Having Transistorized Inverter Patents (Class 363/16)
  • Patent number: 10965219
    Abstract: A controller for use in a power converter with multiple outputs includes a discharge detect circuit coupled to receive a voltage signal from a transformer winding of the power converter to output a discharge signal in response to the voltage signal. A multi-output signal process and interface block is coupled to output request signals to the output selection drive and idle ring visibility logic circuit. An output selection drive and idle ring visibility logic circuit is coupled to receive the discharge signal from the discharge detect circuit and the output request signals from the multi-output signal process and interface block. An idle ring detection circuit is coupled to one of the plurality of output switches and coupled to output an idle ring output signal to generate a next request pulse.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: March 30, 2021
    Assignee: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Manoj Bhasin, Matthew David Waterson, Karl Moore
  • Patent number: 10937388
    Abstract: A method and device are described to increase the light output on specific areas of a display. The display may be part of a High Dynamic Range (HDR) device. The device includes a processor and a power source. The processor is configured to process a received content signal. The power source further includes a circuit configured to receive a request signal from the processor and, in response to the received request signal, adjust the power supply limitation that increases a light output on a first area of a display when the content signal is displayed.
    Type: Grant
    Filed: January 12, 2019
    Date of Patent: March 2, 2021
    Assignee: INTERDIGITAL CE PATENT HOLDINGS
    Inventor: Anton Werner Keller
  • Patent number: 10897193
    Abstract: A system includes a switching power supply that includes switch devices configured to provide a regulated output voltage based on an input voltage. A controller is configured to control the switch devices based on a power demand signal. A direct conduction avoidance circuit is configured to provide a direct conduction avoidance signal based on the regulated output voltage exceeding a direct conduction threshold voltage. The direct conduction avoidance signal is combined with a compensation signal to provide the power demand signal to the controller. An override circuit is configured to disable the direct conduction avoidance circuit based on the input voltage of the switching power supply being below an override threshold voltage.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: January 19, 2021
    Assignee: Texas Instruments Incorporated
    Inventor: William James Long
  • Patent number: 10897206
    Abstract: A switched-mode power supply with near valley switching includes a quasi-resonant converter. The converter includes a switch element that is turned on not only at the valley, but also in a window range of ?tNVW close to the valley, where the voltage across the switch element is at its minimum. This advantageously reduces switching loss and maintains a balance between efficiency and frequency variation.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: January 19, 2021
    Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Zhibo Tao, Jung-Sheng Chen, Li Lin, Kai-Fang Wei, Chih-Hsien Hsieh, Hangseok Choi, Yue-Hong Tang
  • Patent number: 10886909
    Abstract: An electric assembly includes an insulated gate bipolar transistor device, a wide-bandgap transistor device electrically connected in parallel with the bipolar transistor device and a control circuit. The control circuit is electrically coupled to a gate terminal of the bipolar transistor device and to a control terminal of the wide-bandgap transistor device. The control circuit is configured to turn on the bipolar transistor device and to turn on the wide-bandgap transistor device at a predefined turn-on delay with respect to a turn-on of the bipolar transistor device.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: January 5, 2021
    Assignee: Infineon Technologies AG
    Inventors: Roman Baburske, Johannes Georg Laven, Thomas Basler
  • Patent number: 10886855
    Abstract: According to some aspects of the present disclosure, resonant converter power supplies and control methods for reducing unbalanced currents in resonant power supplies are disclosed. Example resonant converter power supplies include an input, an output, a transformer, and a bridge circuit coupled between the input and a primary winding of the transformer. The power supply also includes first and second rectifier rails each coupled between a secondary winding of the transformer and the output, and at least one sensor coupled to generate an error signal representing unbalanced currents in the first and second rectifier ails. The power supply further includes a controller configured to receive the error signal, and adjust a duty cycle of at least one of a first switch and a second switch of the bridge circuit based on the error signal to reduce the unbalanced currents in the first and second rectifier rails.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: January 5, 2021
    Assignee: Astec International Limited
    Inventors: Yongtao Xie, Zhanwu Wang, Sudhakarababu Chakkirala
  • Patent number: 10879810
