Patents Examined by Nusrat Quddus
  • Patent number: 11329565
    Abstract: The present invention provides regulation for an output voltage of a DC-DC voltage converter. The controlled variable provided to the regulator of the DC-DC voltage converter is in this case made up of a controlled variable from a voltage regulator and a further controlled variable from an initial controller. The controlled variable from the voltage regulator is in this case obtained directly from the comparison of the output voltage with a setpoint voltage. The controlled variable from the initial controller takes into consideration, inter alia, the input voltage of the DC-DC voltage converter, the value of the input DC voltage being able to be corrected such that the voltage regulator can be operated close to the zero point during steady-state operation. In this manner, faster and more precise regulation of the output voltage is obtained.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: May 10, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Patent number: 11329547
    Abstract: A primary controller applied to a primary side of a power converter includes a ripple cancellation circuit, a compensation voltage generation circuit, and a gate control signal generation circuit. The ripple cancellation circuit generates an adjustment according to a current flowing through a feedback pin of the primary controller during turning-on of a power switch of the primary side of the power converter. The compensation voltage generation circuit generates a compensation voltage of a compensation pin of the primary controller according to the adjustment, a reference voltage, and a feedback voltage of the feedback pin. The gate control signal generation circuit generates a gate control signal to the power switch to reduce an output voltage of a secondary side of the power converter according to the compensation voltage and a detection voltage.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: May 10, 2022
    Assignee: Leadtrend Technology Corp.
    Inventors: Hsin-Hung Lu, San-Yi Li
  • Patent number: 11320319
    Abstract: The present disclosure provides a circuit for generating a complimentary to absolute temperature (CTAT) voltage reference. The primary contributor to the voltage reference is first bipolar junction transistor, which is configured in diode mode, to produce the CTAT voltage. Such references include a non-linear component. A pair of bipolar junction transistors are coupled to the first bipolar junction transistor, and are configured to generate a delta base-emitter voltage. By coupling one of the pair to a proportional to absolute temperature current source, and the other to a current course which is substantially independent of absolute temperature, a further non-linear component is introduced, which is complimentary to the non-linear component introduced by the first bipolar junction transistor. The pair of bipolar transistors share a common emitter area size.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: May 3, 2022
    Assignee: Analog Devices International Unlimited Company
    Inventor: Viorel Bucur
  • Patent number: 11303219
    Abstract: A power conversion apparatus is provided in a rotary electric machine, converting a power between a DC power source and the rotary electric machine having a multiphase winding. The power conversion apparatus includes: a plurality of switching modules each having a switching element for performing switching to control a current direction of a current flowing from the DC power source to the winding; a plurality of capacitor modules each having a capacitor that suppresses high frequency oscillation occurring on the current due to the switching operation; a positive side conductor connected to a positive electrode of the DC power source; and a negative side conductor connected to a negative electrode of the DC power source.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: April 12, 2022
    Inventors: Takashi Kashiwazaki, Tomohisa Sano
  • Patent number: 11281244
    Abstract: A voltage regulator having a current limiter for over-current protection is disclosed. The current limiter is powered by a current or currents derived from an output current. In a no-load condition, in which the output current is zero, the current or currents powering the current limiter may be zero. As the output current increases, however, the current or currents powering the current limiter may grow in proportion. Thus, the current limiter can have zero quiescent current in a no-load condition but may be powered to protect the voltage regulator in a high-current condition.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: March 22, 2022
    Inventor: Jiri Matyscak
  • Patent number: 11275399
    Abstract: There is provided a reference voltage circuit which includes a depletion type transistor and an enhancement type transistor. At least one of the depletion type transistor and the enhancement type transistor is formed from a plurality of transistors and the reference voltage circuit is arranged in the form of a common centroid (common center of mass) to avoid the influence of a characteristic fluctuation due to stress from the resin encapsulation of a semiconductor device or the like.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: March 15, 2022
    Assignee: ABLIC INC.
    Inventors: Masakazu Sugiura, Fumihiko Maetani
  • Patent number: 11264982
    Abstract: A high voltage driving circuit for driving a load receives a low voltage input signal and generates a high voltage output signal. A short circuit protection circuit including a first electronic switch operated by the low voltage input signal and a second electronic switch operated by a low voltage signal obtained by a voltage division of the output high voltage signal. The first electronic switch causing a first pull-up current to be sent to a capacitive element whose voltage controls an input of a threshold comparator. A second electronic switch causes a second pull-down current to be drawn from the capacitive element whose voltage controls the input of the threshold comparator. A short circuit detection signal is generated at an output of said threshold comparator, indicating a short circuit and capable of inhibiting operation of the driving circuit.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: March 1, 2022
    Assignee: STMicroelectronics S.r.l.
