Patents Examined by Fred E Finch, III
  • Patent number: 10818446
    Abstract: A hybrid circuit configuration, particularly a protection circuit configuration, includes: at least one first external conductor segment; a first mechanical bypass switch in the first external conductor segment; a first semiconductor switch configuration connected in parallel to the first bypass switch; a first electronic control unit for activating the first semiconductor switch configuration; and a bypass switch activation unit, to which bypass switch activation unit at least one field coil of the bypass switch is connected. At least one control terminal of the bypass switch activation unit is connected to the first electronic control unit. The electronic control unit and/or the bypass switch activation unit controls the at least one field coil of the bypass switch in a preconfigured way either with at least one first electric current or one second electric current, the one second electric current being greater than the at least one first electric current.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: October 27, 2020
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventor: Kenan Askan
  • Patent number: 10819244
    Abstract: According to one aspect of the present disclosure, a single-stage converter includes a rectifying circuit and a buck-boost circuit. The buck-boost circuit includes an inductor with a center tap configured to supply an output of the buck-boost circuit to the rectifying circuit. The buck-boost circuit also includes first and second interleaved arms arranged in parallel with a voltage input of the single-stage converter. The first and second interleaved arms are each coupled to the inductor and include a plurality of switches operable to control the output of the buck-boost circuit.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: October 27, 2020
    Assignee: ABB POWER ELECTRONICS INC.
    Inventors: Yuxiang Shi, Liming Liu, Jing Xu
  • Patent number: 10819111
    Abstract: A multi-port power supply apparatus and a power supplying method thereof are provided. The multi-port power supply apparatus includes a power supply circuit, a plurality of connecting ports, a plurality of power converters, and a common control circuit. The power supply circuit is configured to provide a source electric energy to the power converters. Any one of the power converters converts the source electric energy into an output electric energy and outputs the output electric energy to the corresponding connecting port. The common control circuit dynamically adjusts the source electric energy by controlling the power supply circuit according to a plurality of voltage demands and a plurality of power demands of the connecting ports, so as to enhance voltage conversion efficiency of the multi-port power supply apparatus.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: October 27, 2020
    Assignee: VIA LABS, INC.
    Inventors: Tze-Shiang Wang, Sheng-Hsien Yen
  • Patent number: 10812024
    Abstract: In accordance with embodiments of the present disclosure, a system may include an impedance estimator configured to estimate an impedance of a load and generate a target current based at least on an input voltage and the impedance, a voltage feedback loop responsive to a difference between the input voltage and an output voltage of the load, and a current controller configured to, responsive to the voltage feedback loop, the impedance estimator, and the input voltage, generate an output current to the load.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: October 20, 2020
    Assignee: Cirrus Logic, Inc.
    Inventors: Eric J. King, John L. Melanson, Siddharth Maru
  • Patent number: 10804854
    Abstract: A tri-level converter provides three levels of power supply to a power amplifier that includes a supply path. The supply path has a first transistor and a first inherent body diode associated with the first transistor, as well as a second transistor and a second inherent body diode associated with the second transistor. A polarity of the second body diode is reversed relative to a polarity of the first body diode. A first driver is configured to drive the first transistor and the first inherent body diode to control a power supply, including a battery supply signal, to an output of the tri-level converter. The tri-level converter is coupled to a switching node.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: October 13, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Moataz Abdelsamie Abdelfattah, Mukesh Bansal, Iulian Mirea, Song Shi, Pengfei Li
  • Patent number: 10804809
    Abstract: A power converter apparatus includes a plurality of inverters where each inverter receives power from a separate DC voltage source. The apparatus includes a magnetic structure. The magnetic structure includes a primary winding for each inverter, where each primary winding is connected to an output a corresponding inverter and each primary winding is coupled to a magnetic core, and a single secondary winding coupled to one or more magnetic cores to which each primary winding is coupled. The apparatus includes a rectifier that receives an AC waveform from the secondary winding and that rectifies the AC waveform and is connected to a load at output terminals. The secondary winding includes a secondary bus and the one or more magnetic cores of the magnetic structure that are arranged to provide a pathway for the secondary winding that minimizes a length of the secondary winding.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: October 13, 2020
    Assignee: Uath State University
    Inventors: Dorai Babu Yelaverthi, Regan A Zane
  • Patent number: 10797589
    Abstract: Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the an input current drawn at an input of the power converter.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: October 6, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Manish Bhardwaj
  • Patent number: 10797603
    Abstract: The present invention discloses a method and an apparatus for controlling a flyback converter, the flyback converter including a main switch, a transformer and an auxiliary switch. The method includes: obtaining a first voltage signal and a second voltage signal, the first voltage signal representing an input voltage of the flyback converter, and the second voltage signal representing an output voltage of the flyback converter; controlling turn-on of the auxiliary switch, wherein the turn-on time period of the auxiliary switch is determined according to the first voltage signal and the second voltage signal; and turning on the main switch at ZVS condition, wherein the main switch is turned on at the time delayed for a duration of a dead time after turning off of the auxiliary switch.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: October 6, 2020
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Haibin Song, Daofei Xu, Jinfa Zhang
  • Patent number: 10784252
