Patents Examined by Gary L. Laxton
  • Patent number: 10606294
    Abstract: A low dropout voltage regulator, coupled to a load circuit receiving a clock signal, includes an amplifier; a power transistor comprising a control terminal, coupled to an output terminal of the amplifier; and a first terminal, coupled to a positive input terminal of the amplifier and the load circuit; and a control circuit, configured to control a current flowing through the power transistor in response to the clock signal.
    Type: Grant
    Filed: January 6, 2019
    Date of Patent: March 31, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Liang-Ting Kuo, Mu-Jung Chen, Chi-Chun Liao
  • Patent number: 10599172
    Abstract: There is to provide a power circuit capable of stabilizing an internal power source voltage and assuring a normal operation of a load circuit. According to one embodiment, the power circuit includes a regulator which generates an output voltage using an entered input voltage, a voltage detecting circuit which detects the output voltage, and a clamp circuit which outputs an internal power source voltage based on the output voltage and in a first failure that the output voltage is larger than a predetermined first voltage, outputs the internal power source voltage suppressed to the first voltage and less, in which the clamp circuit outputs the internal power source voltage to the logic circuit which operates with the internal power source voltage of the first voltage and less and the voltage detecting circuit outputs the first failure to the logic circuit when detecting the first failure.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: March 24, 2020
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Kentaro Hayashi, Yutaka Hayashi
  • Patent number: 10601340
    Abstract: An electrical configuration contains at least one submodule which has a first and a second outer electrical terminal. The configuration further has a bypass switching device, which is electrically connected between the first and second terminals and in the on-state causes an electrical short-circuit in at least one current flow direction between the two outer terminals. The bypass switching device has a thyristor with an anode terminal, a cathode terminal and a trigger terminal and is connected by its anode terminal to one of the two outer terminals and by its cathode terminal to the other of the two outer terminals. A triggering device is connected to the trigger terminal of the thyristor for triggering the thyristor, and a switch is provided which in the on-state connects the anode terminal of the thyristor to the trigger terminal of the thyristor.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: March 24, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Joerg Dorn, Daniel Schmitt, Frank Schremmer, Marcus Wahle, Felix Hacker
  • 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: 10594217
    Abstract: An asymmetric two-stage DC-DC switching converter, using multi-stage phases, in parallel to single-stage phases, to supply an output voltage, is described. An intermediate voltage supply is used to provide supply to some second-stage phases. Several different silicon dies are used to implement a multi-phase DC-DC switching converter, where different phases are located on different dies, and different silicon processes are used to implement the different dies. The silicon die containing the faster phases, and the fast-response control circuitry, is placed closer to the load, than the silicon die containing the slower phases, and the larger value inductors. A single control signal is used to control all the single-stage and second-stage phases. A way of implementing a control scheme for the second-stage phases that allows them to operate independently from the first-stage phases, but still regulate correctly in the DC-DC switching converter system, is described.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: March 17, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Mark Childs
  • Patent number: 10594313
    Abstract: Systems and methods for adaptive modulation of MOSFET driver key parameters for improved voltage regulator efficiency and reliability in a voltage regulator may include a power stage. The power stage may include a high side switch including a high side gate, a peak voltage detection circuit, and a high side driver strength modulator circuit. The high side driver strength modulator circuit may determine a high side driver strength level. The high side driver strength modulator circuit may also connect a subset of the set of high side gate drivers to the high side gate based on the high side driver strength level. The high side driver strength modulator circuit may also disconnect a remaining subset of the set of high side gate drivers from the high side gate.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: March 17, 2020
    Assignee: Dell Products L.P.
