and a second capacitor terminal. The discharge control component configured to receive at least the detection signal and generate an output signal to discharge the capacitor if the detection signal satisfies one or more conditions.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: November 23, 2021
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Miao Li, Lieyi Fang
  • Patent number: 11177737
    Abstract: In a described example, a circuit includes a mode control circuit having an input and a mode control output. The mode control output is adapted to be coupled to a mode input of a DC-to-DC power converter. The mode control circuit is configured to provide a mode control signal at the mode control output. The mode control signal has a frequency and a duty cycle for causing the power converter to operate within an inaudible frequency range by transitioning the power converter between a power save mode and a pulse width modulation (PWM) mode. The mode control circuit is configured to control the duty cycle responsive to the input of the mode control circuit.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: November 16, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Brigitte Hauke, Milos Acanski, Christian Schmoeller
  • Patent number: 11172556
    Abstract: A light emitting element drive device generates a single output current while switching a target current value for each of a plurality of light emitting elements, and supplies the single output current to the plurality of light emitting elements in a time division manner.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 9, 2021
    Assignee: Rohm Co., Ltd.
    Inventors: Akira Aoki, Ryo Takagi, Masaaki Nakayama
  • Patent number: 11146186
    Abstract: The invention concerns a circuit for recuperating electrical energy from a mechanical resonator (402) comprising: a voltage inversion circuit (408) configured to invert the voltage across a capacitance (Cp) of the mechanical resonator, the voltage inversion circuit comprising: a capacitor (Cint); and a charge transfer circuit configured: to discharge a voltage of a first polarity held by the capacitance of the mechanical resonator to said capacitor during a first period; and to charge a voltage, of opposite polarity to the first polarity, to the capacitance of the mechanical resonator during a second period using the voltage potential stored by said capacitor during the first period; wherein the charge transfer circuit comprises an inductance and at least one switch controllable to limit the current passing through the inductance.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: October 12, 2021
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Adrien Morel, Gaël Pillonnet, Yohan Wanderoild
  • Patent number: 11128224
    Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed for adaptive synchronous rectifier control. An example apparatus includes an adaptive off-time control circuit to determine a first voltage and a second voltage when a drain voltage of a switch satisfies a voltage threshold, the first voltage based on a first off-time of the switch, the second voltage based on the first off-time and a first scaling factor, determine a third voltage based on a second scaling factor and a second off-time of the switch, the second off-time after the first off-time, and determine a third off-time of the switch based on at least one of the second voltage or the third voltage. The example apparatus further includes a driver to turn off the switch for at least the third off-time after the second off-time.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: September 21, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Bharath Balaji Kannan, Bing Lu
  • Patent number: 11099624
    Abstract: A sensor device includes an image sensing array, a frame buffer, a first read line, a second read line and an energy accumulator. The image sensing array is configured to sense reflected light from a working surface and includes a plurality of sensing pixels and a plurality of self-powered pixels. The sensing pixels respectively output image data according to the sensed reflected light. The self-powered pixels respectively output photocurrent according to the sensed reflected light. The first read line is coupled between the sensing pixels and the frame buffer. The second read line is coupled between the self-powered pixels and the frame buffer. The energy accumulator stores electrical energy of the photocurrent via a charge path between the self-powered pixels and the energy accumulator.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: August 24, 2021
    Assignee: PIXART IMAGING INC.