    Abstract: An ESD protection circuit, which protects a subject NMOS transistor coupled between an I/O pad and a ground, includes a first discharge device arranged between the I/O pad and the ground, having a trigger-on voltage that is lower than a breakdown voltage of the subject NMOS transistor; and a gate voltage control device, including a discharge NMOS transistor coupled to the ground and a gate of the subject NMOS transistor; a first PMOS transistor connected to the gate of the subject NMOS transistor and a connection node; and a first NMOS transistor connected to the connection node and the ground. The connection node is connected to the gate of the discharge NMOS transistor, and the gate of the first PMOS transistor and the gate of the first NMOS transistor are connected to each other.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: September 22, 2020
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Shao-Chang Huang, Li-Fan Chen, Chih-Hsuan Lin, Yu-Kai Wang, Hung-Wei Chen, Ching-Wen Wang, Ting-You Lin, Chun-Chih Chen
  • Patent number: 10784797
    Abstract: A power conversion system includes a controller that generates switching control signals according to duty cycles for a current switching control cycle, and adjusts the duty cycles by a non-zero offset value according to a modulation index in response to the modulation index exceeding a non-zero threshold. A method includes computing first duty cycles according to a modulation index, generating a plurality of switching control signals according to the first duty cycles in response to the modulation index being less than or equal to a non-zero threshold, computing second duty cycles offset from the first duty cycles and generating the plurality of switching control signals according to the second duty cycles in response to the modulation index exceeding the non-zero threshold.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: September 22, 2020
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Willy E. Sedano, Peizhong Yi, Brian P. Brown, Lixiang Wei
  • Patent number: 10775822
    Abstract: Disclosed is a circuit for voltage regulation, the circuit including: an amplifier operable to generate an amplifier output signal according to a reference voltage and a negative feedback voltage; an adaptive pre-driver operable to generate a bias current according to the amplifier output signal or according to the amplifier output signal and a current-dependent signal that varies with the variation of an output current, in which the bias current varies with the variation of the output current; a driving circuit operable to generate an output voltage and the output current according to the amplifier output signal; and a negative feedback circuit operable to generate the negative feedback voltage according to the output voltage. Since the bias current varies with the variation of the output current, the output impedance of the adaptive pre-driver varies with the variation of the output current so that the stability of the circuit is improved.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: September 15, 2020
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventor: Yuan-Ping Hsu
  • Patent number: 10778079
    Abstract: An integrated circuit (IC) comprises a regulator circuit, a bootstrap control circuit, and a gate driver that drives a transistor pair in buck or boost mode to switch current through an inductor. The IC has a VIN terminal coupled to receive a voltage generated from an AC power source, a STR terminal coupled to receive a voltage from a stored power source (e.g., a capacitor bank), and a HSB terminal that is capacitively coupled to the inductor. When bucking or boosting, the regulator circuit generates VDD supply voltage from the stored power source, supplies the VDD supply voltage onto the bootstrap control circuit, and the bootstrap control circuit generates a gate driver supply voltage that is supplied to the gate driver circuit. When not bucking or boosting, voltage on the HSB terminal is maintained between a voltage threshold from the AC power source without draining the stored power source.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: September 15, 2020
    Assignee: Active-Semi, Inc.
    Inventors: Thuc Huu Lam, Khanh Quang Dinh, Tung Van Nguyen, Hue Khac Trinh
  • Patent number: 10778115
    Abstract: In a power conversion system, if data communication between first to third control circuits is normal, then a ring-shaped first communication path is formed by the first to third control circuits and first communication lines of first to third communication cables, and a ring-shaped second communication path is formed by the first to third control circuits and second communication lines of the first to third communication cables. For example, if the data communication between the first and second control circuits is abnormal, a ring-shaped third communication path is formed by the first and second communication lines of the second and third communication cables and the first to third control circuits.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: September 15, 2020
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Kenta Hayashi
  • Patent number: 10763755
    Abstract: A power transfer system includes power conversion circuitry that has first circuitry and second circuitry on either side of a transformer that include a transformer having a power supply, a switch, a capacitor connected in parallel with a winding of the transformer, and an inductor connected between the power supply and the capacitor. The inductor provides an additional resonance current path through the power conversion circuitry that is configured to reduce a peak voltage at the switch. A direction of power transfer through the power conversion circuit is determined, and the first circuitry and the second circuitry are configured based on the determined direction of power transfer. The switches of the first circuitry and second circuitry are controlled using switching based on the determined direction of power transfer and a quantity of power transfer.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: September 1, 2020
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventor: Masanori Ishigaki
  • Patent number: 10756639
    Abstract: A secondary controller applied to a secondary side of a power converter includes a control signal generation circuit, a voltage detection signal generation circuit, and a gate control signal generation circuit. The control signal generation circuit generates a short-circuited control signal to a short winding switch after a gate control signal to make the short winding switch be turned on. When an output voltage of the power converter is less than a predetermined voltage, the voltage detection signal generation circuit generates a first detection signal to the control signal generation circuit. The control signal generation circuit further generates a gate pulse control signal according to the first detection signal. The gate control signal generation circuit generates a gate pulse signal according to the gate pulse control signal, wherein the gate pulse signal is used for making a primary side of the power converter be turned on.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: August 25, 2020
    Assignee: Leadtrend Technology Corp.