    Abstract: A synchronous rectifier OFF control module and a synchronous rectifying control circuit. The synchronous rectifier OFF control module may receive a zero-cross threshold signal and a drain-source voltage signal indicative of a drain to source voltage of a synchronous rectifier, and to compare the drain-source voltage signal with the zero-cross threshold signal to determine whether the rectifier current flowing through the synchronous rectifier is crossing zero. The synchronous rectifier OFF control module may further receive a peak current detection signal indicative of a peak value of the rectifier current, and to adjust the magnitude of the zero-cross threshold signal to vary in the same direction as the peak value of the rectifier current based on the peak current detection signal. The synchronous rectifier OFF control module may provide more accurate control to the turn OFF moment of the synchronous rectifier and thus can help to reduce power loss.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: December 29, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventor: Tianzhu Zhang
  • Patent number: 10873184
    Abstract: A system includes a controller that is configured to generate a node control signal and a plurality of switch control signals, a plurality of programmable emulators, each of the plurality of programmable emulators being configurable as one of a plurality of node types responsive to the node control signal, and a plurality of switches that are programmable to couple ones of the plurality of programmable emulators to each other responsive to the plurality of switch control signals.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: December 22, 2020
    Assignee: University of Tennessee Research Foundation
    Inventors: Fei Wang, Leon M. Tolbert, Yiwei Ma, Kevin Tomsovic, Kai Sun, Shuoting Zhang, Jingxin Wang
  • Patent number: 10862393
    Abstract: A DC-DC converter includes a capacitive power converter connected to a first terminal side, an LC circuit connected to a second terminal side and including an inductor and a second capacitor, and a control circuit that performs switching of a plurality of switch elements. The control circuit performs the switching at a switching frequency equal to or higher than a resonant frequency determined by the capacitance of the capacitive power converter and the capacitance and the inductance of the LC circuit, steps down an input DC voltage inputted to the first terminal, and outputs an output DC voltage from the second terminal.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: December 8, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kazunori Tsuda, Masanari Tago
  • Patent number: 10855189
    Abstract: A control apparatus for a resonant converter that receives a direct current (DC) voltage of a bulk capacitor. The control apparatus includes a forced turn-off control circuit that receives a resonance current detection signal, which has been produced by shunting a resonance current flowing through the resonant converter and converting the shunted resonance current to a voltage, outputs a forced turn-off signal in response to the resonance current detection signal falling between a first variable threshold and a second variable threshold that is smaller than the first variable threshold, and varies the first variable threshold and the second variable threshold in accordance with an input voltage inputted to the forced turn-off control circuit by dividing the DC voltage of the bulk capacitor.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: December 1, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Jian Chen
  • Patent number: 10845836
    Abstract: Disclosed are a method and device for tracking control of a maximum power point of a solar cell, wherein an output voltage of the solar cell is converted to a voltage required by a load via a conversion module comprising a switching unit. The control method comprises: acquiring an open-circuit voltage of the solar cell; adjusting a duty cycle of the switching unit such that an output voltage of the solar cell decreases from the open-circuit voltage gradually in a first change direction; if the output voltage of the solar cell is less than or equal to a predetermined voltage value, reversely adjusting the duty cycle of the switching unit, wherein the predetermined voltage value is less than the output voltage of the solar cell corresponding to the maximum power of the solar cell; calculating a current output power of the solar cell.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: November 24, 2020
    Inventor: Hongtao Li
  • Patent number: 10840824
    Abstract: A power inverter, such as a synchronous buck power inverter, that is configured with a high frequency switching control having a (PWM) controller and sensing circuit. Controller provides a low frequency oscillating wave to effect switching control on a synchronous-buck circuit portion that includes a plurality of switches to invert every half cycle of the frequency provided by controller. The inverting process thus creates a positive and negative transition of the oscillating wave signal. A low frequency switching stage includes a further plurality of switches configured to operate as zero voltage switching (ZVS) and zero current switching (ZCS) drives Charge on an output capacitor is discharged to zero on every zero crossing of low frequency switching stage and advantageously discharges energy every half cycle. During this discharge of energy, the zero crossing distortion in the low frequency sine wave is greatly reduced.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: November 17, 2020
    Assignee: JABIL INC.