    Inventor: Guo-Zhen Wang
  • Patent number: 11101734
    Abstract: A multi-level buck converter includes an input power source, an input capacitor, first to fourth switches, a clamp capacitor, an output inductor, a clamp switch, a clamp diode, an output capacitor, an output load, a current detection circuit, a voltage detection circuit and a control circuit. The current detection circuit detects whether an inductor current of the output inductor exceeds a predetermined current value, and if so, the output clamp signal controls the clamp switch to be turned on. The voltage detection circuit generates a duty cycle control signal according to an error between an output voltage and a target output voltage. The control circuit controls the first to the fourth switches to sequentially enter a first mode, a second mode, a third mode, and a fourth mode in a first part of a duty cycle.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: August 24, 2021
    Assignee: NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Jing-Yuan Lin, Jun-Ru Wang, Pin-Hsien Liu, Huang-Jen Chiu
  • Patent number: 11095225
    Abstract: A control method for a power supply apparatus is provided. Firstly, at least one of an output voltage or an output current of the resonant converter is sampled. Then, an error signal is generated according to a reference value and at least one of the output voltage or the output current. While the resonant converter is in a burst mode, a first switching signal and a chopping signal are generated according to the error signal. The chopping signal has a chopping period and a duty cycle. The chopping period and the duty cycle are dynamically adjusted according to the error signal. Then, a second switching signal is generated according to the chopping signal and the first switching signal. A switch unit of the resonant converter is turned on or turned off according to the second switching signal.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: August 17, 2021
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Kailiang Zhan, Xiaobing Rong, Xinwei Liu
  • Patent number: 11095214
    Abstract: A startup circuit initializes a voltage of a capacitor of a switch-capacitor regulator. The startup circuit includes a voltage forming circuit and a control unit. The voltage forming circuit selectively electrically connected to the top and the bottom of the capacitor. In a first operation phase, the voltage forming circuit is electrically connected to the top and bottom of the capacitor, and the top and bottom of the capacitor are connected to each other, and the voltages of the top and bottom are set as a preset high voltage. In a second operation phase, the voltage forming circuit disconnects the top and the bottom, and generates current flowing out from the bottom of the capacitor until the voltage cross the capacitor is equal to the preset initial voltage. In the third operation phase, the startup circuit is disconnected from the capacitor.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: August 17, 2021
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventors: Yeh-Tai Hung, Chung Ming Hsieh, Chung-He Li
  • Patent number: 11088620
    Abstract: A multi-level switching power converter includes a string of N upper transistors and a string of N lower transistors, where N is an integer greater than one. The N upper transistors are electrically coupled in series between a first power node and a switching node, and the N lower transistors are electrically coupled in series between the switching node and a reference node. The multi-level switching power converter further includes N?1 flying capacitors, an inductor, a bypass transistor, and a controller. The bypass transistor is electrically coupled between the switching node and the reference node. The controller is configured to (a) control switching of the N upper transistors and the N lower transistors and (b) cause the bypass transistor to operate in its on state in response to all of the N lower transistors operating in their respective on states.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: August 10, 2021
    Assignee: MAXIM INTEGRATED PRODUCTS, INC.
    Inventors: Cory B. Arnold, Ilija Jergovic
  • Patent number: 11082038
    Abstract: In one aspect, a circuit includes a gate driver having a first input connected to a first node and a second input connected to a second node; an epi diode connected to the first node; a switch connected to the first node; a capacitor having a top plate connected to the switch and a bottom plate connected to the second node; and a first clamp connected the first node and to the second node. The switch being open isolates the first node from negative transient effects from the top plate of the capacitor.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: August 3, 2021
    Assignee: Allegro MicroSystems, LLC
    Inventors: Thomas Ross, James McIntosh, Gianluca Allegrini
  • Patent number: 11073853
    Abstract: A power supply includes a voltage regulator, a transistor, a current-to-voltage transform circuit, and a comparator. The voltage regulator receives a control signal, a source voltage, and a control voltage, and outputs a supply voltage according to the control voltage and the control signal. The transistor has a first terminal receiving the source voltage, and a control terminal coupled to the voltage regulator. The current-to-voltage transform circuit has a first terminal coupled to a second terminal of the transistor, a second terminal for receiving a reference voltage. The comparator has a first input terminal for receiving a comparison signal, a second input terminal coupled to the first terminal of the current-to-voltage transform circuit, and an output terminal for outputting the control voltage.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 27, 2021
    Assignee: RichWave Technology Corp.
