Switched (e.g., Switching Regulators) Patents (Class 323/282)
  • Patent number: 10998035
    Abstract: Methods, systems, and devices for power-efficient generation of voltage are described. A driver circuit in a memory device may produce a voltage on an output node for other components in the memory device to use. To produce the voltage, the driver circuit may use a first voltage supply to charge the output node to a first threshold voltage level. The driver may then use a second voltage source to charge the output node to a second threshold voltage level that is different than (e.g., higher than) the first threshold voltage level.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: May 4, 2021
    Assignee: Micron Technology, Inc.
    Inventor: Simon J. Lovett
  • Patent number: 10996284
    Abstract: This application provides a noise generation circuit, a self-checking circuit, an AFCI, and a photovoltaic power generation system. The noise generation circuit includes a power switch module, a noise generator, and a capacitor, where the noise generator is connected to both the power switch module and the capacitor; the power switch module is configured to control, according to a self-checking instruction, whether the noise generator generates a noise signal; and the capacitor is configured to filter out a direct current component in the noise signal when the noise generator generates the noise signal. According to the noise generation circuit, the self-checking circuit, the AFCI, and the photovoltaic power generation system that are provided in this application, no noise signal is generated in a non self-checking time, thereby ensuring normal working of the AFCI and the photovoltaic inverter.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: May 4, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Shengjie Zhang, Jintao Han
  • Patent number: 10992231
    Abstract: A controller includes a first timer for setting a turn-on time of a first high-side switch of a buck-boost converter, wherein the turn-on time of the first high-side switch is determined by an input voltage of the buck-boost converter, an output voltage of the buck-boost converter and a first predetermined bias voltage, a second timer for setting a turn-on time of a second low-side switch of the buck-boost converter, wherein the turn-on time of the second low-side switch is determined by the input voltage of the buck-boost converter, the output voltage of the buck-boost converter and a second predetermined bias voltage, and a valley current mode control device for setting a turn-on time of a first low-side switch and a turn-on time of a second high-side switch of the buck-boost converter.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: April 27, 2021
    Assignee: M3 Technology Inc.
    Inventors: Bo Yang, Xiaoyu Xi, David Meng
  • Patent number: 10992151
    Abstract: Power management techniques are disclosed. For instance, an apparatus may include a bidirectional voltage converter circuit, and a control module that selectively operates the bidirectional voltage converter circuit in a charging mode and a delivery mode. The charging mode converts a voltage provided by an interface (e.g., a USB interface) into a charging voltage employed by an energy storage module (e.g., a rechargeable battery). Conversely, the delivery mode converts a voltage provided by the energy storage module into a voltage employed by the interface. Other embodiments are described and claimed.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: April 27, 2021
    Assignee: Intel Corporation
    Inventor: Don J. Nguyen
  • Patent number: 10986709
    Abstract: A load control device for regulating an average magnitude of a load current conducted through an electrical load may operate in different modes. The load control device may comprise a control circuit configured to activate an inverter circuit during an active state period and deactivate the inverter circuit during an inactive state period. In one mode, the control circuit may adjust the average magnitude of the load current by adjusting the inactive state period while keeping the active state period constant. In another mode, the control circuit may adjust the average magnitude of the load current by adjusting the active state period while keeping the inactive state period constant. In yet another mode, the control circuit may keep a duty cycle of the inverter circuit constant and regulate the average magnitude of the load current by adjusting a target load current conducted through the electrical load.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: April 20, 2021
    Assignee: Lutron Technology Company LLC
    Inventor: Steven J. Kober
  • Patent number: 10985660
    Abstract: The present invention provides a DC-DC converter, wherein the DC-DC converter includes a controller, a first switch, a second switch, an inductor and a ripple signal generator. The controller is configured to generate an up signal and a down signal according to an output signal and a ripple signal. The first switch is coupled between an input voltage and a first node, and is controlled by the up signal. The second switch is coupled between the first node and a reference voltage, and is controlled by the down signal. The inductor is coupled between the first node and an output node, and is configured to receive a first signal from the first node to generate the output signal at the output node. The ripple signal generator is configured to generate the ripple signal, and reset the ripple signal every cycle to a specific voltage.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: April 20, 2021
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Tun-Shih Chen, Soon Hwei Tan
  • Patent number: 10971218
    Abstract: A memory device having a wake-up protocol is disclosed. The memory device comprises a plurality of bitcells operative in a deep-sleep mode having corresponding bitline pairs coupled to the plurality of bitcells, a first PFET coupled between a core voltage supply and the plurality of bitcells configured to supply a core voltage to the plurality of bitcells, and a second PFET having a drain coupled to the plurality of bitcells, a source coupled to a gate of the first PFET, and a gate configured to receive a first wake signal to enable precharge of the plurality of bitcells.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 6, 2021
    Assignee: Synopsys, Inc.
