Patents Examined by William Hernandez
  • Patent number: 12040607
    Abstract: A voltage stabilizer is provided for stabilizing a gate-source voltage of a switching element, wherein a source of the switching element receives a first driving voltage. The voltage stabilizer includes a transistor and a first resistor. A base of the transistor receives a second driving voltage, a collector of the bipolar junction transistor is electrically connected to a gate of the switching element, a first terminal of the first resistor is electrically connected to the collector and the gate, a second terminal of the first resistor is electrically connected to the source of the switching element and receives the first driving voltage.
    Type: Grant
    Filed: June 22, 2023
    Date of Patent: July 16, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Kuan-Ting Lee, Chen-Chieh Kao, Yu-Liang Lin, Cheng-Chia Hsiao
  • Patent number: 12040764
    Abstract: A hybrid compensation system is electrically connected between a power grid and a load. The hybrid compensation system includes an active filter, a passive filter and a control unit. The active filter generates an output current. The active filter includes a switching circuit, a DC bus capacitor and a filtering inductor. The control unit includes a voltage controller, a first reactive current detector, a harmonic current compensator, a current loop controller and a modulator. The voltage controller generates a first current given signal according to a bus voltage of the DC bus capacitor and a reference voltage. The first reactive current detector generates a second current given signal. The harmonic current compensator generates a third current given signal. The current loop controller generates a control signal. The modulator generates a driving signal according to the control signal.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: July 16, 2024
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Jianfei Zheng, Lan Wei, Binbin Dong, Jianping Ying
  • Patent number: 12034437
    Abstract: A signal transmission device that transmits a driving signal for a power transistor from a primary circuit system to a secondary circuit system while isolating between the primary and secondary circuit systems includes: a first fault detection circuit configured to detect a fault in the primary circuit system; a second fault detection circuit configured to detect a fault in the secondary circuit system; a first signal transmission path configured to transmit the result of detection by the second fault detection circuit from the secondary circuit system to the primary circuit system while isolating between the primary and secondary circuit systems; and a self-test circuit configured to perform a self-test on each of the first fault detection circuit, the second fault detection circuit, and the first signal transmission path.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: July 9, 2024
    Assignee: Rohm Co., Ltd.
    Inventors: Takeshi Kikuchi, Masato Nishinouchi, Akio Sasabe, Daiki Yanagishima
  • Patent number: 12028029
    Abstract: A power generator includes a plurality of amplifier blocks and a combiner. Each of the amplifier blocks include one or more amplifiers, and the combiner combines modulated power signals output from the amplifier blocks to generate an RF power signal of a load. The amplifier blocks are controlled to outphase the modulated power signals based on a phase angle. Ones of the amplifier blocks may perform discrete modulation to generate a respective one of the modulated power signals. The discrete modulation includes selecting different combinations of the amplifiers in one or more of the amplifier blocks to change the RF power signal in discrete steps. In embodiments, the amplifiers may be radio frequency power amplifiers.
    Type: Grant
    Filed: April 13, 2023
    Date of Patent: July 2, 2024
    Assignee: Massachusetts Institute of Technology
    Inventors: Haoquan Zhang, Anas Al Bastami, David J. Perreault
  • Patent number: 12021494
    Abstract: An embodiment is a multiplexer including a first distributed amplifier with an impedance matched to 50?, the first distributed amplifier configured to receive a first signal and output a first amplified signal, a second distributed amplifier with an impedance matched to 50?, the second distributed amplifier configured to receive a second signal and output a second amplified signal, and a passive multiplexer configured to multiplex the first amplified signal and the second amplified signal, and output a multiplexed signal to a signal output terminal, the passive multiplexer including a first resistor having a first end to receive the first amplified signal, a second resistor having a first end to receive the second amplified signal, and a third resistor having a first end connected to second ends of the first and second resistors and a second end connected to the signal output terminal.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: June 25, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Teruo Jo, Munehiko Nagatani, Hideyuki Nosaka
  • Patent number: 12021391
    Abstract: A bidirectional wireless power transfer system for transferring power comprises a power stage electrically connected to a transceiver element for an electric field and/or a magnetic field, and for extracting power from a generated electric field and/or a generated magnetic field. The power stage is for inverting an inputted power signal and for rectifying a received power signal. The system further comprises a trigger circuit for synchronizing wireless power transfer; and a clock generator for generating a clock signal.
    Type: Grant
    Filed: August 31, 2022
    Date of Patent: June 25, 2024
    Assignee: Solace Power Inc.
    Inventor: Amir Tahavorgar
  • Patent number: 11996763
    Abstract: An integrated circuit configured to switch a transistor in a power supply circuit. The integrated circuit includes a first terminal to which a first resistor is coupled; a first detection circuit configured to detect whether a load of the power supply circuit is in an overload state; a second detection circuit configured to detect whether a current flowing through the transistor is overcurrent; an oscillator circuit configured to output an oscillator signal with a cycle corresponding to a first resistance value of the first resistor; and a driving signal output circuit configured to output a driving signal to turn on the transistor, based on the oscillator signal, and turn off the transistor, based on a feedback voltage corresponding to the output voltage. The driving signal output circuit further outputs the driving signal to turn off the transistor, in response to the current flowing through the transistor reaching overcurrent.