    Inventors: Chih-Sheng Chen, Chia-Jung Yeh
  • Patent number: 11063435
    Abstract: An adaptive stability control system includes a direct current (DC) bus and one or more distributed controllers. The DC bus is configured to provide bidirectional pulsed power flow and energy storage. The distributed controller is configured to continuously measure an impedance of the DC bus and execute at least one adaptive control algorithm to regulate impedance of the DC bus to maintain stability of the bidirectional pulsed power flow and energy storage.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: July 13, 2021
    Assignees: RAYTHEON COMPANY, UTAH STATE UNIVERSITY
    Inventors: Boris S. Jacobson, David H. Altman, Charles P. Scheffler, Regan A. Zane
  • Patent number: 11057031
    Abstract: Methods and devices to address start up of half-bridge circuits including D-mode power FETs are disclosed. The disclosed devices overcome possible issues of output overload or excess current through gate-source of power FETs during start up. Methods and devices based on monitoring coupling capacitors voltages and pre-charging such coupling capacitors using current sources are also described. The current sources can be implemented using negative voltages provided by negative voltage sources such as charge pumps.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: July 6, 2021
    Assignee: PSEMI CORPORATION
    Inventors: Arezu Bagheri, Buddhika Abesingha, Ronald E. Reedy
  • Patent number: 11057030
    Abstract: Methods and devices to address start up of half-bridge circuits including D-mode power FETs are disclosed. The disclosed devices overcome possible issues of output overload or excess current through gate-source of power FETs during start up. Voltage monitoring is used to address the issue of output overload and pre-charging of coupling capacitors are described as solutions to uncontrolled pre-charging of coupling capacitors. Pre-charging of coupling capacitors are implemented using current sources.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: July 6, 2021
    Assignee: PSEMI CORPORATION
    Inventors: Arezu Bagheri, Buddhika Abesingha
  • Patent number: 11043802
    Abstract: A shutdown apparatus for a photovoltaic module is provided. Only one first switch is connected in series in an output circuit of the photovoltaic module, and a controller controls the first switch to be switched on in a normal power generation state and controls the first switch to be switched off in a shutdown state. If a short circuit fault occurs in the first switch, the controller controls a second switch connected in parallel with the photovoltaic module to be switched on, thereby causing the output of the photovoltaic module short-circuited and ensuring a reliable shutdown. In addition, the second switch is in the shutdown state when the photovoltaic module normally provides output, and the second switch does not cause losses to the output of the photovoltaic module, such that it is not necessary to select a device with a low impedance.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: June 22, 2021
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Zongjun Yang, Yanfei Yu, Hua Ni
  • Patent number: 11043891
    Abstract: Described is a controller for an AC to DC or a DC to AC multi-phase power converter of a type having N power converter phases, where N is greater or equal to 2. The controller comprises a control module configured to change or vary a phase shift angle of the input current or output current for each of the N power converter phases such that an average phase shift value for each of said N power converter phases over a control module AC line cycle is about, near or substantially the same value. In an embodiment of an AC/DC or a DC/AC multi-phase power converter of a type having N power converter phases arranged in parallel, an advantage of arranging the average phase shift value for each power converter phase to be substantially equal or about equal over an AC line cycle is that it reduces or eliminates any imbalances in the input currents or output currents of the N power converter phases.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: June 22, 2021
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Sui Pung Cheung, Qing Chun Li, Xin Li, Tin Ho Li
  • Patent number: 11038425
    Abstract: The present embodiments relate generally to power controllers, and more particularly to synthetic current hysteretic control of a buck-boost DC-DC controller. In one or more embodiments, a controller includes PFM-PWM and Buck-Boost transitions with minimal circuitry and power consumption. In these and other embodiments, the controller includes a low-Iq synthetic ripple generator for use in implementing hysteretic control of a buck-boost controller.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: June 15, 2021
    Assignee: Renesas Electronics America Inc.