    Inventor: Harold Pilo
  • Patent number: 10972095
    Abstract: A PWM buck converter includes a first P-type transistor having a drain terminal connected to a first node, a first N-type transistor having a drain terminal connected to the first node, and a gate driver configured to apply a first gate voltage to a first gate terminal of the first P-type transistor and apply a second gate voltage to a second gate terminal of the first N-type transistor. The gate driver includes a first buffer configured to generate the first gate voltage applied to the gate terminal of the first P-type transistor, a second buffer configured to generate the second gate voltage applied to the gate terminal of the first N-type transistor, and a capacitor configured to accumulate a portion of electrical charges supplied from the first buffer to the first P-type transistor, and supply the accumulated electrical charges to the gate terminal of the first N-type transistor.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: April 6, 2021
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Bai Sun Kong, Jung Duk Suh
  • Patent number: 10969809
    Abstract: A low dropout (LDO) includes voltage inputs to receive input from voltage sources. The LDO voltage regulator includes a regulated voltage output, blocking diodes, and circuitry configured to block leakage from a first voltage input with a first blocking diode when the first voltage input is less than the regulated voltage output, and to provide the regulated voltage output from the first voltage input and a second voltage input.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: April 6, 2021
    Assignee: Microchip Technology Incorporated
    Inventor: Philippe Deval
  • Patent number: 10969806
    Abstract: A voltage regulator includes a programming interface via which programming instructions may be applied to a processor of the voltage regulator. The voltage regulator operates the processor according to the programming instructions to select one of multiple active internally-generated analog voltage levels to determine an output voltage level of the voltage regulator.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: April 6, 2021
    Assignee: TAMIRAS PER PTE. LTD., LLC
    Inventor: David G. Wright
  • Patent number: 10968851
    Abstract: Provided is a booster device for driving an injector which can suppress an insufficiency of a boost voltage applied to the injector even when the fuel injection interval is short. A boost driver (switching element) is connected to a boost coil in series and turns on/off the conduction of the boost coil. A boost capacitor applies a voltage to the injector. A boost diode has an anode connected to a connection point of the boost coil and the boost driver and a cathode connected to the boost capacitor. A boost gate control circuit controls the boost driver to be turned on/off so as to increase a charging speed of the boost capacitor increases when a decision period indicating a period corresponding to an injection interval of the injector is equal to or less than the first threshold value.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: April 6, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Koichi Tsukio
  • Patent number: 10965208
    Abstract: The present invention is directed to Bidirectional Multimode Power Converter which employs a high frequency dynamically varying amplitude modulation and voltage steering-method to convert the source AC or DC voltages to output AC or DC voltages with programmable output voltage levels, output voltage frequency and duration. The Bidirectional Multimode Power Converters of the present invention support: inrush current control, turning off the idle converter, line voltage brown out protection, soft start, high pre-charge voltage generation, soft shut down of converter, dimming operation, programmable time of the day operation and operation for specified duration of time. The Bidirectional Multimode Power Converters of the present invention support coupling of multiple power sources for bidirectional power conversion.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: March 30, 2021
    Inventor: Viswa Nath Sharma
  • Patent number: 10965216
    Abstract: An integrated circuit comprising: a high-side pMOSFET comprising a drain and a gate; a node coupled to the drain of the high-side pMOSFET; a voltage-to-current circuit comprising a first nMOSFET and a first resistor, the first nMOSFET comprising a gate and a source, the first resistor comprising a terminal coupled to the source of the first nMOSFET; an error amplifier comprising an output port coupled to the gate of the first nMOSFET; a skip clamp nMOSFET comprising a source coupled to the output port of the error amplifier; and a current limit clamp pMOSFET comprising a source coupled to the output port of the error amplifier.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: March 30, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Gerhard Thiele, Manuel Wiersch
  • Patent number: 10958174
    Abstract: A power converter and method to detect a light load condition at an output of the power converter are presented. The power converter may have an inductor and a resistive element connected between an input of the power converter and an input of the inductor. The power converter may have a first chopping unit to generate a chopped voltage signal at an output of said first chopping unit, wherein the chopped voltage signal is generated by chopping an inductor voltage at the input of said inductor based on a duty cycle of the power converter. The power converter may have a reference current source, wherein the reference current source and a replica resistive element are arranged in series. The power converter may have a comparator unit to generate, based on the reference potential and based on the chopped voltage signal, a signal indicative of said light load condition.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: March 23, 2021
    Assignee: Dialog Semiconductor Inc.
