Patents Examined by Kenneth B. Wells
  • Patent number: 11079783
    Abstract: A power supply circuit according to the present invention includes, for example, an output circuit arranged to generate a stabilized voltage from an input voltage using an output transistor, a filter circuit arranged to smooth the stabilized voltage using a resistor and a capacitor so as to generate an output voltage, and a charging circuit arranged to supply charging current to the capacitor without the charging current being passed through the resistor.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: August 3, 2021
    Assignee: Rohm Co., Ltd.
    Inventor: Hiroki Inoue
  • Patent number: 11082044
    Abstract: An integrated circuit is provided. The integrated circuit includes a power gating circuit configured to receive a power supply voltage from a first power line and to output a first driving voltage to a first virtual power line and a logic circuit electrically connected to the first virtual power line and configured to receive power from the power gating circuit. The power gating circuit includes a first p-type transistor and a first n-type transistor connected in parallel between the first power line and the first virtual power line.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: August 3, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chanhee Park, Jongwoo Kim, Minsu Kim
  • Patent number: 11079730
    Abstract: The present disclosure provides a control device having versatility and extensibility of a load driving circuit. A control device includes a processor and an IC, in which the IC includes: a communication circuit that transmits a control signal from the processor; a first drive circuit that drives a first load; a second drive circuit that drives a second load and is provided outside the IC separately from the first drive circuit; and a third drive circuit that controls the second drive circuit, the processor transmits channel information corresponding to the number of switches of the second drive circuit to the IC, and the communication circuit changes the number of channels of the third drive circuit on the basis of the channel information.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: August 3, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Katsuya Oyama, Mitsuhiko Watanabe, Takeshi Konno, Yasushi Sugiyama, Chihiro Sato
  • Patent number: 11082038
    Abstract: In one aspect, a circuit includes a gate driver having a first input connected to a first node and a second input connected to a second node; an epi diode connected to the first node; a switch connected to the first node; a capacitor having a top plate connected to the switch and a bottom plate connected to the second node; and a first clamp connected the first node and to the second node. The switch being open isolates the first node from negative transient effects from the top plate of the capacitor.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: August 3, 2021
    Assignee: Allegro MicroSystems, LLC
    Inventors: Thomas Ross, James McIntosh, Gianluca Allegrini
  • Patent number: 11082052
    Abstract: Frequency lock loop (FLL) circuits, low voltage dropout regulator circuits, and related methods are disclosed. An example gate driver integrated circuit includes a first die including a FLL circuit to generate a first clock signal having a first phase and a first frequency, a second clock signal having the first frequency and a second phase different from the first phase, and control a plurality of switching networks to increase the first frequency to a second frequency, and generate a feedback voltage based on the second frequency, and a second die coupled to the first die, the second die including a low dropout (LDO) circuit and a driver, the driver configured to control a transistor based on the first frequency, the second die configured to be coupled to the transistor, the LDO circuit to generate a pass-gate voltage based on an output current of the LDO circuit satisfying a current threshold.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: August 3, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Byungchul Jang, Adam Lee Shook, Pankaj Pandey
  • Patent number: 11075625
    Abstract: A circuit includes a driver circuit configured to generate a driving signal having a first edge, an output circuit coupled to the driver circuit via a connection to receive the driving signal on the connection, and a compensation circuit coupled to the connection. The output circuit is configured to generate an output signal in response to the driving signal. A second edge of the output signal has a slew rate corresponding to a changing rate of a voltage of the driving signal on the first edge. The compensation circuit is configured to be enabled at a beginning of the first edge to pull the voltage of the driving signal on the first edge toward a threshold voltage. The compensation circuit is further configured to be disabled in response to and after the voltage of the driving signal on the first edge reaching the threshold voltage.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: July 27, 2021
    Assignees: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., TSMC CHINA COMPANY, LIMITED
    Inventors: Miranda Ma, Zhen Tang, Lei Pan
  • Patent number: 11075627
    Abstract: Methods and circuitry for driving a device are disclosed. An example of the circuitry includes a voltage sensing circuit coupled to an input of a transistor, the voltage sensing circuit having a first output at a node, the voltage sensing circuit comprising a capacitive voltage divider, and a current sensing circuit coupled to the input of the transistor and to the voltage sensing circuit, the current sensing circuit having a second output, the current sensing circuit comprising a resistive divider coupled to the input of the transistor.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: July 27, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Olivier Trescases, Johan Tjeerd Strydom, Rajarshi Mukhopadhyay
