Output Level Responsive Patents (Class 323/234)
  • Patent number: 10892925
    Abstract: Techniques are provided for an integrated circuit, current loop interface that can receive and extract a high-frequency digital communication signal from a low-frequency analog current signal using a complex impedance circuit. The complex impedance circuit can allow for low input impedance at the lower frequencies of the analog current signal and high input impedance at the higher frequencies of the digital communication signal.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: January 12, 2021
    Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
    Inventors: Michal Brychta, Alan Patrick Cahill, Sharad Vijaykumar
  • Patent number: 10826519
    Abstract: The present disclosure provides alternative solutions to the problem of providing a stable voltage reference to high speed ADCs that possess high sampling rates. In one example the high speed amplifier is replaced by a smaller, slower, lower power amplifier in combination with a relatively large capacitor connected to the same node as the amplifier output and the ADC reference input. The capacitor is charged substantially to the external reference voltage and hence keeps the reference input of the ADC almost at the external reference voltage between conversions, such that when conversion is about to occur and the external reference is switched in then very little charge is required from the external reference, and hence the reference signal quickly settles.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 3, 2020
    Assignee: Analog Devices International Unlimited Company
    Inventors: Christopher Peter Hurrell, Rares Andrei Bodnar
  • Patent number: 10700050
    Abstract: A method of manufacturing a power semiconductor module according to the present invention includes the steps of: (a) forming a 6-in-1 chip 1 that is a power semiconductor chip incorporating a plurality of lateral power transistors; (b) forming control chips configured to control the 6-in-1 chip 1 according to a process rule different from a process rule of the 6-in-1 chip 1; and (c) forming one power semiconductor module with the 6-in-1 chip 1 and the control chips.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 30, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hiroyuki Nakamura
  • Patent number: 10666042
    Abstract: Embodiments include a technique for eliminating secondary fuses in high power solid state power controllers, the technique includes controlling gate power provided to a field effect transistor array, and detecting a failure mode. The technique also includes disabling the gate power based at least in part on detecting the failure mode, and restoring the gate power responsive to resolving the failure mode.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: May 26, 2020
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventor: John A. Dickey
  • Patent number: 10576733
    Abstract: A tuneable flat panel UV exposure system for screen printing is provided. The panel includes a plurality of UV LED chips where each chip is connected to multiple, independently controllable power sources and pulse width modulation circuits. The power sources allow an operator to control a plurality of different wavelength outputs independently for each UV LED in the panel.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: March 3, 2020
    Assignee: M&R Printing Equipment, Inc.
    Inventor: Keith R. Falk
  • Patent number: 10545519
    Abstract: A voltage regulator includes a programming interface via which programming instructions may be applied to a processor of the voltage regulator. The voltage regulator operates the processor according to the programming instructions to select one of multiple active internally-generated analog voltage levels to determine an output voltage level of the voltage regulator.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: January 28, 2020
    Assignee: Tamiras Per Pte. Ltd., LLC
    Inventor: David G. Wright
  • Patent number: 10505161
    Abstract: Disclosed herein is a battery module including a battery cell assembly constituted by at least two battery cells, a front plate and a rear plate fixed to the battery cell assembly such that the front plate and the rear plate cover outermost ones of the battery cells, an electrically insulative cover member mounted at an upper end of the battery cell assembly, the electrically insulative cover member being provided with through holes, through which electrode terminals of the battery cells extend, a PCB mounted on a bottom of the cover member, a plurality of conductive connection parts arranged on the cover member, the conductive connection parts being connected to the electrode terminals of the battery cells and the PCB, and a lower molding part located on the PCB at the bottom of the cover member, the lower molding part covering the connection between the PCB and the conductive connection parts.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: December 10, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Tae Hyuck Kim, Tae Hwan Roh, Yoonhee Lee, Jin Kyu Lee, Junhee Jung
  • Patent number: 10498130
    Abstract: Method(s) for limiting current in an electrical circuit having transmission wires for power transmission include determining whether an unexpected operating condition exists along the transmission wires and limiting the current to prevent (damage caused by) the unexpected operating condition. The method may further include disabling the electrical circuit if the unexpected operating condition persists. Additionally, a system includes a power source, a solid state power controller (SSPC) configured to operate in a first conducting state and a second non-conducing state, and a controller.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: December 3, 2019
    Assignee: GE Aviation Systems Limited
    Inventors: Peter James Handy, Julian Peter Mayes, David Alan Elliott
  • Patent number: 10488902
    Abstract: A device and method for controlling a voltage applied to processor cores of a processor are disclosed. The method includes processing a plurality of tasks on the processor with a plurality of processor cores and applying a rail voltage to the plurality of processor cores. The number of the plurality of processor cores that are active is adjusted, and the rail voltage that is applied to the plurality of processor cores is adjusted based upon the number of the plurality of processor cores that are active.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: November 26, 2019
    Assignee: QUALCOMM Innovation Center, Inc.