    Inventors: Manmeet Singh, Pietro Gallina, Rosario Pagano, Vijay Choudhary, Vivek Parasuram, John Kesterson
  • Patent number: 10958169
    Abstract: A power converter includes an input node on an input side of the power converter, an output node on an output side of the power converter, a switch coupled to the input node and having a switch control node, an inductor coupled to the switch and to the output node, and a feedback compensation and control circuit between the output node and the switch control node. The feedback compensation and control circuit includes two or more programmable resistors to adjust one or more gains of i) a proportional-integral-derivative portion, and ii) a bandpass filter portion of the feedback compensation and control circuit. The feedback compensation and control circuit receives an output voltage from the output node and generates a compensated feedback signal based on the output voltage from the output node and the one or more gains, the switch control node being controlled based on the compensated feedback signal.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: March 23, 2021
    Assignee: Silanna Asia Pte Ltd
    Inventor: Barry S. Arbetter
  • Patent number: 10951108
    Abstract: This invention provides a switching power supply controlling circuit, the switching power supply comprises an upper transistor and a lower transistor, the switching power supply controlling circuit comprises a boost circuit, an input terminal of the boost circuit is connected to an input terminal of the switching power supply, the boost circuit output a first voltage to control a working state of the boost circuit, driving the upper transistor to be in an on state. The switching power supply controlling circuit adopts a boost circuit to provide a driving power for the upper transistor, and there is no need to set a bootstrap pin or a bootstrap capacitor.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: March 16, 2021
    Assignee: JOULWATT TECHNOLOGY (HANGZHOU) CO., LTD.
    Inventors: Yongji He, Xunjin Dou, Xunwei Zhou
  • Patent number: 10951115
    Abstract: A switching regulator includes a switch device that is connected between an input terminal to which an input DC voltage is applied and an output terminal from which an output DC voltage is output, and that is turned on and off according to a drive signal; a hysteresis generation circuit to which the input DC voltage and the output DC voltage are applied; a reference voltage generation circuit that generates a reference voltage having a gradient proportional to an output current or an output voltage; and a drive signal generation circuit that generates the drive signal by comparing the output DC voltage with the reference voltage, and that, where the hysteresis generation circuit generates the output current or the output voltage that is inversely proportional to a differential voltage between the input DC voltage and the output DC voltage.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: March 16, 2021
    Assignee: PANASONIC SEMICONDUCTOR SOLUTIONS CO., LTD.