  • Patent number: 11075622
    Abstract: In one aspect, a gate driver circuit includes a gate driver having a first input connected to a first node and a second input connected to a second node. The gate driver circuit also includes a current source circuit that includes a first transistor and a capacitor having a top plate connected to the source of the first transistor and a bottom plate connected to ground. The gate driver circuit further includes a switch that includes a second transistor. A gate of the second transistor is connected to a drain of the first transistor and a source of the second transistor is connected to the first node.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: July 27, 2021
    Assignee: Allegro MicroSystems, LLC
    Inventors: Thomas Ross, Michael Munroe, James McIntosh
  • Patent number: 11075634
    Abstract: A switching operation sensing apparatus includes an input operation unit, an oscillation circuit, a frequency digital converter, and a touch detection circuit. The input operation unit includes a first switching member integrally formed with a housing. The oscillation circuit is configured to generate an oscillation signal having a resonant frequency, varying based on a capacitive change or an inductive change, depending on a touch input member in contact with the first switching member during an input operation. The frequency digital converter is configured to convert the oscillation signal into a count value. The touch detection circuit is configured to detect capacitive sensing and inductive sensing based on a slope change of the count value received from the frequency digital converter, and output corresponding touch detection signals of different levels based on the detection.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: July 27, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Je Hyuk Ryu, Joo Yul Ko, Yong Woon Ji, Jong Woo Lee, Byung Joo Hong
  • Patent number: 11063584
    Abstract: A switching circuit comprising a transistor and a drive component both for controlling the transistor and also for limiting the power supply current supplied to a load, the drive component being arranged both to receive a control voltage and also: when the control voltage is a disconnection signal, to generate a drive voltage that causes the transistor to occupy a non-conductive state; when the control voltage is a connection signal and the power supply current cannot reach a predefined current threshold, to generate a drive voltage that causes the transistor to occupy saturated conditions; and when the control voltage is a connection signal and the power supply current can reach a predefined current threshold, to generate a drive voltage that causes the transistor to occupy linear conditions, such that the power supply current is regulated so that it does not exceed the predefined current threshold.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: July 13, 2021
    Assignee: SAFRAN ELECTRONICS & DEFENSE
    Inventors: Olivier Meline, Fran├žois Guillot
  • Patent number: 11057032
    Abstract: A control circuit includes: a transistor controller that controls a voltage at a gate terminal of a field effect transistor in accordance with a difference in voltage between a source terminal and a drain terminal of the field effect transistor connected so that a body diode is in a forward direction; and a current controller that reduces an operating current for operating the transistor controller when a load connected via the source terminal of the field effect transistor is light, and increases the operating current when the load is heavy.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 6, 2021
    Assignee: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventor: Kazuhiko Saito
  • Patent number: 11043943
    Abstract: A semiconductor module comprises reverse conducting IGBT connected in parallel with a wide bandgap MOSFET, wherein each of the reverse conducting IGBT and the wide bandgap MOSFET comprises an internal anti-parallel diode. A method for operating a semiconductor module with the method including the steps of: determining a reverse conduction start time, in which the semiconductor module starts to conduct a current in a reverse direction, which reverse direction is a conducting direction of the internal anti-parallel diodes; applying a positive gate signal to the wide bandgap MOSFET after the reverse conduction start time; determining a reverse conduction end time based on the reverse conduction start time, in which the semiconductor module ends to conduct a current in the reverse direction; and applying a reduced gate signal to the wide bandgap MOSFET a blanking time interval before the reverse conduction end time, the reduced gate signal being adapted for switching the wide bandgap MOSFET into a blocking state.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: June 22, 2021
    Assignee: ABB Power Grids Switzerland AG
    Inventors: Umamaheswara Vemulapati, Ulrich Schlapbach, Munaf Rahimo
  • Patent number: 11038368
    Abstract: A method of controlling power supply of a caravan including a photovoltaic plate includes: receiving a first power parameter of an input interface element; determining whether there is a mains supply to be input into the input interface element according to the first power parameter; turning on a first switch to make the input interface element be electrically connected to the output interface element if the mains supply is input into the input interface element; receiving a power parameter of a battery pack if the mains supply is not input into the input interface element; determining whether a remaining power of the battery pack exceeds a power threshold according to the power parameter of the battery pack; and making the battery pack be electrically connected to an output interface element if the remaining power of the battery pack exceeds the power threshold.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: June 15, 2021
    Assignee: SHENZHEN HELLO TECH ENERGY CO., LTD.