    Inventors: Sajjad Pagarkar, Karthik Ranganathan Vishwanathan
  • Patent number: 10431940
    Abstract: A power receptacle includes a socket, where a direct current (DC) power signal is provided at the socket to provide a DC power to a device that gets plugged into the socket. The power receptacle further includes a switch that is electrically coupled to the socket. The power receptacle also includes a controller that controls the switch to control whether the DC power signal is available at the socket. The controller controls the switch based on a power control command that is wirelessly received by the power receptacle.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: October 1, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventor: Kenneth Dale Walma, Jr.
  • Patent number: 10416643
    Abstract: An electrical management system for managing a smart home. A plurality of end units such as electrical outlets and electrical switches sample the electricity going through the end-unit at least 1,000 times per second. The information is communicated to a server, which analyzes the data across many installations and can alert the user for any abnormal electrical situation in the home.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: September 17, 2019
    Assignee: YOTTA GREEN LTD
    Inventors: Zvika Weber, Moshe Gad Vekslar
  • Patent number: 10416204
    Abstract: A device for measuring voltage across a remote load includes a power supply configured to output a first output voltage to the remote load. A switch is selectively movable from a closed position to an open position. A measuring circuit measures a load voltage across the load when the switch is in the open position and determines a voltage difference between the first output voltage and the load voltage. The measuring circuit adjusts the first output voltage to a second output voltage to compensate for the voltage difference. A second A/D converter can also be coupled to the power supply. The second A/D converter measures a voltage across a resistor such that a change in the voltage indicates a change in the load voltage. The power supply is then adjusted to output a second output voltage to compensate for any change in load voltage.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: September 17, 2019
    Assignee: Hanchett Entry Systems, Inc.
    Inventor: Robert W. Lewis
  • Patent number: 10401431
    Abstract: A system for identifying which electrical outlets are electrically connected to a circuit breaker, including an electrical outlet faceplate cover having a plurality of electrical outlet openings and a fastener located between the plurality of electrical outlet openings such that the electrical outlet faceplate cover is located over an electrical outlet, a circuit breaker panel having at least one circuit breaker located on the circuit breaker panel, and a near field communications tag located on a back side of the electrical outlet faceplate cover, wherein the near field communications tag is operatively connected to the fastener such that the near field communications tag contains information related to which of the at least one circuit breakers is electrically connected to the electrical outlet.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: September 3, 2019
    Inventors: Arthur T. Schmidt, III, Hayden Schmidt
  • Patent number: 10389251
    Abstract: The described embodiments include an apparatus that controls voltages for an integrated circuit chip having a set of circuits. The apparatus includes a switching voltage regulator separate from the integrated circuit chip and two or more low dropout (LDO) regulators fabricated on the integrated circuit chip. The switching voltage regulator provides an output voltage that is received as an input voltage by each of the two or more LDO regulators, and each of the two or more LDO regulators provides a local output voltage, each local output voltage received as a local input voltage by a different subset of the circuits in the set of circuits. During operation, a controller sets an operating point for each of the subsets of circuits based on a combined power efficiency for the subsets of the circuits and the LDO regulators, each operating point including a corresponding frequency and voltage.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: August 20, 2019
    Assignee: ADVANCED MICRO DEVICES, INC.