    Inventor: Gwilym Francis Luff
  • Patent number: 11025182
    Abstract: A signal processing apparatus includes a processor, a memory storing a program, and an integration circuit that performs filter processing on an input signal to output a processed signal. The processor samples an output signal output from the integration circuit in a sampling period Ts and stores a sampled value of the output signal in accordance with the program, and detects a duty of the input signal based on a difference between a value of the output signal at a time t0 representing a present time point and a sampled value of the output signal obtained at a time t0?n representing an earlier time than the time t0 by an n sampling period when n is a positive integer, the value of the output signal, a value of the integer n, the sampling period Ts, and a time constant of a filter of the integration circuit.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: June 1, 2021
    Assignee: NIDEC CORPORATION
    Inventor: Hideyuki Takemoto
  • Patent number: 11011984
    Abstract: A circuit includes a power stage circuit configured to perform power conversion of an input voltage to provide an output voltage at an output. The circuit further includes a driver circuit configured to drive the power stage circuit to provide the output voltage. The circuit further includes a load transient dynamic compensator configured to detect a rate of change in the output voltage during load transient and to supply a compensating signal based on the rate of change. The circuit further includes a feedback control circuit configured to generate a series of pulses to control the driver circuit based on the output voltage and the compensating signal.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: May 18, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Yueming Sun
  • Patent number: 10999905
    Abstract: The present disclosure is related to accurate analog dimming of a light emitting diode (LED). Accurate dimming can require precise control of a power converter that supplies the LED with a current. The precise control relies on accurately sensing a level of the LED. When the power converter operates in a discontinuous conduction mode (DCM), for example at a low dimming ratio, the accuracy of the sensed LED-level can be affected by a resonant current offset, resulting from current ringing in the power converter. The disclosed circuits and methods provide accurate control of the LED-level by compensating for the resonant current offset in the sensed LED-level.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: May 4, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Hyunchul Eum, Gyumin Park, Minha Hwang
  • Patent number: 10996701
    Abstract: A power converter having fast transient response is provided. The power converter includes a voltage detector circuit and a compensator circuit. The voltage detector circuit includes a plurality of resistors, a plurality of comparators, and a detection control circuit. The resistors are connected in series with each other and grounded. First and second terminals of one of the resistors are respectively connected to a reference voltage and a first terminal of the adjacent resistor. First and second terminals of another of the resistors are respectively connected to a second terminal of the adjacent resistor and grounded. First input terminals of the comparators are respectively connected to second terminals of the resistors. The detection control circuit outputs control signals according to comparison signals. The compensator circuit outputs a compensating signal according to the control signals. A main control circuit controls switch circuits according to the compensating signal.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: May 4, 2021
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Tse-Hsu Wu, Fu-Chuan Chen, Yun-Chiang Chang
  • Patent number: 10992228
    Abstract: A method includes switching a switching circuit of the switched-mode power supply in a synchronous mode by turning on and off switches of the switching circuit in synchrony with a clock signal, wherein the switching circuit is coupled to an inductive element, and wherein the synchronous mode comprises a charging phase and a discharging phase; switching the switching circuit in an asynchronous mode by turning on and off switches of the switching circuit without being synchronized with the clock signal, wherein the asynchronous mode comprises a charging phase and a discharging phase; charging the inductive element during the charging phase of the synchronous mode; discharging the inductive element during the discharging phase of the synchronous mode; charging the inductive element during the charging phase of the asynchronous mode; and discharging the inductive element during the discharging phase of the asynchronous mode.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: April 27, 2021
    Assignee: STMicroelectronics (Grenoble 2) SAS
    Inventors: David Chesneau, Francois Amiard
  • Patent number: 10985656
    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) a synthesized node and (2) the power output, the feedback paths enabling feedback of signals from (1) the synthesized node, and (2) the power output; and a controller coupled to the feedback paths. The controller 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: June 22, 2020
    Date of Patent: April 20, 2021
    Assignee: Kinetic Technologies
    Inventors: Xin Zhang, Jan Nilsson, William Robert Pelletier
  • Patent number: 10969810
    Abstract: A voltage regulator and a method are presented. The regulator has a pass device coupled to an input node at an input voltage. Furthermore, the voltage regulator has a regulator circuit to control the pass device to provide a regulated output voltage at an output node based on the input voltage. Components of the regulator circuit are arranged and operated between the input node and the output node. The voltage regulator allows a load of the voltage regulator to be arranged between the output node and a reference node at a reference voltage, wherein the reference voltage differs from the output voltage.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: April 6, 2021
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Jan Grabinski, Frank Kronmueller
  • Patent number: 10972007
    Abstract: A voltage regulator circuit included in a computer system may include multiple devices and a switch node coupled to a regulated power supply node via an inductor. The voltage regulator circuit may, using different subsets of the multiple devices, charge a capacitor for a first period of time and then couple the switch node to the capacitor for a second period of time. A control circuit may sense, using a common circuit, different characteristics of a current through the inductor during respective operation modes, and adjust the first and second periods of time based on the different characteristics of the current and a current operation mode.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 6, 2021
    Assignee: Apple Inc.
