Parallel-charge, Series-discharge (e.g., Voltage Doublers) Patents (Class 307/110)
  • Patent number: 9653986
    Abstract: A multi-level, step-up converter circuit includes an inductor including one terminal in communication with an input voltage supply. N transistor pairs are connected in series, where N is an integer greater than one. First and second transistors of a first pair of the N transistor pairs are connected together at a node. The node is in communication with another terminal of the inductor. Third and fourth transistors of a second pair of the N transistor pairs are connected to the first and second transistors, respectively. (N?1) capacitors have terminals connected between the N transistor pairs, respectively. An output capacitor has a terminal in communication with at least one transistor of the N transistor pair.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 16, 2017
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Serhii Mikhailovich Zhak, Mark Anthony Belch, Brett A. Miwa, David Harrington, Jonathan King
  • Patent number: 9647538
    Abstract: Provided herein are a voltage regulator, a memory system having the same and an operation method thereof. The memory system includes a memory device configured to store data, a controller configured to control the memory device, and a voltage regulator configured to supply a pump-out voltage to the memory device or the controller so that the memory device or the controller is operated in the following manner: until a level of the pump-out voltage is increased to a second reference voltage lower than a first reference voltage, the pump-out voltage is output using a clock having a first frequency; when the pump-out voltage exceeds the second reference voltage and does not exceed the first reference voltage, the pump-out voltage is output using a clock having a second frequency lower than the first frequency; and when the pump-out voltage exceeds the first reference voltage, the pump-out voltage is output using the clock having the first frequency.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 9, 2017
    Assignee: SK Hynix Inc.
    Inventors: Ki Soo Kim, Jin Seong Kang
  • Patent number: 9608512
    Abstract: A control circuit for a step-up converter includes a soft start module configured to control states of N transistor pairs of the step-up converter, where N is an integer greater than two. A driver module is in communication with the soft start module and configured to generate a first signal when N transistor pairs of the step-up converter are ready to switch. A first charging circuit is configured to charge (N?1) capacitors of the step-up converter to an input voltage of the step-up converter in response to the first signal and to generate a second signal when charging is complete. A second charging circuit is configured to sequentially charge the (N?1) capacitors of the step-up converter to (N?1) predetermined voltage values in response to the first signal and the second signal and before operation of the step-up converter begins.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 28, 2017
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Serhii Mikhailovich Zhak, Mark Anthony Belch, Brett A. Miwa, David Harrington, Jonathan King
  • Patent number: 9565724
    Abstract: Disclosed are an alternating current rectifying circuit and an alternating current rectifying method for driving an LED module.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: February 7, 2017
    Assignee: SICHUAN SUNFOR LIGHT CO., LTD.
    Inventors: Dongming Li, Zhengyong Feng, Wentao Long, Mian Yang
  • Patent number: 9548182
    Abstract: An instrument producing a charged particle beam according to the present invention is provided with: a charged particle source; a plurality of first electrodes disposed along a direction of irradiation of charged particles from the charged particle source; a plurality of insulation members disposed between the first electrodes; and a housing mounted around the plurality of first electrodes. The housing is formed from an insulating solid material, and includes a plurality of second electrodes disposed at positions in proximity to the plurality of first electrodes. At least one of the plurality of second electrodes is electrically connected to at least one of the plurality of first electrodes, each of the plurality of second electrodes having the same potential as the potential of the proximate one of the first electrodes.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: January 17, 2017
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Takashi Onishi, Shunichi Watanabe, Minoru Kaneda
  • Patent number: 9543820
    Abstract: A power inverter device includes an inverter that converts a direct-current (DC) power to an alternating-current (AC) power having an output AC voltage, and a capacitor circuit electrically connected to the inverter. The capacitor circuit is operable to start supplying a capacitor voltage to the inverter at a time point when a predetermined waiting time lapses from a zero cross point of the output AC voltage at a starting up of the inverter circuit, wherein the capacitor voltage has a phase shifted by ?/4 radian from the output AC voltage. The inverter is operable to generate the output AC power based on the capacitor voltage and the DC power. The predetermined waiting time is a duration is equal to 2?n+3?/4 radian or 2?n+7?/4 radian of a phase of the output AC voltage (n is an integer not smaller than zero). This power inverter device can reduce a ripple power of the input power early after the starting-up.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: January 10, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Masashi Okamatsu
  • Patent number: 9537324
    Abstract: A wireless response system and method of receiving user input selections at a base station includes distributing a plurality of response units to users. The response units wirelessly communicate with the base station in order to retrieve user responses received by the response units. Each of the response units has a user input device that is configured to receiving user input selections, a controller that is responsive to the user input device to process user inputs and to communicate responses wirelessly to the base station and a power supply having a super capacitor. The super capacitor is charged with a wireless-charging circuit and current is supplied from the super capacitor to the controller. Current supplied to the controller is controlled.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: January 3, 2017
    Assignee: Fleetwood Group, Inc.