    Inventors: Ronald Beebe, Christopher D. Compton, David Eckerson, Yizhe Liu, Salman Talebi
  • Patent number: 10834793
    Abstract: A power supply circuit can include: a constant current control circuit configured to receive a first voltage and a first current from a power supply, and to generate a second voltage and a second current that are substantially constant; a shunt circuit, where when the second current is greater than the output current, the shunt current circuit is configured to shunt the second current, and when the second current is less than or equal to the output current, the shunt circuit stops operating; and an energy storage circuit, where when the second current is greater than the output current, the energy storage circuit is configured to store energy, and when the second current is less than or equal to the output current, the energy storage circuit is configured to release energy and provide power for the load together with the constant current control circuit.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: November 10, 2020
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Hongbin Lai, Jianxin Wang
  • Patent number: 10834366
    Abstract: In implementations described herein, power is supplied to functional components of audio/video (A/V) recording and communication doorbell devices (“A/V doorbells”) during activation of signaling devices that are coupled to the A/V doorbells without the use of a backup power supply. To illustrate, systems described herein may include first parallel circuitry coupled to the signaling device and second parallel circuitry coupled to an A/V doorbell. The first parallel circuitry and the second parallel circuitry are configured to supply sufficient power to the functional components of the A/V doorbell during activation of the signaling device. In particular implementations, the first parallel circuitry and the second parallel circuitry include shunting circuitry to control the flow of current through the first and second parallel circuitry and supply sufficient power to both the signaling device and the A/V doorbell.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: November 10, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Daniil Tretiakov, James Steven Skeoch, Robert Tso
  • Patent number: 10826404
    Abstract: A power supply as described herein includes a voltage converter, main controller, and a bias controller. The voltage converter including a primary stage and a secondary stage. The controller is operable to control regulation of an output voltage from the secondary stage based on a received feedback signal. As its name suggests, the output voltage from the secondary stage powers a load. During certain load conditions, the bias controller maintains (via novel biasing) a magnitude of a power supply voltage above a bias threshold value. More specifically, the bias controller is operable to prevent the power supply voltage from falling below the bias threshold value, preventing an under voltage lockout condition such that the controller is able to quickly continue conveyance of sufficient energy from the first stage to the second stage when the load increases a rate of consuming power provided by the output voltage.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: November 3, 2020
    Assignee: Infineon Technologies Austria AG
    Inventors: Po-Jung Chung, Martin Krueger
  • Patent number: 10826375
    Abstract: A controller for use in a power converter comprising a request control circuit coupled to receive a feedback signal representative of an output of the power converter. The request control circuit is coupled to generate a request signal for controlling a power switch. The request signal can include a synchronization signal in response to the feedback signal and a jitter average signal. The synchronization signal is generated by the request transmitter circuit and corresponds to an average on time for controlling the power switch.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 3, 2020
    Assignee: Power Integrations, Inc.
    Inventors: Zhao-Jun Wang, Sundaresan Sundararaj, Tiziano Pastore, Qing McIntosh, Lance M. Wong
  • Patent number: 10819220
    Abstract: The present application is directed to a display device and an over-voltage protection method. As an example, the display device includes a power source assembly and an electric load. The power source assembly includes an LLC circuit, a transformer and a feedback circuit. An input end of the transformer is connected with a control end of the LLC circuit, a first output end of the transformer is connected with a supply end of the LLC circuit, a second output end of the transformer is connected with the electric load, and the transformer is configured to supply power to the LLC circuit and the electric load. A first end of the feedback circuit is connected with the second output end of the transformer, a second end of the feedback circuit is connected with the feedback end of the LLC circuit and the feedback circuit is configured to supply a voltage derived from the second output end of the transformer to the LLC circuit.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: October 27, 2020
    Assignee: HISENSE VISUAL TECHNOLOGY CO., LTD.
    Inventors: Haifeng Liu, Hongbo Chi, Kuanzhi Gao, Wentao Han
  • Patent number: 10804807
    Abstract: An apparatus for zero voltage switching includes a ZVS assist circuit connected between a switching node and a negative connection of a converter. The switching node is located between first and second switches of a switching leg of the converter. The converter is fed by a constant current source and feeds a constant current load. The ZVS assist circuit includes a ZVS inductance, a first ZVS switch that allows current through the ZVS inductance to change a voltage of the switching node to a condition for zero voltage switching of the first switch of the switching leg, and a second ZVS switch that allows current through the ZVS inductance to change the voltage of the switching node to a condition for zero voltage switching of the second switch of the switching leg. Current through the first ZVS switch is opposite current through the second ZVS switch.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: October 13, 2020
    Assignee: Utah Sate University
    Inventors: Tarak Saha, Hongjie Wang, Regan A Zane
  • Patent number: 10796887
    Abstract: Some embodiments include a high voltage, high frequency switching circuit. In some embodiments, the high voltage, high frequency switching circuit includes a high voltage switching power supply that produces pulses having a voltage greater than 1 kV and with frequencies greater than 10 kHz; a transformer having a primary side and secondary side; an output electrically coupled with the secondary side of the transformer; and a primary sink electrically coupled with the primary side of the transformer and in parallel with the high voltage switching power supply, the primary sink comprising at least one resistor that discharges a load coupled with the output.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: October 6, 2020
    Assignee: Eagle Harbor Technologies, Inc.