    Inventors: Floyd L. Dankert, Jitendra K. Agrawal, Dingkun Du
  • Patent number: 10958079
    Abstract: In one embodiment, an energy harvesting system includes multiple-input-multiple-output switched-capacitor (MIMOSC) circuitry comprising a plurality of switched-capacitor circuit units to receive a plurality of direct current (DC) input voltages at respective input terminals of the switched-capacitor circuit unit, combine the received DC input voltages, and provide the combined DC input voltages at an output terminal of the switched-capacitor circuit unit. The energy harvesting system also includes maximum power point tracking (MPPT) circuitry coupled to switches of the switched-capacitor circuit units of the MIMOSC circuitry. The MPPT circuitry is to provide a plurality of switching signals to the switches of the switched-capacitor circuit units. The MIMOSC circuitry is to provide a plurality of DC output voltages to respective loads based on the switching signals from the MPPT circuitry.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 23, 2021
    Assignee: Intel Corporation
    Inventors: Xiaosen Liu, Khondker Z. Ahmed, Vivek K. De, Nachiket V. Desai, Suhwan Kim, Harish K. Krishnamurthy, Turbo Majumder, Krishnan Ravichandran, Christopher Schaef, Vaibhav A. Vaidya, Sriram R. Vangal
  • Patent number: 10958065
    Abstract: A switching circuit includes: a detection wiring configured to receive a potential changing depending on a current of a first switching element; a first circuit connected between the detection wiring and a first having a first time constant, and making the first wiring follow the potential of the detection wiring; a second circuit connected between the detection wiring and a second wiring, having a second time constant larger than the first time constant, and making the second wiring fellow the potential of the detection wiring; a potential maintaining circuit configured to maintain the second wiring at a potential higher than the potential of the first wiring while a current is not flow through the first switching element; and a control circuit configured to turn off the first switching element in a case where the potential of the first wiring exceeds the potential of the second wiring.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: March 23, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ken Toshiyuki
  • Patent number: 10951250
    Abstract: A DC-shifting predriver has an input port configured for coupling to a serial data stream, an inverting output amplifier having an feedback node and an output port configured for coupling to a transistor at the input to a high-speed DAC or TX driver, and a capacitor AC-coupled between the input port and the feedback node. A weak feedback inverter having structure similar to, but less drive strength than the inverting output amplifier is coupled between the output port and the feedback node to act as a positive feedback latch. The predriver provides a DC shift up to 3V with high reliability and minimal intersymbol interference for data rates from 10 GS/s to 28 GS/s or higher. The predriver may provide multiple input ports implemented as a predriver array in an M-bit system, and the output amplifier may consist of N stages.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: March 16, 2021
    Assignee: SITRUS TECHNOLOGY CORPORATION
    Inventors: Karim Vincent Abdelhalim, Michael Q. Le
  • Patent number: 10938304
    Abstract: Various embodiments provide a direct current (DC)-DC converter circuit. The DC-DC converter circuit includes a control circuit to switch the DC-DC converter circuit between a charge state, a discharge state, and a tri-state mode. As part of a first control loop, the control circuit may switch the DC-DC converter between the charge state and the discharge state based on the output voltage to provide the output voltage with the target voltage level. Additionally, as part of a second control loop, the control circuit may switch the DC-DC converter between the charge state and the discharge state based on the current through an inductor of the DC-DC converter. The second control loop may provide overcurrent protection for the DC-DC converter. Other embodiments may be described and claimed.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: March 2, 2021
    Assignee: Intel Corporation
    Inventors: David Herbison, Marc Hesener, Tobias Werth, Stefan Guenther
  • Patent number: 10931147
    Abstract: A converter comprises a first switch, a capacitor and a second switch connected in series between an input voltage source and an output filter, a third switch connected between a common node of the first switch and the capacitor, and a common node of the second switch and the output filter and a fourth switch connected between a common node of the capacitor and the second switch, and ground.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: February 23, 2021
    Assignee: NuVolta Technologies (Hefei) Co., Ltd.
    Inventors: Junxiao Chen, Jinbiao Huang, Zeng Li
  • Patent number: 10924002
    Abstract: A transient response enhancement circuit for buck-type voltage converters, wherein, the transient load changing detecting module detects the output voltage of the buck-type voltage converter. The first control signal is generated when the increase of the output voltage is detected, and the second control signal is generated when the decrease of the output voltage is detected, thereby self-adaptively detecting the time of the buck-type voltage converter in response to the load changing. The compensation voltage predicting operation module predicts and adjusts the compensation voltage and the adjusted compensation voltage is superimposed on the buck-type voltage converter through the internal active compensation module to adjust the duty ratio of the buck-type voltage converter. The drive controlling insertion logic module can further improve the response speed.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: February 16, 2021
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Zekun Zhou, Junyuan Rong, Zuao Wang, Yue Shi, Zhuo Wang, Bo Zhang
  • Patent number: 10917015
    Abstract: A multiphase operation control method comprises configuring a plurality of power phases of a power converter to operate in an interleaved manner by passing a token sequentially among the plurality of power phases, turning on a first power phase after the first power phase possesses the token and receives a trigger signal from a control circuit of the first power phase, passing the token to a second power phase after the first power phase finishes, passing the token sequentially until a last power phase of the plurality of power phases possesses the token and forwarding the token to the first power phase after the last power phase finishes.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: February 9, 2021
    Assignee: Active-Semi (BVI) Inc.