    Type: Grant
    Filed: October 24, 2022
    Date of Patent: May 28, 2024
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Hiroshi Maruyama
  • Patent number: 11996769
    Abstract: A noise filter includes: a voltage detector which detects a common mode voltage generated by a power converter; a voltage division circuit which outputs a division voltage obtained by dividing the common mode voltage detected by the voltage detector; a plurality of common mode transformers which superimpose injection voltages each having a polarity opposite to a polarity of the common mode voltage onto an output from or an input to the power converter; and an injection waveform generator which generates, on the basis of the division voltage, output voltages to be outputted to primary sides of the plurality of common mode transformers. The injection waveform generator generates the output voltages such that a difference between the common mode voltage and a total injection voltage obtained by summing the injection voltages to be superimposed by the plurality of common mode transformers is equal to or smaller than an allowable value.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: May 28, 2024
    Assignees: MITSUBISHI ELECTRIC CORPORATION, MITSUBISHI ELECTRIC ENGINEERING COMPANY, LIMITED
    Inventors: Yuki Fujita, Yasuaki Furusho, Hiroyuki Ichinose
  • Patent number: 11990838
    Abstract: A driver circuit may include a first inductor with a first terminal coupled to a first voltage terminal and a first switch with a first and a second terminal. The first terminal of the first switch is coupled to a second terminal of the first inductor via a first node and the second terminal of the first switch is coupled to a second voltage terminal. Moreover, the driver circuit may include a diode with a first terminal coupled to the first node, an output terminal, and a first capacitor with a first electrode coupled to a second terminal of the diode and a second electrode coupled to the output terminal.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: May 21, 2024
    Assignee: ams-OSRAM International GmbH
    Inventors: Ann Russell, Joseph Gasiewicz, Syedhossein Mousavian, Somayeh Abnavi, Hubert Halbritter, Steffen Strauss
  • Patent number: 11984892
    Abstract: A comparator circuit according to the present embodiment: including a comparator element configured to output a matching signal indicating whether or not a value of a first input signal matches a value of a second input signal; a flip-flop circuit including a data input terminal to which a constant potential is supplied and a clock input terminal and configured to hold a value of the data input terminal based on a self-clock signal input to the clock input terminal; and a clock generation circuit configured to generate the self-clock signal based on the matching signal.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: May 14, 2024
    Assignee: JVCKENWOOD CORPORATION
    Inventor: Marta Dinata Anwar
  • Patent number: 11984906
    Abstract: A batteryless wireless sensor system includes a data acquisition system, a radio frequency (RF) transceiver, and a batteryless wireless sensor device. The RF transceiver is in communication with the data acquisition system, transmits a RF signal, and receives sensor data and provide the sensor data to the data acquisition system. The batteryless wireless sensor device includes a RF transmitter, an analog to digital converter (ADC), and a sensor. The batteryless wireless sensor harvests energy from the RF signal and generates a DC signal based on the energy harvested from the RF signal, powers up and operates the ADC and the sensor based on the DC signal, and generates sensor data. The batteryless wireless sensor then transmits the sensor data via the RF transmitter to the RF transceiver. In certain examples, the ADC is implemented as a current mode ADC.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: May 14, 2024
    Assignee: SIGMASENSE, LLC.
    Inventor: Phuong Huynh
  • Patent number: 11983030
    Abstract: A clock transmission circuit includes a clock driver circuit suitable for transmitting a clock and adjusting a driving force thereof in response to a boosting signal; a low-pass filter circuit suitable for receiving the clock and outputting an initialization signal; and a boosting signal generating circuit suitable for generating the boosting signal that is activated in response to the initialization signal and deactivated in response to the clock.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: May 14, 2024
    Assignee: SK hynix Inc.
    Inventors: Heon Ki Kim, Dae Ho Yang
  • Patent number: 11984878
    Abstract: A switch including a transistor to be protected, and a Miller effect protection unit including a protection transistor, the drain of the protection transistor being connected to the gate of the transistor to be protected, the source of the protection transistor being connected to the source of the transistor to be protected, a linking circuit, the linking circuit being a high-pass filter arranged between the gate of the protection transistor and the drain of the transistor to be protected, and a control circuit interposed between the gate of the protection transistor and the source of the transistor to be protected.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: May 14, 2024
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventor: Johan Delaine
  • Patent number: 11979082
    Abstract: One example includes a power supply system. The system includes a power switch configured to activate via a control voltage responsive to a first state of an activation signal to conduct current from a power rail to a switching terminal. The system further includes a power switch deactivation driver configured to control an amplitude of the control voltage responsive to a second state of the activation signal based on a voltage difference between the power rail and the switching terminal to provide for a variable rate of deactivation of the power switch.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: May 7, 2024
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Connie Jiang
  • Patent number: 11979083
    Abstract: A driver circuit includes a drive circuit, a monitoring circuit, and a control circuit. The drive circuit includes a first current source and drives a switching element when the first current source is connected to a control terminal of the switching element. The monitoring circuit monitors a period of time from a start to an end of a change in a voltage drop across the switching element. The control circuit controls a current value of the first current source based on the monitored period of time such that a slew rate of the voltage drop across the switching element approaches a target value.