    Inventors: James Prager, Timothy Ziemba, Kenneth Miller, Ilia Slobodov
  • Patent number: 10790763
    Abstract: A system includes a bus, and a variable voltage converter (VVC) having a switch in series with a capacitor, and an inductor in parallel with the capacitor and switch, and configured such that operation of the switch in boost mode over a duty cycle range from 0 to less than 0.5 results in a corresponding voltage output to the bus from 0 to a maximum of the VVC.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: September 29, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Baoming Ge, Lihua Chen
  • Patent number: 10790696
    Abstract: The present disclosure discloses a charging device, a charging method, a power adapter and a terminal. The charging device includes a charging receiving terminal, a voltage adjusting circuit and a central control module. The charging receiving terminal is configured to receive an alternating current. The voltage adjusting circuit includes a first rectifier, a switch unit, a transformer and a second rectifier. The first rectifier is configured to rectify the alternating current and output a first voltage. The switch unit is configured to modulate the first voltage to output a modulated first voltage. The transformer is configured to output a second voltage according to the modulated first voltage. The second rectifier is configured to rectify the second voltage to output a third voltage. The voltage adjusting circuit applies the third voltage to a battery directly.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: September 29, 2020
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Shebiao Chen, Jun Zhang, Chen Tian, Shiming Wan, Jiada Li
  • Patent number: 10790756
    Abstract: A power supply includes a transistor that is connected to a primary winding of a transformer. A controller controls a switching operation of the transistor by quasi-resonant switching. The controller receives a feedback voltage and adjusts the feedback voltage to adjust a blanking frequency, which is an inverse of a blanking time during which the transistor is prevented from being turned on. The controller turns on the transistor after expiration of the blanking time based on a level of a resonant ring.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: September 29, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Bonggeun Chung, Taesung Kim, Gwanbon Koo
  • Patent number: 10790753
    Abstract: Reduced voltage switching of a main switch in flyback power converters. At least some example embodiments are methods including: storing energy in a field associated with a secondary winding of a transformer, the secondary winding arranged for flyback operation within a secondary circuit of the power converter; charging a capacitor coupled to an auxiliary winding of the transformer; discharging the energy in the field associated with the secondary winding to provide an output voltage of the power converter; and when the electrical current flowing through the secondary winding reaches a predetermined low level reducing voltage across a main switch in a primary circuit of the power converter by coupling the capacitor to the auxiliary winding to create a voltage on a primary winding of the transformer.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: September 29, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Gwanbon Koo, Youngbae Park, Taesung Kim, BongGeun Chung
  • Patent number: 10784790
    Abstract: A resonant conversion apparatus with extended hold-up time includes a resonant conversion unit, a time-extended unit, and a control unit. The resonant conversion unit includes a primary side, a transformer unit, and a secondary side. The time-extended unit includes a coil and a bridge arm assembly. When a switching frequency of the primary side is less than a critical frequency, the control unit controls the bridge arm assembly being switched on or switched off so that an output voltage of the resonant conversion apparatus is higher than a predetermined voltage within a hold-up time.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: September 22, 2020
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chia-Hsiong Huang, Yi-Hsun Chiu
  • Patent number: 10778109
    Abstract: A power supply includes a primary circuit connected to a primary winding of a transformer and a secondary circuit connected to a secondary winding of the transformer. The primary circuit includes MOSFETs, and the secondary circuit includes MOSFETs configured to rectify power transmitted from a primary side of the transformer and includes a capacitor configured to store the rectified power. The secondary circuit performs a discharge operation of discharging the capacitor and causing a current to flow into the secondary winding of the transformer to reduce a source-drain voltage of the MOSFETs before the MOSFETs are switched from an off state to an on state. Thus, the power supply having a high power-conversion efficiency even during low output is provided.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: September 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Shiomi, Akihide Shibata, Hiroshi Iwata
  • Patent number: 10770968
    Abstract: An adaptive pulse frequency modulation for a switching power converter is provided that varies the switching frequency across a cycle of a rectified input voltage for the switching power converter From a beginning of the cycle of the rectified input voltage, the switching frequency decreases from a maximum value to a minimum value at a mid-point of the cycle and then increases from the mid-point back to the maximum value at an end of the cycle.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: September 8, 2020