    Inventors: Wei Huang, Yasuko Eckert, Xudong An, Muhammad Shoaib Bin Altaf, Jieming Yin
  • Patent number: 10325192
    Abstract: A system for identifying which electrical outlets are electrically connected to a circuit breaker, including an electrical outlet faceplate cover having a plurality of electrical outlet openings and a fastener located between the plurality of electrical outlet openings such that the electrical outlet faceplate cover is located over an electrical outlet, a circuit breaker panel having at least one circuit breaker located on the circuit breaker panel, and a near field communications tag located on a back side of the electrical outlet faceplate cover, wherein the near field communications tag is operatively connected to the fastener such that the near field communications tag contains information related to which of the at least one circuit breakers is electrically connected to the electrical outlet.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: June 18, 2019
    Inventor: Hayden T. Schmidt
  • Patent number: 10311397
    Abstract: This disclosure describes techniques for automatically identifying endpoint devices based on differing power loads drawn by the endpoint devices. In some instances, the endpoint devices are distributed about one or more facilities, such as item handling facilities, and may comprise an array of sensors for tracking inventory items within, into, and out of these facilities. These sensors may include cameras, weight sensors, RFID readers, microphones, and the like. Further, multiple ones of these sensors may couple to a power injector (e.g., a power-over-Ethernet (POE) injector) that provides both data and power to each sensor over a cable. The power injector may in turn couple to a network switch and/or a controller, which may identify the endpoint devices based on their modulated power loads.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: June 4, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Sajesh Kumar Saran, Nicholas Michael Vallidis, Tyler Ogren Vrooman, Jared Justin Huntington, James Merton Tidman
  • Patent number: 10270348
    Abstract: A synchronous switching regulator circuit for supply regulation of a switching circuit includes a pass transistor to couple the switching circuit to a supply voltage. The synchronous switching regulator circuit further includes a switch that is operable to synchronously turn off a flow of a supply current through the pass transistor. The switching circuit can be controlled by a switching signal, and the switch can operate in synchronization with the switching circuit.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 23, 2019
    Assignee: Avago Technologies International Sales PTE. Limited
    Inventors: Choong Yul Cha, Dandan Li, Hung-Ming Chien, Long Bu, Stephen C. Au
  • Patent number: 10250142
    Abstract: The present disclosure provides a system and method for managing a four-switch BUCKBOOST converter with a combination of a Constant Off-time (COT) control and a Peak Current Mode (PCM) control. With the COT control, the four-switch BUCKBOOST converter can automatically and smoothly transition between a BUCK mode, a BUCKBOOST mode, and a BOOST mode when input voltage varies. In some implementations, the four-switch BUCKBOOST converter only requires a simple, low-power-consumption and robust system control loop compensation with the PCM control for inductor current, and, thus, eliminates the need for oscillator and slope compensation circuit. The PCM control is used to determine turn-off-timing of switches of the four-switch BUCKBOOST converter. The system control loop compensation can provide cycle-by-cycle current limit function to protect the converter and load from over-current damages.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: April 2, 2019
    Assignee: M3 TECHNOLOGY INC.
    Inventors: Bo Yang, Xiaoyu Xi, David Da Meng
  • Patent number: 10250295
    Abstract: The invention provides for a network power-supply voltage adaptor arranged to receive an input voltage (V in) from a network trunk cable and to present an internal voltage derived from the said input voltage (V in), the adaptor being arranged, when at least one of the input voltage (V in) or the said internal voltage is above a reference voltage (Ref V), to regulate the received input voltage (V in) to provide an adaptor output dc power supply voltage (V out) at a substantially constant dc power supply level less than that of the input voltage (V in), and independent of changes in the input voltage level (V in), and the adaptor further comprising at least one communication feed-through loop (55, 56, 66, 68) for the passage of substantially unaltered communications signals through the adaptor.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: April 2, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: David Gareth Williams, Les John Price
  • Patent number: 10191121
    Abstract: The present disclosure provides a system and method enabling a self-burn-in test for a power supply device (PSD) of a server system using a multi-phase scheme. The PSD comprises a power-width modulation (PWM) controller, and a plurality of power stages. Each of the plurality of power stages comprises a driver, a high-side MOSFET, and a low-side MOSFET. In one aspect of the present disclosure, upon receiving a test mode command from a controller of the server system, the PWM controller can send a PWM signal to switch a specific power stage to the On state, and send at least another PWM signal that switches other power stage(s) of the plurality of power stages to the Tri-state. During a subsequent self-burn-in test of the specific power stage, low-side MOSFET(s) of the other power stage(s) can function as a load for the specific power stage.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: January 29, 2019
    Assignee: QUANTA COMPUTER INC.
