Patents Examined by Yusef A Ahmed
  • Patent number: 10454384
    Abstract: A switching power supply is provided which includes an input for an input current at an input voltage, a controlled transistor bridge having two branches each with two transistors, the two branches being connected in parallel to the input terminals, a transformer having a primary connected between the midpoints of the two branches formed between the transistors of each branch, an output for an output current connected to the terminals of a secondary circuit of the transformer, and a control unit for the transistors to alternately switch each of the midpoints between high and low values with a time offset between the switching times of the midpoint values. The control unit is also capable of ensuring that the time order for switching of the midpoints between the high and low values thereof varies over the course of time.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: October 22, 2019
    Assignee: DEVIALET
    Inventors: Mathieu Pernot, Alexandre Huffenus, Pierre-Emmanuel Calmel
  • Patent number: 10454359
    Abstract: A method of commutation in a matrix rectifier from an active vector to a zero vector includes two steps. A method of commutation in a matrix rectifier from a zero vector to an active vector includes three steps.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 22, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tao Zhao, Dewei Xu, Jahangir Afsharian, Bing Gong, Zhihua Yang
  • Patent number: 10454369
    Abstract: A switched voltage converter may be controlled with load current feedforward control loop in addition to an output voltage feedback loop. The converter includes a first switch device that is controlled to open and close at a selected switching rate with a selected duty cycle. The first switch device is coupled in series with an inductor and conducts current through the inductor while the first switch is closed. A second switch device conducts current from the inductor to an output capacitor and to load while the first switch is open to produce an output voltage and a resulting load current through the load. The load current is measured in a continuous manner and a load current feedforward control signal is generated that is representative of the load current. The switch rate and/or duty cycle of the first switch is adjusted in response to the load current feedforward control signal.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: October 22, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Filip Savic, Giacomo Calabrese, Giovanni Frattini
  • Patent number: 10454371
    Abstract: Various embodiments of the invention provide for a buck-boost circuit that is immune against being stuck in an undesirable mode of operation. The circuit does not require any additional intermediate states other than buck-mode and boost-mode when managing transitions between buck and boost mode. In certain embodiments, a robust and simple buck-boost topology ensures efficient and rapid transitions by operating comparators that are coupled to switching elements of the buck-boost in such a manner that the inductor current can be selectively monitored to detect an inductor current slope during a power transfer phase. Information about the current slope enables a controller to make a decision whether a transition to another state is appropriate.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: October 22, 2019
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Marco Masini, Federico Mazzarella
  • Patent number: 10454364
    Abstract: This power conversion device includes: a rectification circuit; an inverter circuit having a full-bridge configuration, and having a DC capacitor, and first and second legs each of which has two switching elements connected in series to each other; a transformer; and a control circuit for controlling operation of the inverter circuit, wherein the control circuit controls an ON period for the first leg, thereby controlling increase/decrease in current flowing through a first rectification circuit from an AC input, and controls an ON period for the second leg and a phase shift amount between the ON period for the first leg and the ON period for the second leg, thereby controlling voltage of the DC capacitor to be constant. Thus, it becomes possible to achieve high-power-factor control and output power control at the same time by a single stage of full-bridge inverter circuit.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: October 22, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroto Mizutani, Ryota Kondo, Takaaki Takahara
  • Patent number: 10454378
    Abstract: System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes an operation-mode-selection component and a driving component. The operation-mode-selection component is configured to receive a first signal related to an output load of the power conversion system and a second signal related to an input signal received by the power conversion system and output a mode-selection signal based on at least information associated with the first signal and the second signal. The driving component is configured to receive the mode-selection signal and generate a drive signal based on at least information associated with the mode-selection signal, the driving signal corresponding to a switching frequency.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: October 22, 2019
    Assignee: On-Bight Electronics (Shanghai) Co., Ltd.
    Inventors: Yuan Lin, Xiaomin Huang, Qiang Luo, Lieyi Fang
  • Patent number: 10447170
    Abstract: Provided herein are systems and methods related to an inverter module of a drivetrain system of an electric vehicle. The inverter module can include multiple power modules to form a three phase inverter module to power an electric vehicle. The power modules can be arranged or organized within the inverter module to reduce a footprint of the inverter module and reduce an inductance of the inverter module. The power modules can be arranged within the inverter module in a row like or queue like formation such that a first row of power modules is disposed along a first side of the inverter module and a second row of power modules is disposed along a second side of the inverter module. The positioning of the power modules can reduce an inductance value of the paralleled power loop formed by the multiple power modules, reducing an inductance of the inverter module.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: October 15, 2019
    Assignee: SF Motors, Inc.