    Inventors: Kejiu Zhang, Shiguo Luo, Ralph H. Johnson
  • Patent number: 10587120
    Abstract: A solar module can have its output processed based on the frequency responses. The high and low frequency responses can be processed separately, thus allowing the solar module to respond optimally to the rapid fluctuation of power generation, such as due to changes in weather.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: March 10, 2020
    Inventor: Manhal Aboudi
  • Patent number: 10581342
    Abstract: A system includes a voltage converter and a controller for controlling the operation of the voltage converter. The voltage converter includes a plurality of legs, wherein each leg includes a first and a second set of silicon (Si)-based power devices. The first set of Si-based power devices includes a first and second Si-based power devices connected to each other at a first interconnection node and the second set of Si-based power devices includes a third and fourth Si-based power devices connected to each other at a second interconnection node. The first and second set of Si-based power devices are coupled across a first and second DC voltage sources respectively. A first set of Silicon-Carbide (SiC) based power devices is coupled across the first and second interconnection nodes. The system also includes a snubber capacitor connected across the first and the second interconnection nodes.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: March 3, 2020
    Assignee: General Electric Company
    Inventors: Di Zhang, Jiangbiao He, Sachin Madhusoodhanan
  • Patent number: 10574149
    Abstract: A converter circuit, comprising: a supply node and an output node of the converter circuit, a half-bridge arrangement coupled to the supply node and including a pair of electronic switches alternatively switchable between conductive and non-conductive states with a drive node therebetween, a transformer with a primary winding driven by the drive node and a secondary winding including two portions with a center tap node coupled to the output node of the converter circuit and an inductive component. The inductive component including two magnetically coupled winding halves with a respective center tap node, the inductive component being coupled to the ends of the secondary winding of the transformer with the respective center tap node coupled to the output node of the converter circuit.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: February 25, 2020
    Assignee: OSRAM GMBH
    Inventor: Francesco Angelin
  • Patent number: 10574153
    Abstract: Disclosed is a three phase Vienna converter for converting three phase AC to DC, with active power factor control. Further the control electronics is galvanically isolated from the neutral of the input three phase supply and also from the center terminal of the two series connected output DC filter capacitors. The control circuit is built completely with analog devices to meet stringent electromagnetic interference standards. The converter is capable of operating over a wide range of voltages and frequencies of the input supply voltage.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: February 25, 2020
    Assignee: AMETEK ROTRON
    Inventors: Basil Issac, Leslie W Yoho, Matthew Clark
  • Patent number: 10571942
    Abstract: The overcurrent limiting circuit includes: a limit voltage generation circuit generating a limit voltage which defines the limit current value as a current corresponding to a magnitude of a power supply voltage; a source follower having an output terminal and an input terminal which is connected to a gate of the output stage transistor, and configured to supply from the output terminal a voltage level-shifted from a voltage provided to the input terminal; an error amplifier circuit amplifying a difference between the limit voltage and the voltage supplied from the source follower; and a gate voltage adjustment transistor having a gate to which the voltage supplied from the error amplifier circuit is applied, and controlling a gate voltage applied to the gate of the output stage transistor.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: February 25, 2020
    Assignee: ABLIC INC.
    Inventor: Tsutomu Tomioka
  • Patent number: 10574058
    Abstract: A power conversion apparatus includes a power converter, a target command controller, a feedback controller, and a gain adjustor. The power converter is configured to convert first power supplied from a power generation source into second power. The target command controller is configured to increase or decrease a target command so as to cause the first power to follow maximum suppliable power of the power generation source. The feedback controller is configured to control the power converter by feedback control that is based on a deviation between the target command and at least one of a supplied voltage and a supplied current supplied from the power generation source to the power converter. The gain adjustor is configured to adjust a gain of the feedback control based on at least one of the supplied voltage, the supplied current, and the target command.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: February 25, 2020
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Hirotaka Toujinbara, Takashi Kuboyama, Daishi Ueno
  • Patent number: 10574154
    Abstract: A scalable universal space vector pulse-width modulation (SVPWM) scheme for multilevel inverters is disclosed. In the disclosed SVPWM scheme, the modulation triangle is quickly identified based on a coordinate transformation from an ?-? coordinate system to a 120° oblique coordinate system. Then, the duty cycles and switching states of the three vertices of the modulation triangle are determined by simple algebraic computations. In a switching period, any vertex of the modulation triangle can be flexibly selected as the start point to optimize the switching sequence with flexibly adjustable duty cycle(s) for the redundant switching state(s) according to specific applications.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: February 25, 2020
    Assignee: NUtech Ventures
    Inventors: Wei Qiao, Fa Chen, Liyan Qu
  • Patent number: 10574139