    Inventors: Kuang-Hua Ou Yang, Kuo-Chan Hsu, Yun-Teng Shih
  • Patent number: 10186960
    Abstract: A power supply includes a voltage converter circuit which converts an input voltage into an output voltage and outputs the output voltage, a voltage controller which controls the voltage converter circuit in response to a first feedback voltage or a second feedback voltage, a feedback terminal which supplies the first feedback voltage, an internal voltage divider circuit which supplies the second feedback voltage, and a switch unit which transfers the first feedback voltage or the second feedback voltage to the voltage controller.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: January 22, 2019
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Seok Hwan Lee, Jong Jae Lee, Yang Uk Nam, Se Young Heo, Jun Ki Hong
  • Patent number: 10132297
    Abstract: The present invention relates to a method for supervision of an electrical measurement in a wind power plant, with a plurality of wind turbine generators, the method comprises, a) measuring a measurement of an electrical parameter in the wind power plant, b) determining a difference between the measurement and a reference value, c) in case the difference is greater than a threshold value, incrementing an event counter, d) in case the event counter is incremented, raising a first warning flag. The invention also relates to a power plant controller arranged to supervise a wind power plant according to the method; the wind power plant comprises a plurality of wind turbine generators.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: November 20, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Jorge Martinez Garcia
  • Patent number: 10108211
    Abstract: A regulator includes: an ADC for detecting a change in an output voltage and outputting an error code; a control signal generation unit for generating a proportional control signal, integral control signals, a counting signal, and an error sign signal based on the error code; a proportional control unit for shifting the error code based on a proportional gain factor, and outputting a first control signal by synchronizing the shifted error code with the proportional control signal; an integral control unit for shifting the integral control signals based on the counting signal, shifting the shifted signals based on an integral gain factor to generate integral pulse signals, and outputting second control signals by controlling a pre-stored code value based on the integral pulse signals and the error sign signal; and a driving unit for outputting first and second currents in response to the first and second control signals.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: October 23, 2018
    Assignees: SK Hynix Inc., THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Hyun-Ju Ham, Jong-Hwan Kim, Min-Goo Seok, Do-Yun Kim
  • Patent number: 10063151
    Abstract: An apparatus for providing surge-tolerant power to an appliance is provided. The apparatus includes an input circuit for receiving a source of DC voltage. The apparatus also includes a pass device having a first terminal, a control terminal and a second terminal. Further, the apparatus includes a first means for providing an output voltage based on an input of the pass device. The apparatus also includes a second means for applying a voltage to a control terminal of the pass device based on the output voltage. The voltage is sufficient to put the pass device into a low impedance state between the first terminal and the second terminal thereof.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: August 28, 2018
    Assignee: Progress Rall Locomotive Inc.