    Inventors: Marco Terenzi, Davide Ugo Ghisu
  • Patent number: 11258365
    Abstract: A power converter is provided. A driver circuit is connected between a controller circuit and a switch circuit. The switch circuit is connected to an inductor. The inductor is connected in series with a first capacitor and grounded through the first capacitor. A first comparison input terminal of a first comparator is connected to an output terminal between the inductor and the first capacitor. A second comparison input terminal of the first comparator is grounded through a second capacitor. The controller circuit outputs a control signal for controlling the driver circuit to drive the switch circuit according to a comparison signal outputted by the first comparator. A reference current source provides a reference current to the second capacitor. A first terminal of a first resistor is connected to the second capacitor. A second terminal of the first resistor is coupled to a reference potential.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: February 22, 2022
    Inventors: Jen-Chien Hsieh, Tsung-Yu Wu
  • Patent number: 11237582
    Abstract: A power supply device includes a power supply circuit configured to generate a direct current output voltage to be applied to both ends of a plurality of loads serially coupled, a detection circuit configured to detect an anomaly of a load voltage applied to each of the plurality of loads, and an adjustment circuit configured to decrease the output voltage in accordance with a number of abnormal loads where the anomaly is detected among the plurality of loads.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: February 1, 2022
    Inventors: Tatsuo Araki, Hironobu Kageyama
  • Patent number: 11239654
    Abstract: A three-stage surge protection device protects against complex, time-variant voltage transients, including those resulting from a high-altitude nuclear electromagnetic pulse or a solar coronal mass ejection. The device relies on interaction between a snubbing low-pass filter, a transient voltage suppressor, and an electronic crowbar circuit. The low-pass filter significantly lowers the let-through voltage of the device for short-duration pulses, and helps to spread the energy to more effectively utilize the transient voltage suppressor. The transient voltage suppressor limits the let-through voltage to a clamping level and provides indication to the crowbar circuit when it is no longer able to do so. Once the clamping level is no longer able to be maintained, the crowbar circuit draws enough current to trip an upstream protective device, such as a breaker or fuse.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: February 1, 2022
    Assignee: Faraday Defense Corporation
    Inventor: Arthur Thomas Bradley
  • Patent number: 11211870
    Abstract: Apparatus and methods for sequencing outputs in a multi-output power converter system are disclosed herein. During start-up multiple CC/CV outputs may be sequenced so that energy is first provided to a highest voltage secondary output and subsequently provided to a lowest voltage secondary output. Additionally, control may be exerted so as to concurrently and monotonically increase voltages during at least part of the start-up transient; and concurrent control may be further implemented using control circuitry and a variable reference generator. In some embodiments a variable reference may be generated from a capacitor voltage.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: December 28, 2021
    Inventors: Karl Moore, Matthew David Waterson, Antonius Jacobus Johannes Werner
  • Patent number: 11209846
    Abstract: In one embodiment, a semiconductor device includes a reference voltage supply circuit configured to supply a first reference voltage and a second reference voltage. The device further includes a power source voltage supply circuit including a first power source voltage generator supplied with the first reference voltage and configured to generate a first power source voltage, and a second power source voltage generator supplied with the second reference voltage and configured to generate a second power source voltage, the power source voltage supply circuit being configured to supply the first power source voltage and the second power source voltage to a power source voltage line. The device further includes a voltage control circuit connected to the power source voltage line, and configured to control a value of the first reference voltage and a value the second reference voltage.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: December 28, 2021
    Inventors: Kazuhiko Satou, Tomonori Kurosawa, Dai Nakamura
  • Patent number: 11204613
    Abstract: Embodiments described herein relate to an LDO circuit device and overcurrent protection circuit of an LDO circuit. An overcurrent protection circuit is added to an LDO circuit to process an output current signal of the LDO circuit. When the output current signal of the LDO circuit increases, a voltage of a gate drive signal of a power switch in the LDO circuit is increased through adjustment performed by the overcurrent protection circuit, thereby declining the current capability of the power switch in the LDO circuit and restricting an output current thereof from continuing to increase. After feedback regulation, the output current of the LDO finally reaches to a stable value.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: December 21, 2021
    Assignee: Shanghai Huali Microelectronics Corporation
    Inventors: Ning Zhang, Jingping Gu
  • Patent number: 11201559
    Abstract: The power conversion device includes multiple converter cells. Each converter cell includes a pair of primary-side terminals and a pair of secondary-side terminals. The converter cell transmits power between the pair of primary-side terminals and the pair of secondary-side terminals. The primary-side terminals of the multiple converter cells are connected in series to a primary-side power supply system. The secondary-side terminals of the multiple converter cells are connected in series to a secondary-side power supply system. Among the multiple converter cells, the converter cell in which an absolute value of a ground voltage appearing in the pair of primary-side terminals is the highest is different from the converter cell in which an absolute value of a ground voltage appearing in the pair of secondary-side terminals is the highest.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: December 14, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Kimihisa Furukawa, Yuuichi Mabuchi, Yuki Kawaguchi, Akihiko Kanouda