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Laiqing Ping, Nan Shi, Xiaoyan Wang
  • Patent number: 10770979
    Abstract: The LLC resonant converter includes a bridge circuit configured to receive a DC input voltage, an LLC resonant circuit connected to the bridge circuit, a transformer connected to the LLC resonant circuit, a rectifier circuit connected to the transformer and configured to send out a converted DC voltage, a resonant capacitor changeover circuit, a bridge circuit control section, and a resonant capacitor changeover control section. When the input voltage exceeds a changeover voltage, the operating frequency is raised higher than the resonance frequency, and thereafter the switch is turned off.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: September 8, 2020
    Assignee: OMRON Corporation
    Inventors: Mitsuru Sato, Shingo Nagaoka, Hiroyuki Onishi
  • Patent number: 10763743
    Abstract: A controller circuit for controlling switching elements and controlling dead-time of the switching elements is configured to generate a phase difference voltage using voltage at a control node of a first switching element and voltage at a control node of a second switching element. The first switching element is configured to couple a first node of a supply and a switch node and the second switching element is configured to couple the switch node and a second node of the supply. The controller circuit is further configured to generate a first driving signal based on a first pulse width modulation (PWM) signal for the first switching element and the phase difference voltage. The first driving signal includes a voltage-controlled delay module. The controller circuit is further configured to generate a second driving signal for driving the second switching element based a second PWM signal for the second switching element.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 1, 2020
    Assignee: Infineon Technologies AG
    Inventor: Andrea Zuccollo
  • Patent number: 10756648
    Abstract: A multiphase inverter for an electric vehicle drive has a plurality of drivers to provide drive signals to respective gate loops of upper and lower transistors in the phase legs. A transformer has a secondary winding in a first gate loop of a first transistor in one phase leg and a primary winding connecting a Kelvin-emitter of the first transistor to a Kelvin-emitter of a second transistor in the other phase leg. Switching transients of transistors are shortened because when gate signal is toggled to change a conduction state of a transistor in a first phase leg, a rate of current change in the first leg is sensed in a transformer primary winding connected across a stray inductance of the first leg. A voltage proportional to the sensed rate is added to the gate signal via a transformer secondary winding, thereby increasing a common source inductance of the transistor.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: August 25, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Zhuxian Xu, Chingchi Chen
  • Patent number: 10742134
    Abstract: A method and device for providing isolated power transfer to a low-power load across a capacitor of a series resonance circuit are shown. The method includes comparing an output voltage received via a feedback loop with a desired output voltage. Responsive to determining that the output voltage is not equal to the desired output voltage, the method determines a sub-harmonic order of the resonant frequency of the series resonance circuit to use as a switching frequency and switches the series resonance circuit at substantially the determined subharmonic order of the resonant frequency.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: August 11, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Lei Chen, Rajarshi Mukhopadhyay, Mark W. Morgan, Joseph A. Sankman
  • Patent number: 10727756
    Abstract: Provided is a circuit module having less noise, and an inverter using the same. The circuit module 2 is provided with a circuit part 4, an input terminal part 5, an output terminal part 6, and a support 21. The circuit part 4 includes a conversion circuit, and a switch circuit. The output terminal part 6 includes a first output terminal 61 and a second output terminal 62 that are respectively electrically connected to a pair of output points of the circuit part 4. The arrangement of the output terminal part 6 on one surface of the support 21 is such that the first output terminal and the second output terminal are positioned around the circuit part 4 on the same side with respect to the circuit part 4, or the first output terminal and the second output terminal are adjacent to one another around the circuit part 4.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: July 28, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shusaku Goto, Yusuke Iwamatsu, Akira Yoshitake
  • Patent number: 10720790
    Abstract: The present disclosure discloses a charging device, a charging method, a power adapter and a terminal. The charging device includes a charging receiving terminal, a voltage adjusting circuit and a central control module. The charging receiving terminal is configured to receive an alternating current. The voltage adjusting circuit includes a first rectifier, a switch unit, a transformer and a second rectifier. The first rectifier is configured to rectify the alternating current and output a first voltage. The switch unit is configured to modulate the first voltage to output a modulated first voltage. The transformer is configured to output a second voltage according to the modulated first voltage. The second rectifier is configured to rectify the second voltage to output a third voltage. The voltage adjusting circuit applies the third voltage to a battery directly.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: July 21, 2020