    Inventor: James F. Wiemeyer
  • Patent number: 10056780
    Abstract: A power supply system includes a first converting stage, a second converting stage, and a third converting stage. The first converting stage is configured to generate a first voltage according to a first input voltage. The second converting stage is coupled to the first converting stage in series, and includes a first non-regulated power converter and a second non-regulated power converter. The first non-regulated power converter is configured to generate a second voltage according to the first voltage. The second non-regulated power converter is configured to generate a third voltage according to the second voltage. The second voltage is higher than the third voltage, and a varying range of the second voltage is wider than a varying range of the third voltage. The third converting stage is configured to generate a first output voltage according to the third voltage.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: August 21, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Pei-Qing Hu, Chao Yan, Jian-Hong Zeng
  • Patent number: 10031537
    Abstract: A differential probe provides a probe input which comprises two inputs for recording a first and second input signal. The differential probe further provides a first amplifier which is connected to the two inputs. The differential probe additionally provides a compensation device, which generates and superposes on the first and second input signal a differential offset signal. The compensation device also generates a common-mode offset signal which is independent of the differential offset signal.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: July 24, 2018
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Martin Peschke, Roland Krimmer, Alexander Kunze, Andreas Ziegler
  • Patent number: 9997118
    Abstract: A system for powering and controlling a backlit electronic display where redundancy is used to provide two independent paths from a pair of power sources to the backlight. Further, two independent paths are also used from a pair of power sources to the electronic display. If any one of the paths were to fail or begin to degrade in performance, the system contains monitoring devices which can direct another path to be used by the system. Two separate control circuits for the electronic may be used so that either one may be used to control the electronic display if one were to fail. Two separate temperature sensors and luminance sensors may also be used to increase the durability of the system.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: June 12, 2018
    Assignee: American Panel Corporation
    Inventors: William Dunn, Ken Mahdi
  • Patent number: 9959815
    Abstract: A light emitting assembly is described. In one embodiment, one or more light emitting diode (LED) devices and one or more microcontrollers are bonded to a same side of a substrate, with the one or more microcontrollers to switch and drive the one or more LED devices.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: May 1, 2018
    Assignee: APPLE INC.
    Inventors: Kapil V. Sakariya, Andreas Bibl, Kelly McGroddy
  • Patent number: 9958481
    Abstract: A current transformer arrangement, and method, include a current sensor for producing a sensor output voltage that is proportional to the input current flowing in a conductor; a first processing branch including a voltage calculating device for calculating the effective voltage value of the sensor output voltage; a second processing branch including a polarity detecting device having an input terminal connected with the current sensor output terminal to produce a polarity signal having one polarity when the conductor input current is either an alternating current, a hybrid current, or a direct current flowing in one direction, and the opposite polarity when the conductor input current is a direct current flowing in the opposite direction; and a multiplier device for modifying the effective voltage value to produce a signed effective voltage having a polarity corresponding with the polarity of the polarity signal. A modifying circuit modifies the signed effective voltage.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: May 1, 2018
    Assignee: Weidmueller Interface GmbH & CO. KG
    Inventors: Michael Gerkens, Christian Heggemann, Hans Schlingmann
  • Patent number: 9954434
    Abstract: A controller for a multiphase converter comprises a first stage controller for producing a first gate drive signal to turn on a first power transistor of a first boost converter; a delay element configured to produce a delayed signal by delaying the first gate drive signal by half a cycle length; a time difference detection element configured to: output a turn on command based on a zero crossing detection (ZCD) signal indicating that one or more zero current conditions of a second boost converter of the multiphase converter are met and the delayed signal; and a second stage controller configured to assert a second gate drive signal to turn on a second power transistor of the second boost converter based on the turn on command.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: April 24, 2018
    Assignee: STMicroelectronics S.r.l.
    Inventors: Alberto Bianco, Giuseppe Scappatura
  • Patent number: 9853545
    Abstract: A power supply is configured to automatically and rapidly switch from a voltage maintaining mode to a current limiting mode (at times that are unpredictable from a point of view of the power supply) when supplying replenishing current to a combination of a power insulated gate switching device and power capacitor that drive relatively large surges of pulsed power through a load such as a laser emitter of a Time of Flight (TOF) determining system. The current limiting mode is automatically activated by the start of each train of large surges of pulsed power and it replenishes charge to the power capacitor on a time averaged basis such that the capacitor develops a temperature appropriate voltage for providing the time averaged current to the power insulated gate switching device and its load and causing the load (e.g., laser) to output a desired amount of output power.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: December 26, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: David C. Wyland
  • Patent number: 9800149
    Abstract: To provide a switching regulator equipped with an on-time control circuit small in power consumption. An on-time control circuit is configured to be equipped with switches each turned on/off by a signal controlling on and off of a switching element and be turned off during an off-time of the switching element.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: October 24, 2017