    Type: Grant
    Filed: September 6, 2022
    Date of Patent: May 7, 2024
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventor: Yuji Yamanaka
  • Patent number: 11973512
    Abstract: A batteryless wireless sensor system includes a data acquisition system, a radio frequency (RF) transceiver, and a batteryless wireless sensor device. The RF transceiver is in communication with the data acquisition system, transmits a RF signal, and receives sensor data and provide the sensor data to the data acquisition system. The batteryless wireless sensor device includes a RF transmitter, an analog to digital converter (ADC), and a sensor. The batteryless wireless sensor harvests energy from the RF signal and generates a DC signal based on the energy harvested from the RF signal, powers up and operates the ADC and the sensor based on the DC signal, and generates sensor data. The batteryless wireless sensor then transmits the sensor data via the RF transmitter to the RF transceiver. In certain examples, the ADC is implemented as a current mode ADC.
    Type: Grant
    Filed: March 2, 2023
    Date of Patent: April 30, 2024
    Assignee: SIGMASENSE, LLC.
    Inventor: Phuong Huynh
  • Patent number: 11973507
    Abstract: A comparator circuit includes an input stage with a set of differential current paths and a pair of differential input transistors connected to a pair of input terminals. An output stage includes an output current path between a first and a second supply terminal, an output transistor connected in the output current path and having a control terminal coupled to the set of differential current paths, and a comparator output connected to the output current path. An auxiliary stage includes an auxiliary current path between the supply terminals, an auxiliary current source, a first auxiliary transistor connected in the auxiliary current path and having a control terminal connected to the control terminal of the output transistor, and a voltage follower with a second auxiliary transistor and a third auxiliary transistor.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: April 30, 2024
    Assignee: AMS INTERNATIONAL AG
    Inventor: Vincenzo Leonardo
  • Patent number: 11967894
    Abstract: A power converter includes: plural inverter units connected in parallel to a DC power supply, including a storage battery, on a DC side and a DC fuse in each of current paths between the DC power supply and the inverter units, the DC fuse configured to, when a short-circuit failure occurs in any of the inverter units, be blown in the current path between the DC power supply and the inverter unit having the short-circuit failure. The number of the inverter units is a number with which a condition that, when the DC fuse between the DC power supply and the inverter unit having the short-circuit failure is blown, none of a plurality of the DC fuses between the DC power supply and a plurality of other inverter units that do not have the short-circuit failure are blown is satisfied.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: April 23, 2024
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Yoshinori Tsuruma
  • Patent number: 11968004
    Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. The devices in the wireless power system may communicate using in-band communication. The wireless power transmitting device may transmit data to the wireless power receiving device using frequency-shift keying (FSK) modulation. The wireless power receiving device may transmit data to the wireless power transmitting device using amplitude-shift keying (ASK) modulation. While transmitting data to the wireless power receiving device using FSK modulation, the wireless power transmitting device may monitor for ASK modulation from the wireless power receiving device. In response to detecting the ASK modulation from the wireless power receiving device, the wireless power transmitting device may abort the FSK data transmission and process the detected ASK modulation to receive data from the wireless power receiving device.
    Type: Grant
    Filed: June 26, 2023
    Date of Patent: April 23, 2024
    Assignee: Apple Inc.
    Inventors: Jeffrey D. Louis, Zaid A. AbuKhalaf
  • Patent number: 11962323
    Abstract: A batteryless wireless sensor system includes a data acquisition system, a radio frequency (RF) transceiver, and a batteryless wireless sensor device. The RF transceiver is in communication with the data acquisition system, transmits a RF signal, and receives sensor data and provide the sensor data to the data acquisition system. The batteryless wireless sensor device includes a RF transmitter, an analog to digital converter (ADC), and a sensor. The batteryless wireless sensor harvests energy from the RF signal and generates a DC signal based on the energy harvested from the RF signal, powers up and operates the ADC and the sensor based on the DC signal, and generates sensor data. The batteryless wireless sensor then transmits the sensor data via the RF transmitter to the RF transceiver. In certain examples, the ADC is implemented as a current mode ADC.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: April 16, 2024
    Assignee: SIGMASENSE, LLC.
    Inventor: Phuong Huynh