    Inventors: Tetsuya Mihashi, Junji Ishiyama
  • Patent number: 10945318
    Abstract: A circuit assembly for operating a load may include an input for inputting an input voltage and/or current. The circuit assembly may further include an output for outputting an output voltage and/or current. The circuit assembly may further include an at least partially digital switching regulator with a feedback loop. A loop gain of the feedback loop may be frequency-dependent where the frequency ranges from 3 Hz to 20 Hz.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 9, 2021
    Assignee: OSRAM GmbH
    Inventor: Markus Heckmann
  • Patent number: 10944323
    Abstract: A power converter for detecting oscillation of an output voltage including a switching regulator configured to perform switching so that an inductor is alternatively connected to or isolated from an external power voltage and generate the output voltage by a current that flows through the inductor and an oscillation detector configured to detect oscillation that occurs in the output voltage and output an oscillation detection signal by determining whether the oscillation belongs to an oscillation frequency detection range to be detected by the oscillation detector may be provided.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: March 9, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyunseok Nam
  • Patent number: 10935582
    Abstract: The invention relates to a device, method, computer program and computer program product for determining the equivalent series resistance of a power converter having power train parameters comprising a capacitance, an inductance and the equivalent series resistance, the device comprising a resistance determining unit that obtains a ripple voltage embedded in an output voltage of the power converter, determines a ripple current based on the output voltage, the inductance and operational switching data of the power converter, and estimates the equivalent series resistance of the power converter based on the ripple voltage, ripple current and the operational switching data.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: March 2, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Magnus Karlsson, Fredrik Wahledow
  • Patent number: 10925497
    Abstract: A circuit arrangement for an optical monitoring system comprises a driver circuit configured to generate at least one driving signal for driving a light source and a detector terminal for receiving a detector current. The circuit arrangement further comprises a current source configured and arranged to generate at the detector terminal a reduction current. The reduction current has an amplitude which is given by a base value whenever none of the least one driving signal assumes a value suitable for activating the light source and by a sum of the base value and a reduction value otherwise. The circuit arrangement also comprises a processing unit configured to generate an output signal depending on a combination of the detector current and the reduction current.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: February 23, 2021
    Assignee: ams AG
    Inventors: Peter Trattler, Manfred Pauritsch, Herbert Lenhard
  • Patent number: 10931198
    Abstract: Aspects of the present disclosure provide for a circuit. In an example, the circuit comprises a buck-boost region detector. The buck-boost region detector comprises a timing criterions circuit that comprises a timer, a mode determination circuit coupled to the timing criterions circuit and comprising a processing element, and a switching circuit coupled to the mode determination circuit and comprising a digital logic structure.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: February 23, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Anmol Sharma
  • Patent number: 10928843
    Abstract: A device can be used for managing for managing the supply voltage on an output power supply pin of a USB Type-C source device that includes an AC-to-DC power converter for delivering the supply voltage. The source device is capable of supplying power to a receiver device. A power supply controller includes a first circuit configured to deliver a signal for discharging a capacitive network coupled to the power converter and also includes a second circuit configured to deliver, at the same time as the discharge signal, a new setpoint signal, corresponding to the new voltage delivered, to a control input of the power converter. A delay element is coupled between an output of the second circuit and the control input.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: February 23, 2021
    Assignee: STMICROELECTRONICS (GRENOBLE 2) SAS
    Inventor: Christophe Lorin
  • Patent number: 10924104
    Abstract: A power-switch-system (PSS) having a low-side transistor (LSS) and a high-side transistor (HSS), which are switchable to be conductive or switched to be blocking in respectively alternating time-segments of a switching-period of the PSS. A source-terminal of the LSS is connected to a load-terminal, and a drain-terminal of the LSS is connected to a supply-voltage via a storage-inductor. A drain-terminal of the HSS is connected to the load-terminal, and a source-terminal of the HSS is connected to the supply-voltage via the storage-inductor. Provided is a PSS of this kind, the LSS having at least two transistor-segments. At least two of the transistor-segments have a different electrical resistance in the connection to the storage-inductor. The PSS provides that at least two of the transistor-segments are switched at a different point in time during a switching operation of the PSS to reduce unwanted voltage fluctuations, without markedly increasing switching losses.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: February 16, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Spaeth, Joachim Joos
  • Patent number: 10925129
    Abstract: A tunable illumination system is disclosed which splits a single channel output into three by means of current steering and/or time division and multiplexing techniques. More particularly, the tunable light system may split the input current into three pulse-width modulated (PWM) channels. The individual duty cycles of the PWM channels may be adjusted based on a control signal that is received via a control signal interface. The control signal interface may include a switch and/or other circuity that is manipulated by the user when the user wants to change the color of light that is output by the illumination system.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: February 16, 2021
    Assignee: Lumileds LLC
    Inventor: Yifeng Qiu
  • Patent number: 10925131
    Abstract: An electronic device is described. The electronic device includes current measuring circuitry configured to measure load current to produce a load current measurement. The electronic device also includes a processor coupled to the current measuring circuitry. The processor is configured to calculate an estimated load current slope based on the load current measurement and to determine a predicted zero-cross point based on the estimated load current slope to minimize damaging voltage spike creation.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: February 16, 2021
    Assignee: WirePath Home Systems, LLC
    Inventors: Sidney Lyle King, Joseph M. Doubek, Gregory Scott Smith, Robert Don Bruhn, Jr.