    Inventors: Zhongwei Sun, Shiji Wu, Zhiyuan Zhong, Xuhe Liu
  • Patent number: 11038373
    Abstract: A power receiver apparatus receives a code-modulated wave from a power transmitter apparatus via a transmission path, the code-modulated wave including first power modulated by code modulation using a modulation code based on a code sequence. The power receiver apparatus is provided with a contactless connector and a code demodulator. The contactless connector is coupled to the transmission path without electrical contact with the transmission path, and receives the code-modulated wave from the power transmitter apparatus via the transmission path. The code demodulator demodulates the received code-modulated wave to generate second power by code demodulation using a demodulation code based on a code sequence identical to the code sequence of the modulation code used for the code modulation.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: June 15, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Atsushi Yamamoto, Motohiko Fujimura, Taiki Nishimoto, Masahiro Yamaoka
  • Patent number: 11038554
    Abstract: A microcontroller includes a plurality of electronic functional circuits comprising a read-only memory (ROM) and a central processing unit (CPU) and an interconnection circuit. The CPU and the interconnection circuit are disposed in a mobile electronic device and the ROM is disposed outside the mobile electronic device. The interconnection circuit is configured to communicate with the plurality of electronic functional circuits. The communication with the ROM is wireless communication.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: June 15, 2021
    Assignee: STMICROELECTRONICS (GRENOBLE 2) SAS
    Inventor: Giovanni Scozzola
  • Patent number: 11031935
    Abstract: A switching circuit includes; a switching element; a driver; a diode connected between a source terminal and a gate terminal of the switching element; a resistor connected between the driver and the gate terminal of the switching element; a series circuit connected in parallel with the resistor, and including a capacitor and a resistor; and a diode including an anode on a side of the gate terminal of the switching element and a cathode on a side of a second output terminal of the driver. The diode is connected in parallel with at least the capacitor out of the capacitor and the resistor connected in series.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: June 8, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Daijiro Arisawa, Takeshi Azuma, Daisuke Yamamoto, Yoshihisa Minami, Manabu Yanagihara
  • Patent number: 11031925
    Abstract: Frequency multiplying circuit for clock signal is provided, including N branches and an N-times frequency multiplying circuit, wherein each branch includes a buffer and a frequency doubling circuit, and the frequency doubling circuit doubles a frequency of a reference clock signal to obtain a frequency doubled reference clock signal, wherein the N-times frequency multiplying circuit includes: N second calibration delay circuits coupled to the N frequency doubling circuits respectively, wherein each second calibration delay circuit performs clock delay on the frequency doubled reference clock signal to obtain a clock delayed frequency doubled reference clock signal; and an N-path phase combination circuit coupled to the N second calibration delay circuits, and configured to perform phase combination on the N clock delayed frequency doubled reference clock signals to obtain a 2N-times frequency multiplied reference clock signal.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: June 8, 2021
    Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
    Inventors: Guobi Zhao, Jiewei Lai
  • Patent number: 11025231
    Abstract: In one embodiment, a tuning network includes: a controllable capacitance; a first switch coupled between the controllable capacitance and a reference voltage node; a second switch coupled between the controllable capacitance and a third switch; the third switch coupled between the second switch and a second voltage node; a fourth switch coupled between the second voltage node and a first inductor; the first inductor having a first terminal coupled to the fourth switch and a second terminal coupled to at least the second switch; and a second inductor having a first terminal coupled to the second terminal of the first inductor and a second terminal coupled to the controllable capacitance.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: June 1, 2021
    Assignee: Silicon Laboratories Inc.
    Inventors: Ruifeng Sun, Abdulkerim Coban
  • Patent number: 11025261
    Abstract: A clock distribution circuit configured to output a clock signal includes a first circuit configured to use a reference clock signal to provide first and second reference signals, wherein the second reference signal indicates whether the first reference signal is locked with the reference clock signal; a second circuit configured to use the reference clock signal to provide an output signal and an indication signal indicative whether the output signal is locked with the reference clock signal; and a monitor circuit, coupled to the first and second circuits, and configured to use at least one of the first reference signal, the second reference signal, the output signal, and the indication signal to determine whether the second circuit is functioning correctly.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: June 1, 2021
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Sandeep Kumar Goel, Ji-Jan Chen, Stanley John, Yun-Han Lee, Yen-Hao Huang
  • Patent number: 11025246
    Abstract: A switch control circuit and a switch control system includes a plurality of parallel-connected signal processing units. A first voltage signal and second voltage signal control turning-on and turning-off of the first controllable switch, and converting the first voltage signal into a third voltage signal; and the third voltage signal being connected with the first port of the controller; and the controller, configured to send a switch control instruction to a to-be-controlled terminal based on the third voltage signal. This circuit converts a electrical signal of a high voltage in strong electricity into a stable electrical signal of a low voltage in weak electricity, implements multiplex switch control in conjunction with the controller, and only processes voltage signals in the whole circuit, thereby avoiding processing signals of a plurality of types, and guaranteeing the reliability of the multiplex switch control.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: June 1, 2021
    Assignee: Wenzhou MTLC Electric Appliances Co., Ltd.
    Inventors: Lidong Ni, Wei Gao