    Inventors: Tong Wu, Zhong Nie, Duanyang Wang
  • Patent number: 10447174
    Abstract: An apparatus utilizing additive interleaved switchmode (PWM) power conversion stages, having minimal or no output filter, to achieve high bandwidth or even ideally instantaneous power conversion. The additive process may involve voltage stacking of isolated PWM converters, which are interleaved in time, or may involve a single input power supply and inductively combining output currents of PWM power converters interleaved in time, with either additive circuit having minimal or no output filtering. This circuit may overcome limitations for the frequency of feedback control loops once thought to be physical limitations, such as, fundamental switching frequency, output filter delay and the Nyquist criteria.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: October 15, 2019
    Assignee: ADVANCED ENERGY INDUSTRIES, INC.
    Inventors: Robert M. Porter, Jr., John Dorrenbacher
  • Patent number: 10447146
    Abstract: For the purpose of power factor correction, an inductance (21) is supplied with an input voltage (Vin), wherein a controllable switching means (24) that is coupled to the inductance (21) is actuated in order to selectively charge and discharge the inductance (21). A control device (14) for actuating the switching means (24) is designed such that it actuates the switching means (24) selectively on the basis of one of a plurality of modes of operation. In a first mode of operation, a switch-on time is stipulated for the switching means (24) on the basis of a minimum waiting time and on the basis of a voltage that drops across the switching means (24).
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: October 15, 2019
    Assignee: TRIDONIC GMBH & CO KG
    Inventors: Hans Auer, Peter Lampert
  • Patent number: 10439400
    Abstract: An electrical assembly comprises a power converter including first and second DC terminals and an AC terminal. The electrical assembly also includes a grounding circuit to connect the AC terminal to ground. The grounding circuit defines first and second current flow paths between the AC terminal and ground. The first current flow path includes a switching element. The second current flow path includes a first current flow control element that is configured to operate in a first mode in which it reduce the flow of current between the AC terminal and ground when the first current flow path is open. The electrical assembly additionally includes a control unit configured to operate the switching element to maintain open the first current flow path following an occurrence of a DC network fault. The power converter is configured to continue transferring power between the DC and AC networks throughout the DC network fault.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: October 8, 2019
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Carl David Barker, Andre Paulo Canelhas
  • Patent number: 10439489
    Abstract: A hybrid-mode boost power factor corrector includes an inductor, a switch unit, a diode unit, a current-detecting unit, and a control unit. The inductor is coupled to a DC input power source. The switch unit is coupled to the inductor and a ground. The diode unit is coupled to the inductor and the switch unit. The current-detecting unit receives an inductor current flowing through the inductor and provides a current detection signal corresponding to the inductor current. The control unit is coupled to the current-detecting unit to receive the current detection signal. When the hybrid-mode boost power factor corrector is operated in a light-load condition, the control unit samples a peak value of the current detection signal; when the hybrid-mode boost power factor corrector is operated in a heavy-load condition, the control unit samples an average value of the current detection signal.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: October 8, 2019
    Assignee: Chicony Power Technology Co., Ltd.
    Inventors: Hsien-Yi Tsai, Yu-Chen Liu
  • Patent number: 10439501
    Abstract: A resonant power converter and a frequency tracking method for a resonant power converter are disclosed to determine a resonant status of the resonant power converter by sampling a secondary current, thereby controlling frequency of a drive signal. Therefore, the frequency of the drive signal tracks resonant frequency of the resonant power converter. The resonant power converter includes an inverter branch, which connected to the inverter branch, a transformer connected to the resonant branch, and a rectification and filtering branch connected to the transformer. A primary side of the transformer is connected to the resonant branch, and a secondary side of the transformer is connected to the rectification and filtering branch. A detection branch is connected to both the secondary side of the transformer and the rectification and filtering branch.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: October 8, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ce Liu, Zhixian Wu
  • Patent number: 10439491
    Abstract: A power supply electronic circuit comprises: an intermediate bus converter (IBC), arranged to convert a voltage inputted to the IBC to an intermediate bus voltage on an intermediate bus; at least one direct current to direct current (DC-DC) or point of load (POL) converter, connected to the intermediate bus and arranged to convert the intermediate bus voltage to a voltage for feeding a load; and a capacitor tank connected to the intermediate bus and arranged as hold up capacitor tank to preserve power supply to the load. The IBC comprises a current ripple control circuit for suppressing current ripple in an input of the power supply electronic circuit.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: October 8, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Jingxu Gu
  • Patent number: 10439390
    Abstract: A multi-port power supply apparatus and its operation method are provided. The multi-port power supply apparatus includes a voltage source circuit, a first voltage converter, a second voltage converter and a first common control circuit. The voltage source circuit provides a source voltage. The first voltage converter converts the source voltage into a first output voltage and outputs the first output voltage to a first connecting port of the multi-port power supply apparatus. The second voltage converter converts the source voltage into a second output voltage and outputs the second output voltage to a second connecting port of the multi-port power supply apparatus. The first common control circuit adjusts the source voltage according to a first voltage demand of the first connecting port and a second voltage demand of the second connecting port. Thus, a voltage conversion efficiency of the multi-port power supply apparatus is enhanced.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: October 8, 2019
    Assignee: VIA LABS, INC.