  • Patent number: 10923952
    Abstract: In one embodiment, a power converter includes a wireless transmitter coil and a resonant capacitor that is configured to resonate at a first frequency. The wireless transmitter coil and resonant capacitor are configured to receive an alternating current at a second frequency such that the power converter outputs a first voltage that is dependent on the second frequency. In one embodiment, the first and second frequency are substantially equal. The power converter may also include an interconnection link configured to substantially double or vary the first voltage depending on a duty cycle that is applied to the interconnection link.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: February 16, 2021
    Assignee: CHARGEDGE, INC.
    Inventor: Sanjaya Maniktala
  • Patent number: 10924012
    Abstract: A power converter circuit that includes a switch node coupled to a regulated power supply node via an inductor may, during a charge cycle, source current to the switch node, and source a bypass current to the regulated power supply node using a regulator control signal. A control circuit may initiate the charge cycle using a first reference voltage level and a sensed inductor current, and generate the regulator control signal using a second reference voltage level and a voltage level of the regulated power supply node.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Yesim Inam, Miguel A. Dos Santos, Fabio Ongaro
  • Patent number: 10917014
    Abstract: A free-wheeling diode control method includes determining whether a sum of a first pulse width value of a free-wheeling diode obtained according to an inductance current law and a third pulse width value of a main control tube meets a first preset condition, obtaining a determining result, and controlling, according to the determining result, conduction of the free-wheeling diode according to the first pulse width value or a second pulse width value of the free-wheeling diode obtained according to a volt-second balance law.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: February 9, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Chengfeng Jiang, Hongfeng Liang
  • Patent number: 10903838
    Abstract: An integrated circuit includes a clock management unit that selectively provides a clock signal, an energy management circuit that provides an internal power supply voltage to an internal voltage rail in response to an external power supply voltage, and has a capacitor coupled between the internal voltage rail and a reference voltage terminal, and a clocked digital circuit that is coupled to the internal voltage rail and the reference voltage terminal and operates in synchronism with the clock signal. The clock management unit provides the clock signal at a first frequency during a standby state, continuously at a second frequency higher than the first frequency during an active state, and during a first clock cycle following an end of the standby state while suppressing the clock signal during at least one subsequent clock cycle during a transition state between the standby state and the active state.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 26, 2021
    Assignee: Silicon Laboratories Inc.
    Inventors: Brian Taylor Brunn, Paul Ivan Zavalney, Adrianus Josephus Bink, Chester Yu
  • Patent number: 10903653
    Abstract: Distributed series reactance modules and active impedance injection modules that are adapted to operating with electric power transmission lines over a wide range of transmission voltages are disclosed. Key elements include a virtual ground, an enclosure that acts as a Faraday shield, radio frequency or microwave control methods and the use of corona rings.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: January 26, 2021
    Assignee: Smart Wires Inc.