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Shebiao Chen, Jun Zhang, Chen Tian, Shiming Wan, Jiada Li
  • Patent number: 10720921
    Abstract: A dead-time circuit includes a signal propagation path from a first input node receiving a PWM modulated control signal to an output node, such signal propagation path switchable between a non-conductive state and a conductive state, such that the signal at the first input node is transferred to the output node when the signal propagation path is in the conductive state. The dead-time circuit further includes a differentiator circuit block coupled to a second input node and to the signal propagation path, the second input node configured to be coupled to an intermediate node of a half-bridge circuit. The differentiator circuit block switches the signal propagation path between the non-conductive state and the conductive state as a function of a time derivative of a signal at the second input node. At least one time-delay circuit component delays transfer of the signal at the first input node to the output node.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: July 21, 2020
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Francesco Pulvirenti, Salvatore Cassata, Salvatore Giuseppe Privitera
  • Patent number: 10707743
    Abstract: A circuit for converting DC to AC power or AC to DC power comprises a storage capacitor, boost and buck inductors and switching elements. The switches are controlled to steer current to and from the storage capacitor to cancel DC input ripple or to provide near unity power factor AC input. The capacitor is alternately charged to high positive or negative voltages with an average DC bias near zero. The circuit is configured to deliver high-efficiency power in applications including industrial equipment, home appliances, mobility devices and electric vehicle applications.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 7, 2020
    Inventor: Robert W. Horst
  • Patent number: 10672557
    Abstract: Disclosed are a wireless power transmitter and a method of controlling power thereof. A wireless power transmitter includes a power supply device to supply AC power to the wireless power transmitter; and a transmission coil to transmit the AC power to a reception coil of a wireless power receiver by resonance. The wireless power transmitter controls transmission power to be transmitted to the wireless power receiver based on a coupling state between the transmission coil and the reception coil.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: June 2, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Su Ho Bae
  • Patent number: 10649387
    Abstract: The power supply apparatus comprising a generation unit configured to generate a pulse signal, a memory unit configured to store information set in advance on the driving frequency, and a determination unit configured to determine an error of the input voltage and an error of a load, to a piece of the information stored in the memory unit, a driving frequency detected by the detection unit under a state where a load is connected to the convertor, and based on a result of comparing, to a piece of the information stored in the memory unit, a driving frequency detected by the detection unit under a state where the load is not connected to the convertor.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: May 12, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun Kawakatsu
  • Patent number: 10651720
    Abstract: An object of the present invention is to synchronize PWM between individual phases of an IPM, so that the IPM has a simplified-scale circuit. An IPM according to the present invention includes a DC-DC converter including a multi-phase arm having a plurality of phase arms connected in parallel on a secondary side, a secondary-wire-voltage detection circuit configured to detect a secondary wire voltage in each phase arm of the DC-DC converter, and a synchronization-signal generation circuit configured to generate a synchronization signal in each phase arm on the basis of the behavior of the secondary wire voltage.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: May 12, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takatoshi Yasui, Takahiko Murakami, Akira Yamamoto, Yoshikazu Tsunoda
  • Patent number: 10644613
    Abstract: An inverter for inductive power transfer is disclosed.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: May 5, 2020
    Assignee: DRAYSON TECHNOLOGIES (EUROPE) LIMITED
    Inventors: Samer Aldhaher, Manuel Pinuela Rangel, Paul David Mitcheson, David Christopher Yates
  • Patent number: 10637296
    Abstract: A bidirectional power converter circuit is controlled via a hysteresis loop such that the bidirectional power converter circuit can compensate for variations and even changes in transmit and receive coil locations without damaging components of the system. Because the bidirectional power converter is capable of both transmitting and receiving power (at different times), one circuit and board may be used as the main component in multiple wireless power converter designs. A first bidirectional power converter is employed in a sealed battery unit having no external electrical contacts. A second bidirectional power converter is employed in a corresponding cart bidirectional power converter assembly. The battery unit and the cart bidirectional power converter assembly cooperate to wirelessly transmit power from the battery unit to a load of the cart bidirectional power converter assembly and from a power source to the battery unit via the cart bidirectional power converter assembly.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: April 28, 2020