    Inventors: Nai-Chuan Hung, Hung-Chih Chiu
  • Patent number: 10439506
    Abstract: An electric converter system including modules nested inside one another which have at least two levels of nesting is disclosed. At least one embedded module of a first nesting level is provided, which includes at least two electrical connections and a power train. The power train includes at least two embedded modules nested with each other of an at least second next lower nesting level, such that the modules are embedded inside one another. Each of the modules has switching elements for dynamically switching between switch states between at least two modules of a nesting level. A method for providing an electrical converter system is also disclosed.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: October 8, 2019
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventor: Stefan Götz
  • Patent number: 10439512
    Abstract: According to one aspect, embodiments of the invention provide a power supply system comprising an input, an output, a neutral point, a converter configured to convert input AC power into converted DC power, the converter including a first converter switch, a positive DC bus configured to receive the converted DC power, a negative DC bus configured to receive the converted DC power, an inverter configured to convert DC power from the positive and negative DC busses into output AC power, the inverter including a first inverter switch, and a clamp circuit coupled to the positive DC bus and coupled across at least one of the first converter switch and the first inverter switch, the clamp circuit configured, during switching operation, to clamp a voltage across the first converter switch and/or the first inverter switch to a voltage level of the positive DC bus or the negative DC bus.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: October 8, 2019
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventor: Jonas Sonsby Mouridsen
  • Patent number: 10432157
    Abstract: One example includes a transconductor system. The system includes a first transconductance amplifier that generates a control current in response to a first input voltage. The system also includes a second transconductance amplifier that generates an output signal in response to a second input voltage. The system further includes an intermediate amplifier that generates a control voltage in response to the control current and a third input voltage. The control voltage can be provided to the first and second transconductance amplifiers to set a transconductance of each of the first and second transconductance amplifiers to be approximately equal.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: October 1, 2019
    Assignee: Texas Instruments Incorporated
    Inventor: Ryan Erik Lind
  • Patent number: 10432092
    Abstract: A controller is configured to perform self-calibration to maintain approximately a desired switching frequency of a power converter. The self-calibration performed by the controller at least partially mitigates detrimental effects associated with variation in an actual switching frequency of the power converter from a designed switching frequency. The controller maintains approximately the desired switching frequency, in one example, in view of a delay inherent in the control by the controller of the power converter.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: October 1, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Zhangyi Xie, Zhenglin Pu, Yu Wang
  • Patent number: 10429875
    Abstract: A power management circuit generates a reference voltage and distributes it to a plurality of independently-enabled regulator voltage reference circuits, each of which generates a predetermined voltage for a voltage regulator. Separate enable signals and enable pre-charge signals are distributed to each regulator voltage reference circuit. As a regulator voltage reference circuit is enabled via its associated enable signal, an enable pre-charge signal is also asserted for an initial duration. Each regulator voltage reference circuit includes a voltage setting circuit and a first current limiting transistor in series and operative to interrupt current to the voltage setting circuit when the regulator voltage reference circuit is disabled. A second current limiting transistor is configurably configured as a current mirror with the first current limiting transistor, and a pre-charge bias current from a current source passes through the second transistor.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: October 1, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mikko Lintonen, Marko Pessa
  • Patent number: 10423178
    Abstract: A low dropout (LDO) regulator includes an NMOS transistor, a resistor ladder, an error amplifier and a gate boosting circuit. The NMOS transistor is configured for receiving an input voltage to generate an output voltage. The resistor ladder, coupled to the NMOS transistor, is configured for generating a feedback signal according to a level of the output voltage. The error amplifier, coupled to the resistor ladder, is configured for receiving the feedback signal from the resistor ladder to generate a control signal. The gate boosting circuit, coupled between the NMOS transistor and the error amplifier, is configured for boosting the control signal to control the NMOS transistor, so as to pull the output voltage to a target level.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: September 24, 2019
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventor: Weirong Chen