    Inventors: Ali Farahani, David Munguia, Amrit Iyer, Haroon Inam, Joe Carrow, Debrup Das, Arthur Kelley
  • Patent number: 10903721
    Abstract: An apparatus of charging an electric mobility may include a tire wheel having an external surface configured to be coupled to a tire and an internal surface in which an empty space is formed, a battery accommodated in the empty space of the internal surface of the tire wheel and mounted, like the tire wheel, on a rotation shaft fixed to the tire wheel to be rotationally driven, a stopper configured to selectively couple the battery to the rotation shaft, and a controller connected to the stopper and configured to control selective coupling of the rotation shaft to the battery by the stopper, wherein the stopper is controlled by the controller so that the battery is charged using an induced electromotive force generated between a coil wound on the battery and a permanent magnet which is mounted to face the battery.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: January 26, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Kyu-Beom Ko, Jin-Cheol Shin
  • Patent number: 10897200
    Abstract: A half-bridge converter is controlled by a circuit including a differential circuit receiving a reference signal and a feedback signal which is a function of an output signal from the converter. The half-bridge converter includes high-side and low-side electronic switches. A comparator generates a PWM-modulated signal for controlling the converter as a function of the duty cycle of the PWM-modulated signal in response to a signal at an intermediate node between the high-side and low-side electronic switches and an output of the differential circuit. A gain circuit block coupled between the intermediate node and the input of the comparator applies a ramp signal to the input of the comparator which is a function of the signal at the intermediate node. A variable gain is applied by the gain circuit block in order to keep a constant value for the duty cycle of said PWM-modulated signal irrespective of converter operation.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: January 19, 2021
    Assignee: STMicroelectronics S.r.l.
    Inventors: Alberto Cattani, Stefano Ramorini, Alessandro Gasparini
  • Patent number: 10896896
    Abstract: A semiconductor device includes a MOSFET including a PN junction diode. A unipolar device is connected in parallel to the MOSFET and has two terminals. A first wire connects the PN junction diode to one of the two terminals of the unipolar device. A second wire connects the one of the two terminals of the unipolar device to an output line, so that the output line is connected to the MOSFET and the unipolar device via the first wire and the second wire. In one embodiment the connection of the first wire to the diode is with its anode, and in another the connection is with the cathode.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: January 19, 2021
    Assignee: ROHM CO., LTD.
    Inventor: Keiji Okumura
  • Patent number: 10892681
    Abstract: A DC-DC converter generates an output voltage from an input voltage through current-mode control output feedback control using a current sense signal commensurate with a sampled value obtained by sampling a coil current in a switching output stage, for example, at the midpoint of the ON period or the OFF period of the switching output stage.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: January 12, 2021
    Assignee: Rohm Co., Ltd.
    Inventors: Shun Fukushima, Yuhei Yamaguchi
  • Patent number: 10886850
    Abstract: Multi-phase interleaving control of a power supply device is accelerated. Furthermore, in accelerating the multi-phase interleaving control in the power supply device, detection of feedback signal is accelerated. In the power supply device and a method for controlling the power supply device, output voltage is acquired as an operation result of a discrete time process using an initial value of the output voltage at a predetermined point, and a detection value of capacitance current at each point of the discrete time process. Accordingly, only detection of the initial value is performed when the output voltage being slow in response is acquired, and detection performed in the discrete time process can be accomplished by detection of capacitance current being rapid in response, thus enabling rapid response.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: January 5, 2021
    Assignee: KYOSAN ELECTRIC MFG. CO., LTD.
    Inventors: Itsuo Yuzurihara, Ryosuke Ohma, Hiroshi Kunitama, Yu Hosoyamada
  • Patent number: 10879794
    Abstract: A dc-dc controller is provided. The dc-dc controller includes a current sensing pin, a zero-current comparator, a comparison circuit and a threshold adjustment circuit. The current sensing pin is coupled to an output stage to receive a current sensing signal related to the output current. The zero-current comparator is coupled to the current sensing pin, and receives the current sensing signal and a first preset value to provide a zero-current signal. The comparison circuit is coupled to the zero-current comparator and the current sensing pin, and compares the current sensing signal with a second preset value to provide an adjustment signal. The threshold adjustment circuit is coupled to the comparison circuit and the zero-current comparator, and generates the first preset value according to the adjustment signal.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: December 29, 2020
    Assignee: uPI Semiconductor Corp.