    Assignee: Enovate Medical LLC
    Inventors: George Blakely, Gordon Waid
  • Patent number: 10622685
    Abstract: A problem detection apparatus includes a relay, a measurement circuit and a controller. The relay is provided between a power supply and an external circuit, both of which are in a high voltage system. The relay is configured to switch an electrical connection state of the power supply to the external circuit between a closed state and an open state. The measurement circuit measures a voltage of a circuit in the high voltage system. The measurement circuit is in the high voltage system and connected between the relay and the external circuit. In a case where a command to switch the relay to the open state has been output, the controller detects, based on the voltage measured by the measurement circuit, whether or not the relay has a short circuit. The controller is in a low voltage system having a lower voltage than a voltage of the high voltage system.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: April 14, 2020
    Assignee: FUJITSU TEN Limited
    Inventors: Haruhiro Yamamoto, Yohei Terada
  • Patent number: 10615613
    Abstract: Disclosed are implementations, including a method that includes obtaining sensor data from at least one sensor in communication with a charging station configured to simultaneously charge multiple chargeable devices using power stored in one or more energy storage devices connected to the charging station, including to simultaneously charge at least one inductive chargeable device, and perform a wired charging operation to charge at least one wired chargeable device. The method further includes determining, based on the sensor data, device information for each of chargeable devices, with the determined device information including, for example, a device type, location information, and/or timing information, and controlling charging operations of the charging station to charge the chargeable devices based, at least in part, on the device information for the each chargeable devices within the charging range of the charging station.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: April 7, 2020
    Assignee: Thames Technology Holdings, Inc.
    Inventors: Scott A. Calhoun, Jay Steinmetz
  • Patent number: 10608543
    Abstract: A resonant converter includes a first switch on a primary side and a second switch coupled to the first switch, a first synchronous rectification switch on a secondary side conducted according to a switching operation of the first switch, a second synchronous rectification switch on the secondary side conducted according to a switching operation of the second switch, and a switch control circuit configured to detect a waveform of one end voltage of at least one of the first synchronous rectification switch and the second synchronous rectification switch, determine one of a below region and an above region, and differently control conduction duration of the first and second synchronous rectification switches according to a determined result.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: March 31, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Won-Tae Lee, Hyeong Seok Baek, Ji-Hoon Jang, Hang-Seok Choi, Moon-Ho Choi
  • Patent number: 10601327
    Abstract: The invention relates to an isolated DC/DC converter (1) comprising: —a first branch (A) comprising series-connected switches (MA1, MA2), the first branch (A) being connected to the input of the converter; —a second branch (B) comprising series-connected switches (MB1, MB2); —an inductance (L2) connected between the midpoints of the first and the second branch (B); —a capacitor connected across the end terminals of the second branch (B); —a third branch (C) comprising a magnetic component and connected to the midpoint of the second branch (B); wherein a series of opening and shutting actions of the switches (MA 1, MA2, MB1, MB2) converts an input voltage (Ue) into an output voltage (Uout) by means of the magnetic component.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: March 24, 2020
    Assignee: VALEO SIEMENS EAUTOMOTIVE FRANCE SAS
    Inventor: Luis DeSousa
  • Patent number: 10594226
    Abstract: An adjustable zero voltage to high voltage power supply electrically receives a voltage source and electronically receives a control signal. The adjustable zero voltage to high voltage power supply includes a first modulator generator, which provides an adjustable voltage signal equivalent to the operating range of the first modulator generator. A second modulator generator receives the adjustable voltage signal and produces a modulated signal. An adjustable pulse width modulator transmits a clock signal to the second modulator generator to control a frequency of the adjustable voltage signal and cause the second modulator generator to produce a modulated signal. A plurality of integrated circuits is configured to receive a control signal and feedback a signal to the first modulator generator and the adjustable pulse width modulator to change from a fixed frequency to a variable increasing frequency.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: March 17, 2020
    Assignee: DEAN TECHNOLOGY INC.