    Inventors: Chung-Wei Lin, Hung-Ching Lee
  • Patent number: 10756642
    Abstract: A configurable power converter includes a chassis, a plurality of circuit terminals, power conversion hardware, and a controller. The chassis has an exterior and defines an interior cavity. The plurality of circuit terminals are coupled to the exterior of the chassis. The power conversion hardware is disposed within the interior cavity of the chassis and connected to the plurality of circuit terminals. The power conversion hardware includes at least one of a plurality of electrical switches, a plurality of capacitors, or a plurality of inductors.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: August 25, 2020
    Assignee: EPC Power Corporation
    Inventors: Devin Dilley, Ryan Smith
  • Patent number: 10747246
    Abstract: A power supply circuit includes a first comparator, a second comparator, a first voltage regulator, an output terminal, a first path and a second path. The first comparator compares a first input voltage with a first reference voltage to generate a first control signal. The second comparator compares a second input voltage with the first reference voltage to generate a second control signal. A voltage level of the second input voltage is different from a voltage level of the first input voltage. The first voltage regulator is selectively enabled based on the first control signal and the second control signal, and generates a first voltage based on the first input voltage. A voltage level of the first voltage is substantially the same as the voltage level of the second input voltage. The output terminal is configured to output one of the second input voltage and the first voltage as a power supply voltage. The first path directly provides the first input voltage to the first voltage regulator.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: August 18, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Won Kang, In-Hyuk Go, Nam-Su Kim, Eun-Ji Moon, Jae-Sang Yun
  • Patent number: 10737586
    Abstract: Implementations described and claimed herein provide systems and methods for supplying voltage to a load and battery. In one implementation, an unregulated DC-to-DC converter is electrically connected to a first energy source to down convert a first voltage supplied by the first energy source. A load is electrically connected to the unregulated DC-to-DC converter to receive the down converted first voltage. A regulated DC-to-DC converter is electrically connected to the unregulated DC-to-DC converter to regulate the down converted first voltage to a second voltage. A second power source is electrically connected to the regulated DC-to-DC converter to charge the second power source using the second voltage, and the second power source is switchably connectable to the load.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: August 11, 2020
    Inventors: Jeffrey M. Alves, Peng Wu, Yehonatan Perez, Kisun Lee, Philip Juang
  • Patent number: 10742018
    Abstract: An earth leakage circuit breaker includes a current sensing unit configured to sense current in a circuit, a converter configured to detect a fundamental wave component and a specific harmonic component from the sensed current, the specific harmonic component being one of a plurality of harmonic components, and a controller. The controller is configured to compare a harmonic component ratio with a threshold component ratio, to determine whether the sensed current is abnormal current, and to control cutoff of the circuit according to the result of determination. The harmonic component ratio is a ratio of the specific harmonic component to the fundamental wave component. The converter is configured to convert the sensed current from an analog signal into digital data and to perform Fourier transform with respect to the converted digital data to detect the fundamental wave component and the specific harmonic component.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: August 11, 2020
    Assignee: LSIS CO., LTD
    Inventors: Jaeshik Yoon, Hyunyoung Jung, Jaeyoung Yu
  • Patent number: 10727745
    Abstract: A system that provides intelligent constant on-time control may include a first switch coupled to a power input; a second switch coupled to the first switch; a switching node between the first switch and the second switch, the switching node configured to be connected to an inductor and a power output; feedback paths coupled to (1) the switching node and (2) the power output, the feedback paths enabling feedback of signals from (1) the switching node, and (2) the power output; and a processor coupled to the feedback paths. The processor may be configured to control a voltage at the power output based on a combination of the signals carried by the feedback paths.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: July 28, 2020
    Assignee: Kinetic Technologies
    Inventors: Xin Zhang, Jan Nilsson, William Robert Pelletier