    Inventors: Emil J. Ureel, Kyle A. Israels
  • Patent number: 9520776
    Abstract: Techniques are presented for improving the efficiencies of multi-stage charge pumps by reducing the amount of voltage lost across the inter-stage transfer switches of the pump through use a selective body bias. The voltage level from both branches of one stage is each supplied though a corresponding diode to the bulk connection of the transfer switch after the subsequent stage in both branches. This arrangement results in each stage providing a largely uniform amount of gain, without the usual increase of voltage drop with increasing numbers of stages.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: December 13, 2016
    Assignee: SanDisk Technologies LLC
    Inventors: Gooty Sukumar Reddy, Sridhar Yadala
  • Patent number: 9515555
    Abstract: A floating power converter includes direct current to direct current (DC-DC) converter circuitry having at least one converter control terminal for receiving at least one control signal, a high side (H-S) converter input terminal, a low side (L-S) converter input terminal, and a converter output terminal. The floating power converter also has an H-S source selector configured to selectively couple either a first H-S voltage source or a second H-S voltage source to the H-S converter input terminal in response to a selector control signal. Moreover, an L-S source selector is configured to selectively couple either a first L-S voltage source or a second L-S voltage source to the L-S converter input terminal in response to the selector control signal.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: December 6, 2016
    Assignee: Qorvo US, Inc.
    Inventor: Douglas R. Farrenkopf
  • Patent number: 9502960
    Abstract: The present invention describes an electrical converter system for power supply systems, comprising at least two identical individual modules connected consecutively, characterized in that each individual module have at least four internal switching elements, at least one energy storage element and at least four connectors, wherein the connectors are paired and serve as a first and a second terminal pair; the internal switching elements of each individual module are designed in such manner that they are able to selectively connect one or both connectors of each terminal pair to the energy storage element; the cascaded connection of at least two individual modules is made in such manner that the connectors in the second terminal pair of a preceding individual module are each connected to the connectors of the first terminal pair in the respective following individual module, and at least one terminal of the first terminal pair of the first individual module of the cascaded connection and at least one terminal
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: November 22, 2016
    Assignee: Technische Universitaet Muenchen
    Inventors: Thomas Weyh, Stefan Goetz
  • Patent number: 9496880
    Abstract: Certain aspects of the present disclosure provide methods and apparatus for implementing a fully differential charge pump circuit that eliminates a source of noise and power consumption by using a low-noise switched-capacitor common-mode feedback (CMFB) circuit, rather than a continuous-time amplifier-based CMFB circuit. The fully differential charge pump circuit presented in this disclosure includes the switched-capacitor CMFB (SC-CMFB) unit connected to differential output nodes of the charge pump and provides a feedback signal to the charge pump to control a common-mode voltage of the differential signals based on a reference common-mode voltage. In certain aspects, a replica phase-frequency detector (PFD), a frequency divider, and a non-overlapping clock generator provides control signals for the SC-CMFB circuit.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: November 15, 2016
    Assignee: Qualcomm Incorporated
    Inventors: Wenjing Yin, Jeffrey Mark Hinrichs
  • Patent number: 9496783
    Abstract: A direct current (DC) to DC converter, including: input ports for receiving an input DC voltage; output ports for outputting an output DC voltage; a first matrix of capacitors and switches; a second matrix of capacitors and switches; and a control circuit, coupled to the switches of the first and second matrices, configured to repetitively: (i) configure the first matrix to a charge configuration and couple the first matrix to the input ports while configuring the second matrix to a discharge configuration and coupling the second matrix to the output ports; (ii) maintain the charge and discharge configurations for a first period of time; (iii) configure the second matrix to the charge configuration and couple the second matrix to the input ports while configuring the first matrix to the discharge configuration and couple the first matrix to the output ports; and (iv) maintain the charge and discharge configurations for a second period of time.