    Inventors: Jan Simon Reuning, Braeden Reid Levine, Erik Steven Haugarth
  • Patent number: 10594205
    Abstract: A high-frequency half-wave rectifier system of low-harmonicity and high-efficiency, which mainly comprises: a current output device having an output end and a first flow-return end respectively at both ends, a rectifying module, a resonant tuning unit, a first node, a voltage regulator module, at least one load element, a grounding portion, and at least one flow-return path. By means of the above structure, a simple circuit configuration and appropriate capacitance value setting are used to control the duty cycle of the rectifying module to approximately 74 nanoseconds and adjust the output power and improve the AC to DC conversion efficiency for the rectifying module under the low electromagnetic interference condition.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: March 17, 2020
    Assignee: NEWVASTEK CO., LTD.
    Inventors: Ming Liu, Chengbin Ma, Ming-Liang Fang, Chih-Hao Chuang
  • Patent number: 10595370
    Abstract: The present invention discloses an LED lamp adapted to work in a circuit that contains a magnetic ballast. The LED lamp comprises a bridge rectifier, a filter capacitor, an LED light source, a transistor, and a pulse width modulation controller. The bridge rectifier is configured to convert the alternating current supplied by the magnetic ballast into a direct current. The bridge rectifier comprises a first input terminal, a second input terminal, a first output terminal, and a second output terminal, where the first and second input terminals are electrically connected to the magnetic ballast. The filter capacitor is electrically connected to the first and second output terminals of the bridge rectifier. The LED light source is electrically connected to the first and second output terminals of the bridge rectifier. The transistor comprises a drain electrode, a source electrode, and a gate electrode.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: March 17, 2020
    Assignee: CURRENT LIGHTING SOLUTIONS, LLC
    Inventors: Zhu Mao, Bo Zhang, Fanbin Wang, Shuyi Qin
  • Patent number: 10566908
    Abstract: According to one aspect of the present disclosure, there is provided an apparatus that includes a first power converter stage connected to a first side of a first transformer, and a second power converter stage connected to a first side of a second transformer. The apparatus further includes an interleaved multi-bridge circuit connected to the second side of the first transformer and to the second side of the second transformer. The apparatus further includes a controller that is configured to operate the interleaved multi-bridge circuit in a parallel mode in which the second sides of the first and second transformers are in parallel at a DC terminal of the interleaved multi-bridge circuit and in a series mode in which the second sides of the first and second transformers are in series at the DC terminal.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: February 18, 2020
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Huibin Zhu, Xiaolin Mao, Heping Dai, Dianbo Fu
  • Patent number: 10566907
    Abstract: The power supply apparatus having a current resonance circuit includes a charge unit connected to a primary winding of a transformer, and storing electric charge, and a connection unit connected in series with the charge unit, and configured to switch the charge unit between a connecting state in which one of charging and discharging is enabled, and a non-connecting state, and after making the connection unit into the connecting state, while a current is flowing into either one of the first diode and the second diode, the first control unit performs transition from a halt period to an operating period of a switching operation by turning ON the switching element of the one of the first diode and the second diode, the current being flowing into the one of the first diode and the second diode.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: February 18, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Minoru Hayasaki
  • Patent number: 10541632
    Abstract: The present invention relates to a circuit arrangement and to a method for sensorless commutation of electronically commutated synchronous machines such as, for example, EC motors, wherein the terminal values at the connection terminals of the synchronous machine are processed by means of a rotor position estimator based on the EMF of the synchronous machine and of a known motor model preferably in a PLL structure for sensorless determination of rotor position information, and said information is used for commutation.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: January 21, 2020
    Assignee: ebm-papst Mulfingen GmbH & Co. KG
    Inventor: Fabian Schneider
  • Patent number: 10536087
    Abstract: A half-bridge power converter includes a transformer dividing the half-bridge power converter into a primary side and a secondary side. Disposed on the first side is a first capacitor bank and a second capacitor bank in series with the first capacitor hank, and also a bootstrap capacitor configured to be charged by current flowing through a charging current flowpath. The charging current flowpath extends at least through a pre-charging circuit located on the primary side, the pre-charging circuit being configured to reduce a voltage imbalance between the first capacitor bank and the second capacitor bank. The half-bridge power converter also includes a discharging current flowpath that extends at least through a primary winding of the transformer and the pre-charging circuit.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: January 14, 2020
    Assignee: TDK-LAMBDA AMERICAS INC.
    Inventors: Jin He, Del Hilburn