    Assignee: SII SEMICONDUCTOR CORPORATION
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 9798344
    Abstract: This invention is an electronic circuit with a low power retention mode. A single integrated circuit includes a circuit module and a droop switch circuit supplied by a voltage regulator. In a normal mode a PMOS source-drain channel connects the voltage regulator power to the circuit module power input or isolates them dependent upon a power switch input. In a low power mode a second PMOS connected between the first PMOS gate and output diode connects the first PMOS. This supplied the circuit module from the voltage regulator power as reduced in voltage by a diode forward bias drop. This lower voltage should be sufficient for flip-flops in the circuit module to retain their state while not guaranteeing logic operation. There may be a plurality of chain connected droop switch each powering a corresponding circuit module.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: October 24, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ramakrishnan Venkatasubramanian, Shane Stelmach, Soman Purushotaman, Michael Gill, Jose Luis Flores
  • Patent number: 9722506
    Abstract: A controller for a switched mode power converter includes limit-to-valley ratio circuitry, an on-time generator, and a drive circuit. The limit-to-valley ratio circuitry is coupled to generate a ratio signal in response to sensing a switch current of a switch that regulates an output of the switched mode power converter. The ratio signal is representative of a time ratio between a first length of time that the switch current is at or above a switch current limit and a second length of time that the switch current is at or below a switch current valley that is a portion of the switch current limit. The on-time generator is coupled to vary a switch on-time signal in response to receiving the ratio signal. The drive circuit is coupled to output a drive signal to a control terminal of the switch in response to receiving the switch on-time signal.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: August 1, 2017
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 9703306
    Abstract: In one example, a method for compensating for a temperature effect during operation of a voltage regulator circuit includes applying a load current at an output of the voltage regulator circuit, measuring a first output voltage at the output, measuring a reference current or voltage, increasing the load current, measuring a change in the reference current or voltage corresponding to the increased load current, measuring a second output voltage when the measured change in the reference current exceeds a threshold, and determining a temperature coefficient (TC) value based on the measured second output voltage.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: July 11, 2017
    Assignee: Analog Devices, Inc.
    Inventors: Brandon Day, Mark Szostkiewicz
  • Patent number: 9666148
    Abstract: A system for powering and controlling an LED-backlit liquid crystal display (LCD) where redundancy is used to provide two independent paths from a pair of power supplies to the LED backlight. Further, two independent paths are also used from a pair of power supplies to the LCD. If any one of the paths were to fail or begin to degrade in performance, the system contains monitoring circuits which can direct another path to be used by the system. Two separate control circuits for the LCD may be used so that either one may be used to control the LCD if one were to fail. Two separate temperature sensors and luminance sensors may also be used to increase the durability of the system.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: May 30, 2017
    Assignee: American Panel Corporation
    Inventors: William Dunn, Ken Mahdi
  • Patent number: 9602013
    Abstract: A controller for controlling a power supply includes a feedback signal generator to generate a feedback signal representative of an output current in response to an output sense signal. A state selector circuit receives the feedback signal and outputs a digital state signal to set an operational state of a switch of the power supply. The state selector circuit adjusts the digital state signal in response to feedback information at an end of a feedback period. A driver circuit receives the digital state signal and generates a drive signal in response to the digital state signal. The drive signal drives switching of the switch in accordance with the operational state of the switch.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: March 21, 2017
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Ricardo Luis Janezic Pregitzer, Mingming Mao, Peter Vaughan
  • Patent number: 9547355
    Abstract: A controller for voltage regulators providing power to computer processors may control the number of active phases of each voltage regulator according to a determined electrical current demand from the processor. By relying on electrical current demand rather than a P-state, the latter generally indicating a power conservation status, improved regulator efficiencies may be had, in particular responding to situations where low current demand occurs under heavy processor demand because of C-state variations.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: January 17, 2017
    Assignee: Wisconsin Alumni Research Foundation
    Inventor: Nam Sung Kim
  • Patent number: 9541974
    Abstract: The present invention relates to a voltage converter based on a switching regulator, and more particularly, to systems, devices and methods of dynamically controlling an output of the voltage converter to rapidly transition between different power supply voltages as required in many electronic devices. The switching regulator generates an output supply voltage that tracks a voltage originally provided by an internal DAC. During the supply voltage variation, a step control signal is provided to introduce a supplemental voltage step into the reference voltage before the reference voltage is used to generate the output supply voltage. The switching regulator is thereby overdriven under this supplemental voltage step, enhancing the slew rate and the settling time of the output supply voltage to meet stringent requirements imposed by many electronic devices.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: January 10, 2017
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Armando Presti, Vincent Trimeloni, Antonio Magazzu
  • Patent number: 9527277