    Inventors: Chih-Lien Chang, Min-Rui Lai
  • Patent number: 10879720
    Abstract: Balancing circuits for an ultracapacitor module are provided. In some implementations, the balancing circuit can include a regulator having an input. The regulator can be configured to compare an input voltage associated with the ultracapacitor received at the input to a reference voltage and to provide an output via an output node. The balancing circuit can further include a switching circuit coupled to the regulator. The switching circuit can be configured to discharge the ultracapacitor based at least in part on the output of the regulator. The switching circuit can include at least one semiconductor switching element operated in a hard switching manner during operation of the switching element.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: December 29, 2020
    Assignee: AVX Corporation
    Inventor: Joseph M. Hock
  • Patent number: 10879811
    Abstract: A switching power supply device has a switching output stage generating an output voltage from an input voltage by switching operation and a controller controlling the switching output stage based on a feedback voltage commensurate with the output voltage. The switching power supply device can perform switching suspension control whereby it stops switching operation on detecting a light-load condition based on the feedback voltage, though it restarts switching operation on detection of an overvoltage condition during suspension of switching operation.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: December 29, 2020
    Assignee: Rohm Co., Ltd.
    Inventors: Shun Fukushima, Yosuke Fukumoto
  • Patent number: 10871810
    Abstract: A power supply system can include at least one power switch to generate an output current based on an input voltage in response to a switching signal to generate an output voltage. A feedback system generates a feedback current based on the output voltage. A mode detector generates a control current associated with the output current based on the feedback current and selects between a pulse-width modulation (PWM) mode and a pulse mode based on an amplitude of the control current. The PWM mode is associated with a sequential on-time and off-time of the at least one power switch, and the pulse mode is associated with adding an idle time between the on-time and the off-time of the at least one power switch based on the switching signal. A gate driver system generates the switching signal based on the mode.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: December 22, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: Joerg Kirchner, Stefan Dietrich, Julian Becker, Eduardas Jodka
  • Patent number: 10873260
    Abstract: A voltage converter circuit comprises a charge pump circuit, a switching converter circuit, and a control circuit. The charge pump circuit includes multiple switch circuits connected in series. The switching converter circuit includes a first inductor coupled to an output node of the voltage converter circuit, and a second inductor coupled to a series connection of the multiple switch circuits. The control circuit is configured to control activation of the multiple switch circuits to generate a regulated voltage at the output node, and to activate each of the multiple switch circuits when a drain to source voltage of the switch circuit is zero volts.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: December 22, 2020
    Assignee: Analog Devices International Unlimited Company
    Inventors: Yingyi Yan, Yi Ding Gu
  • Patent number: 10873219
    Abstract: Contactless power supply device of the present invention includes: contactless power supply section that supplies AC power in a contactless manner; contactless power receiving section that receives the AC power in a contactless manner; first DC transformer circuit that transforms, to DC load voltage, DC reception-power voltage obtained from the contactless power receiving section and supplies the DC load voltage to first electric load, and that has a reverse transfer function of transferring regenerative power generated by the first electric load in a reverse direction; and second DC transformer circuit that transforms the DC reception-power voltage to DC load voltage and supplies the DC load voltage to second electric load. Accordingly, the generated regenerative power is allocated and made available to the other electric load, and a power storage section is not necessary, which suppresses an increase in the weight and size of the power-receiving-side device.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: December 22, 2020
    Assignee: FUJI CORPORATION
    Inventors: Shinichi Kato, Takeshi Nomura, Masayuki Oki
  • Patent number: 10855181
    Abstract: A variable efficiency and response buck converter is achieved. The device includes a multi-phase switch, the coupled coils, the filter capacitor, and the load. The multi-phase switch includes the phase control inputs, the circuit common reference, at least two pairs of complementary switches with each switch containing one upper switch and one lower switch, at least two phase control outputs from the complementary switches. The coupled inductive coils are coupled to the phase control outputs to enable weak couplings and strong couplings. Based on the working mode, equivalently the coupled coils can provide strong mutual inductances and weak mutual inductances. The filter capacitors connected to the output of the coupled coils provide high efficiency output to the load.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: December 1, 2020
    Assignee: Apple Inc.