    Abstract: A reference signal generator includes a voltage reference, an amplifier coupled to the voltage reference, and a precharge circuit coupled to the amplifier. The voltage reference is configured to generate a constant voltage. The amplifier is configured to receive the constant voltage from the voltage reference and generate a regulating primary output signal and a non-regulating secondary output signal. The precharge circuit is configured to charge a noise reduction capacitor with the non-regulating secondary output signal.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 25, 2020
    Assignee: Texas Instruments Incorporated
    Inventor: Roy Alan Hastings
  • Patent number: 10566903
    Abstract: A phase-redundant voltage regulator apparatus includes groups of regulator phases, each having a multi-phase controller (MPC) connected to each regulator phase. The MPC transfers, to control logic, phase fault signals and a shared current (ISHARE) phase control signal received from the regulator phases of a phase group. Spare regulator phases include output ORing devices to limit current flow into spare regulator phase outputs. Output switching devices are configured to electrically couple spare regulator phase outputs to a common regulator output. Control logic is connected to the phase groups MPC and asserts phase enable signals to, transfers ISHARE phase control signals to, and receives phase fault signals from the spare regulator phases. The control logic electrically interconnects a spare regulator phase to a phase group including a failed regulator phase in response to receiving a phase fault signal from an MPC.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: February 18, 2020
    Assignee: International Business Machines Corporation
    Inventors: Michael Lee Miller, Eric B. Swenson, Patrick Egan
  • Patent number: 10560025
    Abstract: A switching power converter is configured to control switching noise by implementing a plurality of pulse width modulation modes of operation. The peak current in each pulse width modulation mode of operation is controlled so that an output power for the switching power converter is continuous with regard to transitions between the pulse width modulation modes.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: February 11, 2020
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: John Shi, John Kesterson, Cong Zheng, Kai-Wen Chin
  • Patent number: 10560023
    Abstract: A circuit for a multi-phase power regulator including a power stage with a first phase and a second phase, the circuit including phase management circuitry coupled to the first phase and the second phase to control the first phase and the second phase, a first comparator coupled to an output of the multi-phase power regulator to compare a value of the output of the multi-phase power regulator to a first threshold value to produce a first comparison result, and phase shedding circuitry coupled to the first comparator and the phase management circuitry to control the phase management circuitry to activate or deactivate the second phase based at least partially on the first comparison result.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: February 11, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: Kuang-Yao Cheng, Wenkai Wu, Preetam Tadeparthy, Nancy Zhang, Dattatreya Baragur Suryanarayana, Naga Venkata Prasadu Mangina
  • Patent number: 10560020
    Abstract: A method can be used for compensating a voltage drop on a cable connected between a source device and a receiver device. The source device delivers an offset current on a channel configuration pin of the source device, the offset current causing an increase in a voltage on the channel configuration pin of the source device to a chosen reference voltage. The offset current is stored in the source device. The source device absorbs an absorption current originating from the channel configuration pin of the source device, the absorption current depending on the stored offset current and on the voltage drop. The source device generates a compensated supply voltage on a power supply pin of the source device, the compensated supply voltage equal to a reference supply voltage increased by the voltage drop to within a tolerance.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: February 11, 2020
    Assignee: STMICROELECTRONICS (ALPS) SAS
    Inventor: Alexandre Pons
  • Patent number: 10560056
    Abstract: Power consumption of a signal processing circuit is reduced. Further, power consumption of a semiconductor device including the signal processing circuit is reduced. The signal processing circuit includes a reference voltage generation circuit, a voltage divider circuit, an operational amplifier, a bias circuit for supplying bias current to the operational amplifier, and first and second holding circuits. The first holding circuit is connected between the reference voltage generation circuit and the bias circuit. The second holding circuit is connected between the voltage divider circuit and a non-inverting input terminal of the operational amplifier. Reference voltage from the reference voltage generation circuit and reference voltage from the voltage divider circuit can be held in the first and second holding circuits, respectively, so that the reference voltage generation circuit can stop operating. Thus, power consumption of the reference voltage generation circuit can be reduced.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: February 11, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kei Takahashi, Yoshifumi Tanada
  • Patent number: 10560029
    Abstract: A controller for increasing efficiency of a power converter includes a comparison module and a gate signal generation unit. The comparison module is used for generating a detection voltage according to a direct current (DC) input voltage of a primary side of the power converter, and comparing the detection voltage with a predetermined value to generate a comparison result. The gate signal generation unit is used for changing a sink current flowing through a gate pin of the controller according to the comparison result, wherein the gate pin of the controller is coupled to a power switch of the primary side of the power converter.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: February 11, 2020
    Assignee: Leadtrend Technology Corp.
    Inventors: Ming-Chang Tsou, Shun-Yao Liu, Jiun-Sheng Huang