  • Patent number: 11190177
    Abstract: Techniques are described for implementing diodes with low threshold voltages and high breakdown voltages. Some embodiments further implement diode devices with programmable threshold voltages. For example, embodiments can couples a native device with one or more low-threshold, diode-connected devices. The coupling is such that the low-threshold device provides a low threshold voltage while being protected from breakdown by the native device, effectively manifesting as a high breakdown voltage. Some implementations include selectable branches by which the native device is programmably coupled with any of multiple low-threshold, diode-connected devices.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: November 30, 2021
    Inventors: Mengwen Zhang, Hassan Elwan
  • Patent number: 11190104
    Abstract: A DC/DC converter includes a first capacitor and a second capacitor coupled to a first node, a first switch and a second switch coupled between the first node and a second node, a third switch and a fourth switch coupled between the first node and a third node, a first passive network coupled between a fourth node and a fifth node, the first passive network connecting the fourth node and the fifth node in series to a primary winding of a transformer, and a secondary side circuit coupled to a secondary winding of the transformer; a control method of the DC/DC converter includes: adjusting a phase shift angle between control signals of the first switch and the fourth switch to reduce a voltage difference between the first capacitor and the second capacitor.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: November 30, 2021
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Wenfei Hu, Cheng Lu
  • Patent number: 11165354
    Abstract: The instant disclosure concerns a power converter including a capacitor having first and second electrodes respectively coupled to first and second input terminals via a current-limiting element; at least one normally-on transistor; a circuit for powering a circuit for controlling the normally-on transistor; and a switch configurable to, in a first configuration, couple first and second input terminals of the power supply circuit, respectively to the first and second input terminals of the converter, upstream of the current-limiting element and, in a second configuration, connect the first and second input terminals of the power supply circuit respectively to the first and second electrodes of the capacitor, downstream of the current-limiting element.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: November 2, 2021
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventors: Pierre Perichon, Sébastien Carcouet
  • Patent number: 11165366
    Abstract: Disclosed is an apparatus including: a photovoltaic panel; a CPG controller configured to receive a limit output power value of a photovoltaic panel, a photovoltaic panel terminal voltage, and a photovoltaic panel output current and output a photovoltaic panel terminal voltage reference; a direct current (DC)-voltage controller configured to receive the photovoltaic panel terminal voltage reference and the photovoltaic panel terminal voltage and output a duty ratio to cause an error between these values to become zero; a pulse width modulation (PWM) control signal generator configured to receive the duty ratio and output a PWM signal to control a DC/DC converter connected to the photovoltaic panel; the DC/DC converter configured to receive the PWM signals and perform CPG control; and a DC/AC inverter connected to the DC/DC converter and configured to convert DC power into AC power and output the AC power to an electrical grid.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: November 2, 2021
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Jungwook Park, Hyoungkyu Yang
  • Patent number: 11129268
    Abstract: An ignition apparatus is provided which ignites a mixture of air and fuel gas by plasma to generate an initial flame. The apparatus includes: a spark plug that includes an inner conductor, a cylindrical outer conductor that holds the inner conductor thereinside, and a dielectric that is provided between the inner conductor and the outer conductor, and that generates plasma in a plasma formation space between the inner conductor and the outer conductor; an electromagnetic wave power supply that generates an electromagnetic wave to apply electromagnetic wave power to the spark plug; an evaluation section that evaluates a state of formation of the plasma; a determination section that determines a matching object of the electromagnetic wave based on an evaluation result by the evaluation section; and a coupled state control section that controls a matching condition of the electromagnetic wave so that the electromagnetic wave matches the matching object.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: September 21, 2021
    Inventors: Shota Kinoshita, Fumiaki Aoki, Daisuke Tanaka, Akimitsu Sugiura, Jan Husarik, Masashi Kando
  • Patent number: 11128107
    Abstract: An electrical protection component having a short-circuit device is disclosed. In an embodiment an electrical protection component includes a short-circuiting device including a surge arrester including electrodes and a thermal short-circuiting device including a clip, a first section of which is snapped onto the surge arrester and a second section of which comprises a short-circuiting link, wherein the short-circuiting link of the clip is spaced apart from at least one of the electrodes by a fusible element, wherein the short-circuiting link electrically conductively connects two of the electrodes to one another when the fusible element melts, and wherein the fusible element has a melting point of at least 300 degrees Celsius.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: September 21, 2021
    Assignee: EPCOS AG
    Inventors: Lau Kee Khon, Frank Werner