    Abstract: There is provided a liquid discharging apparatus including: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a ground terminal which electrically connects the modulation portion to a ground potential; a transistor which generates an amplification modulation signal amplified from the modulation signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; a feedback circuit which generates a feedback signal based on the driving signal, and sends back the feedback signal to the modulation portion via a feedback terminal; and a piezoelectric element which is displaced as the driving signal is applied, in which the modulation portion, the ground terminal, and the feedback terminal are formed on the same semiconductor substrate, and in which, in a plan view, the ground terminal and the feedback terminal are disposed being adjacent to each other.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: December 27, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Tadahiro Fujita
  • Patent number: 9490699
    Abstract: A current mode converter includes a converter stage comprising a first switch, a second switch, an inductor, and a capacitor, and a digital-to-analog converter configured to convert a digital target current signal to an analog current signal. The current mode converter further includes a slope compensation circuit coupled to the digital-to-analog converter and is configured to convert the analog target current signal to a slope compensated analog target signal. A comparator is coupled to the converter stage and the slope compensation stage and is configured to generate and output a signal when a value of an actual analog signal is equal to a value of the slope compensated analog target signal.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 8, 2016
    Assignee: Intel Deutschland GmbH
    Inventors: Stephan Henzler, Giacomo Curatolo, Marcin Daniel
  • Patent number: 9467051
    Abstract: A switching regulator using current mode control and adaptive slope compensation includes a DC correction circuit to introduce a DC correction signal to cancel the DC offset error generated by the slope compensation signal. In some embodiments, the DC correction signal is a function of the input voltage and the output voltage and is applied in response to the slope compensation signal being applied. In one embodiment, the DC correction signal is a linear function of the input voltage and the output voltage.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: October 11, 2016
    Assignee: Micrel, Inc.
    Inventors: Ioan Stoichita, Paolo Nora, Charles Vinn, Bruce Larson
  • Patent number: 9461708
    Abstract: A power control server outputs power through a power line, outputs a high-frequency signal and communicates with an electronic device to which the power is output, through the power line, and reads out device information including at least identification information that identifies the electronic device, obtains user information related to a user who uses the electronic device, and transmits the obtained user information and the read out device information to an information management server. The information management server receives the user information and the device information transmitted from the power control server, and performs user registration related to the electronic device identified by the identification information included in the device information, based on the received user information. The present technology can be applied to a power supply control system that supplies the power to an electronic device, for example.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 4, 2016
    Assignee: Sony Corporation
    Inventors: Isao Soma, Kazuyoshi Takemura, Takanori Washiro
  • Patent number: 9442558
    Abstract: In one embodiment an apparatus includes a multiplicity of processor components; one or more device components communicatively coupled to one or more processor components of the multiplicity of processor components; and a controller comprising logic at least a portion of which is in hardware, the logic to schedule one or more forced idle periods interspersed with one or more active periods, a forced idle period spanning a duration during which the multiplicity of processor components and the one or more device components are simultaneously placed in respective idle states that define a forced idle power state during isolated sub-periods of the forced idle period. Other embodiments are disclosed and claimed.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: September 13, 2016
    Assignee: INTEL CORPORATION
    Inventors: Paul S. Diefenbaugh, Eugene Gorbatov, Andrew Henroid, Eric C. Samson, Barnes Cooper
  • Patent number: 9417648
    Abstract: This invention is an electronic circuit with a low power retention mode. A single integrated circuit includes a circuit module and a droop switch circuit supplied by a voltage regulator. In a normal mode a PMOS source-drain channel connects the voltage regulator power to the circuit module power input or isolates them dependent upon a power switch input. In a low power mode a second PMOS connected between the first PMOS gate and output diode connects the first PMOS. This supplied the circuit module from the voltage regulator power as reduced in voltage by a diode forward bias drop. This lower voltage should be sufficient for flip-flops in the circuit module to retain their state while not guaranteeing logic operation. There may be a plurality of chain connected droop switch each powering a corresponding circuit module.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: August 16, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ramakrishnan Venkatasubramanian, Shane Stelmach, Soman Purushotaman, Michael Gill, Jose Luis Flores
  • Patent number: 9345083
    Abstract: The embodiments discussed herein relate to systems, methods, and apparatus for executing a pulse frequency modulation (PFM) mode of a boost converter in order to ensure that a switching frequency of the boost converter is a above an audible frequency threshold. In this way, a user operating a display device that is controlled by the boost converter will not be disturbed by audible noises generated at the display device. The PFM mode enforces an audible frequency threshold by using control circuitry designed to increase or decrease the frequency of a pulse signal depending on how the frequency of the pulse signal changes over time. The control circuitry can apply an additional load to the boost converter in order to increase the frequency of the pulse signal when the frequency is approaching the audible frequency threshold.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 17, 2016
    Assignee: Apple Inc.