    Inventors: Narasimhan Trichy, Masashi Nogawa
  • Patent number: 10917003
    Abstract: A control circuit for a switching power converter includes a current compensator. The current compensator is configured to receive a first current reference signal, a second current reference signal and a signal representing an input current of the switching power converter, generate a first current error signal based on the signal representing the input current and the first current reference signal for controlling at least one power switch of the power converter, generate a second current error signal based on the signal representing the input current and the second current reference signal, and adjust the first current error signal based on the second current error signal to limit the amount of current flowing through the switching power converter. Other example control circuits, switching power converters including control circuits and methods for limiting current in switching power converters are also disclosed.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: February 9, 2021
    Assignee: Astec International Limited
    Inventor: Yancy Fontanilla Boncato
  • Patent number: 10901449
    Abstract: An electronic circuit includes a first input pin configured to receive a first input signal that includes an enable information and at least one operation parameter information, a second input pin configured to receive a second input signal, an output pin, a control circuit configured to generate a drive signal based on the first input signal and the second input signal, an output circuit configured to generate an output signal at the output pin, the enable information includes an enabled state and a disabled state, the control circuit is configured to generate the drive signal in the enabled state and to turn to the electronic circuit off in the disabled state, the at least one operation parameter information includes information about an operational parameter of the output signal, and the output circuit is configured to use the at least one operation parameter information to change the operational parameter of the output signal.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: January 26, 2021
    Assignee: Infineon Technologies Austria AG
    Inventors: Tobias Gerber, Thomas Ferianz
  • Patent number: 10882475
    Abstract: The disclosure relates to a control device for a motor vehicle which comprises a first electrical terminal for receiving a first supply voltage of a first vehicle electrical system and a second electrical terminal for receiving a second supply voltage of a second vehicle electrical system, the second supply voltage being smaller than the first supply voltage, wherein an electrical ground terminal is provided for closing a common ground potential of the first and second vehicle electrical systems, and a switching device connected downstream of the first terminal is set up, depending on a voltage signal which is determined by a potential difference between the second terminal and the ground terminal, to block a current flow through the first terminal, wherein the switching device interrupts the current flow if the voltage signal indicates an interruption of an electrical connection between the ground terminal and the ground potential.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: January 5, 2021
    Assignee: Audi AG
    Inventor: Richard Kaußler
  • Patent number: 10878755
    Abstract: A pixel compensating circuit comprises an organic light-emitting diode (OLED), a first transistor, a compensating transistor, a storage capacitor, a second transistor, a third transistor, and a seventh transistor. If a present-stage scan signal is at a low voltage potential, the second transistor is turned on, the gate of the first transistor and the drain of the first transistor are short-circuited. A data signal is transmitted to a source of the first transistor after the third transistor is turned on. A third reference voltage is transmitted to the source of the first transistor after the seventh transistor is turned on. An aging phenomenon and the uniformity of the driving transistor are improved.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: December 29, 2020
    Inventor: Jun Li
  • Patent number: 10855170
    Abstract: A power management integrated circuit (PMIC) is provided for extracting power from an energy harvester. The PMIC includes a voltage converter to convert an input power at a voltage Vin into an output power at an output voltage Vout_VC. The voltage converter includes, in addition to a main voltage converter circuit, a cold-start circuit for starting the voltage converter from an OFF state. The PMIC further includes an input terminal for receiving a voltage VEN-CS proportional to the converter input voltage Vin and a voltage comparator for comparing the voltage VEN-CS with a reference voltage Vref. A controller enables the cold-start circuit when VEN-CS?Vref.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: December 1, 2020
    Assignee: E-PEAS S.A.
    Inventors: Julien De Vos, Geoffroy Gosset, Cedric Hocquet
  • 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