    Type: Grant
    Filed: June 2, 2013
    Date of Patent: November 15, 2016
    Assignee: RAMOT AT TEL-AVIV UNIVERSITY LTD.
    Inventors: Sigmond Singer, Yuval Beck
  • Patent number: 9490725
    Abstract: Examples of multi-stage programmable rectifiers are provided herein. Each rectifier stage can include a first transistor and a switch connected to the first transistor. A threshold voltage of the first transistor can be programmed through selection of one of a plurality of voltages available at the switch. Each rectifier stage can also include a second transistor that can be connected in series with the first transistor. An output capacitor can be connected to the second transistor at an output of the rectifier stage. The plurality of voltages provided at the switch allows the threshold voltage of the first transistor to be adjusted in either a positive or negative position to increase efficiency of the rectifier. A calibration process can be used to identify the position of each switch in the rectifier stages that results in the highest efficiency or rectifier output voltage.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: November 8, 2016
    Assignee: Oregon State University
    Inventors: Lingli Xia, Patrick Y. Chiang, Jiao Cheng
  • Patent number: 9491151
    Abstract: The invention provides a memory apparatus, a charge pump circuit, and a voltage pumping method thereof. The charge pump circuit including a plurality of delay units, a latch circuit, and a plurality of charge pump units. The delay units respectively generate a plurality clock signals according to an output clock signal. The latch circuit receive a final stage clock signal of the clock signals and a latch enable signal. The latch circuit decides whether to latch final stage clock signal or not to generate the output clock signal according to the latch enable signal. The first stage of the charge pump unit receives an input voltage, and the charge pump units operate a voltage pumping operation on the input voltage to generate an output voltage according to the clock signals and the output clock signal.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: November 8, 2016
    Assignee: eMemory Technology Inc.
    Inventor: Chi-Yi Shao
  • Patent number: 9484807
    Abstract: A high efficiency switched capacitor voltage regulator circuit and a method of efficiently generating an enhanced voltage from an input voltage supply. An input voltage Vin from a main power source is the base voltage to be pumped to an enhanced voltage. Auxiliary voltage sources V1 and V2 are from sources (or grounds) available in the system. During phase 1 of a clock signal, a pump capacitor is charged to ?V=V2?V1. During phase 2 of the clock signal, the pump capacitor is connected in series between Vin and an output capacitor, resulting in the sum voltage V=Vin+?V being generated across the output capacitor.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: November 1, 2016
    Assignee: Maxlinear, Inc.
    Inventors: Branislav Petrovic, Joseph Nabicht
  • Patent number: 9479050
    Abstract: Methods and systems for generating voltages greater than a supply voltage are described. In some embodiments, a charge pump system may generate a boosted output voltage greater than the supply voltage using one or more charge pump stages that are arranged in series between the supply voltage and the boosted output voltage. A charge pump stage of the one or more charge pump stages may include a plurality of boosting capacitors that are arranged in series and charged to a charging voltage during a charging phase. During the charging phase, each boosting capacitor of the plurality of boosting capacitors may be charged to a fraction of the charging voltage applied across all of the plurality of boosting capacitors. After the charging phase, the plurality of boosting capacitors may be arranged in parallel and each boosting capacitor of the plurality of boosting capacitors may be boosted during a boosting phase.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: October 25, 2016
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Gooty Sukumar Reddy, Sridhar Yadala
  • Patent number: 9462445
    Abstract: A mobile communication terminal and a system and a method for safety service using the terminal for checking the user's location and a situation of the surroundings of the user at the time of an emergency such as kidnapping, accident, and so on, are provided. The mobile communication terminal includes a camera, an angle-of-view changing unit which changes angle-of-view of the camera, and a controller which controls the angle-of-view changing unit to change the angle-of-view of the camera and controls the camera to capture the surroundings corresponding to the angle-of-view at the time of emergency mode.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: October 4, 2016
    Assignee: THINKWARE CORPORATION
    Inventors: Yongrae Jo, Junghwa Yoo, Jihyun Yoo
  • Patent number: 9450506
    Abstract: A voltage-step down rectifier topology suitable for integration on a die of an integrated circuit is described. In one embodiment, a switched capacitor rectifier is provided having an architecture such that an input voltage swing of the switched-capacitor rectifier is a factor N times an output voltage where N depends upon the number of stages such that the switched-capacitor rectifier can provide a ?/(2N) step-down voltage conversion ratio between an input fundamental ac peak voltage to the output dc voltage. In one embodiment, the rectifier is used in dc-dc conversion. In one embodiment, the rectifier is used in ac power delivery to low-voltage electronics.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: September 20, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: David J. Perreault, Wei Li, Nathaniel Jay T. Salazar