    Inventors: Asif Hussain, Behzad Mohtashemi, Mohammad J. Navabi-Shirazi, Jingdong Chen, Manisha P. Pandya
  • Patent number: 9335803
    Abstract: In an embodiment, a processor includes voltage calculation logic to calculate a plurality of maximum operating voltage values each associated with a number of active cores of the plurality of cores, based at least in part on a plurality of coefficient values. In this way, the processor can operate at different maximum operating voltages dependent on the number of active cores. Other embodiments are described and claimed.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: May 10, 2016
    Assignee: Intel Corporation
    Inventors: Zhiguo Wang, David J. Ayers, Srikanth Balasubramanian, Sukirti Gupta, Stefan Rusu, Stephen M. Ramey
  • Patent number: 9306452
    Abstract: An apparatus comprises an output port for a circuit load, a first input port for an energy harvest source, an input/output port a second energy source, a first circuit path from the energy harvest source to the second energy source at the input/output port and to the variable load at the output port, a second circuit path from the second energy source to the output port, a cold start circuit that produces a first voltage level at the output port by charging a capacitor at the output port using energy of the energy harvest source, and a main converter circuit that produces a second regulated voltage level at the input/output port using energy of the energy harvest source when the voltage at the output port capacitor is above a specified voltage value and uses the energy of the capacitor at the output port during startup of the main converter circuit.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: April 5, 2016
    Assignee: Analog Devices Global
    Inventors: Hua-Jung Yang, Bin Shao, Suyi Yao, Yanfeng Lu
  • Patent number: 9292068
    Abstract: In one embodiment, the present invention includes a multicore processor with a power controller to control a frequency at which the processor operates. More specifically, the power controller can limit a maximum operating frequency of the processor to less than a configured maximum operating frequency to enable a reduction in a number of frequency transitions occurring responsive to power state events, thus avoiding the overhead of operations performed in handling such transitions. Other embodiments are described and claimed.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: March 22, 2016
    Assignee: Intel Corporation
    Inventors: Avinash N. Ananthakrishnan, Efraim Rotem, Doron Rajwan, Eliezer Weissmann, Ryan Wells, Nadav Shulman
  • Patent number: 9244473
    Abstract: Voltage regulators in a current share arrangement may provide a total current to a common load, and may be simultaneously turned on to ramp up member currents. Each voltage regulator may provide a respective member current in the current share configuration. A target current value may be determined from a cycle-averaged current value of the member currents and a voltage error value of the voltage regulator, and each member current may be ramped to the target current value instead of the cycle-averaged current value when the voltage regulators are turned on, resulting in more stable and balanced current ramping. A predictive multi-phase digital controller may therefore operate according to a target current determined based on a measured or inferred inductor current and an error voltage. Pulse-width, pulse position and pulse frequency (adding or skipping pulses) may be calculated according to the operation of the predictive multi-phase digital controller.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: January 26, 2016
    Assignee: Intersil Americas LLC
    Inventors: Chris M. Young, Sunder S. Kidambi, James R. Toker