    Inventor: Mark Childs
  • Patent number: 10855165
    Abstract: Circuits and methods are provided for soft switching within a switched-capacitor DC/DC converter, so as to reduce switching losses and improve efficiency. This is accomplished, in preferred converters, by coupling a compensation inductor between one half-bridge of an output rectifier and another half-bridge of the output rectifier. The compensation inductor functions to transfer charge from or to the capacitance of switches within the converter while the switches are off, such that the voltage across each switch is reduced to zero before that switch is turned on. This provides zero-voltage switching (ZVS) and its associated high efficiency. The efficiency associated with the ZVS makes ideal zero-current switching (ZCS) less important, such that high-precision capacitors and inductors forming the resonant tanks required by near-ideal ZCS are not required. The resultant circuits are physically smaller and less expensive than other converters that require near-ideal ZCS, but achieve similar or better efficiency.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: December 1, 2020
    Assignee: Infineon Technologies Austria AG
    Inventor: Christian Rainer
  • Patent number: 10855185
    Abstract: A semiconductor circuit includes a reference voltage generating circuit which generates a first reference voltage; a voltage control circuit which receives the first reference voltage from the reference voltage generating circuit to output a second reference voltage; a DC-DC conversion circuit which executes DC-DC conversion on the basis of the second reference voltage which is output from the voltage control circuit, and provides an output thereof to a first node; and a voltage regulator which executes voltage regulating on the basis of the first reference voltage which is output from the reference voltage generating circuit, and a voltage of the first node, and provides an output thereof to a second node.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: December 1, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki Jae Song, Jong Woon Yoo
  • Patent number: 10853292
    Abstract: A computing device includes a switch that operates in a linear mode according to a threshold based on a detection of an increase of current drawn by a device that is connected to the switch. The linear mode delivers a constant amount of current to the device. The switch, upon reaching the threshold, exits the linear mode and operates in a non-linear mode to communicate power to the device.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: December 1, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Raghotham Reddy Nathadi
  • Patent number: 10845853
    Abstract: The disclosure provides a system of providing power to a chip on a mainboard, including: a preceding-stage power supply, located on a mainboard, and configured to receive a first DC voltage and to provide a second DC voltage, wherein the first DC voltage is greater than the second DC voltage; and a first post-stage power supply and a second post-stage power supply, located on the mainboard, to receive the second DC voltage, the first post-stage power supply is disposed at a first side of the chip, the second post-stage power supply is disposed at a second side of the chip, the first post-stage power supply provides a third DC voltage to the chip, the second DC voltage is greater than the third DC voltage, the second post-stage power supply provides a fourth DC voltage to the chip, and the second DC voltage is greater than the fourth DC voltage.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: November 24, 2020
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Haoyi Ye, Jianhong Zeng, Xiaoni Xin
  • Patent number: 10840731
    Abstract: A high power flash battery system includes a wayside flash battery and a half-bridge cell. The half-bridge cell has a voltage polarity opposite to that of the wayside flash battery. The half-bridge cell is configured to be in a voltage compensation mode when the system is unloaded, and to be switched to a bypass mode when a voltage drop occurs due to the system being loaded. A high power charging station, an onboard battery operated device, as well as a method for flash charging are also presented.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: November 17, 2020
    Assignee: ABB Power Grids Switzerland AG
    Inventor: Tomas Tengner
  • Patent number: 10840742
    Abstract: A wireless power receiver circuit includes an active rectifier circuit with a plurality of power transistors, wherein the active rectifier circuit is configured to rectify an induced AC receiver current. The wireless power receiver circuit includes also includes a gate drive controller circuit configured to sense the induced AC receiver current and to provide gate drive signals for the plurality of power transistors synchronized with the induced AC receiver current. The gate drive controller circuit includes a current sense circuit configured to provide two voltage signals having a difference proportional to the induced AC receiver current.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: November 17, 2020
    Assignee: Efficient Power Conversion Corporation
    Inventors: Michael A. de Rooij, Yuanzhe Zhang
  • Patent number: 10838444
    Abstract: An adaptive constant current engine (ACCE) to control a current of a target load device at a constant level is disclosed. The ACCE includes a closed feedback loop which generates a sensed current that represents a load current conducted by the target load device and then compares the sensed current to a reference current. Based on this comparison, the circuit can output a voltage to control the current conducted by the target load device. The disclosed ACCE adapts the comparison to an operating voltage of the target load device in order to provide electrical conditions at a reference node receiving a reference current that are the same as electrical conditions at a sensing node receiving a sensing current. Accordingly, the ACCE can generate very accurate comparisons regardless of variations in the operating voltage of the target load device.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: November 17, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Rovshan Rustamov