  • Patent number: 9444329
    Abstract: A voltage converter device converts an input signal having a given input voltage value into an output signal having an output voltage different from the input voltage. The device comprises a main module, arranged between an input terminal and a first circuit node, The device is adapted to output at the first circuit node a pulse-width-modulated signal switching between a first voltage value and a second voltage value, defining a switching range, by switching successively between a first mode of operation and a second mode of operation. The switching range of the pulse width modulation has an amplitude, calculated as the absolute difference between the first and the second voltage value, inferior or equal to half the input voltage.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: September 13, 2016
    Assignee: ST-Ericsson SA
    Inventor: Patrik Arno
  • Patent number: 9391538
    Abstract: A power converter includes a DC port and an AC port. A set of controllable “DC” switches couples the DC port to a central series-resonant circuit, and a set of “AC switches couples the central circuit through a filter to the AC port. A switch control circuit responds to secondary-to-tertiary and inversion time percentages, and a modulator is responsive to the AC filter voltage and to the current at the AC port, for generating the inversion (inv) and secondary-to-tertiary (s2t) time percentages.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: July 12, 2016
    Assignee: Princeton Power Systems, Inc.
    Inventor: Zahra Mohajerani
  • Patent number: 9362818
    Abstract: A charge pump includes an input, an output, and a fixed voltage node; a first capacitor and at least a second capacitor; and a plurality of switches adapted to selectively couple the first capacitor and the at least the second capacitor to the input, the output, and the fixed voltage node. A switch controller is adapted to switch the plurality of switches in response to at least three phase signals to provide fixed gains. A phase generator is adapted to generate the at least three phase signals, wherein at least one of the at least three phase signals has a duty cycle that is different from at least one other of the at least three phase signals. The phase generator is also adapted to adjust the frequency of a clock signal used to generate the at least three phase signals so that a minimum switching frequency is provided.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: June 7, 2016
    Assignee: RF Micro Devices, Inc.
    Inventors: Philippe Gorisse, Nadim Khlat
  • Patent number: 9356507
    Abstract: A charge pump includes a chip and a package substrate packaged on the chip and installed in a circuit board. One of the 1st˜(X?Y)th external pins of the package substrate is electrically connected to the (X?Y)th input pin of the chip, and the other end of the same external pin is electrically connected to the input voltage of the circuit board. Thus, when the input voltage is being boosted through each capacitor of the circuit board, it is free from the action of the 1st through (X?Y?1)th transistors of the chip and therefore the original design of the 1st through (X?Y?1)th transistors can be maintained without causing any change in the output voltage Thus, the invention eliminates the problem of the prior art design that needs to change the internal circuit design when a different output voltage is required.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: May 31, 2016
    Assignee: eGalax eMPIA Technology Inc.
    Inventor: Po-Chuan Lin
  • Patent number: 9295850
    Abstract: In some examples, a device for delivering electrical stimulation to a medical patient includes an electrical stimulation generator, a coupling circuit, and a processing module. The electrical stimulation generator is configured to generate electrical stimulation. The coupling circuit includes a first node connected to the electrical stimulation generator, a second node configured to deliver the electrical stimulation to the patient, and a capacitor. The coupling circuit is configured to operate in a first state to couple the capacitor between the first and second nodes in a first orientation and operate in a second state to couple the capacitor between the first and second nodes in a second orientation that is opposite to the first orientation. The processing module is configured to set the state of the coupling circuit to one of the first and second states.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 29, 2016
    Assignee: Medtronic, Inc.
    Inventor: Todd A. Kallmyer
  • Patent number: 9287771
    Abstract: A capacitor connected to a microcomputer voltage wiring is downsized. A series regulator on an electronic control unit for automotive includes a battery as an in-vehicle power supply, a relay, an input side capacitor, a series regulator circuit, and an output side capacitor, and is connected to a microcomputer. The series regulator circuit includes an n-channel MOSFET, a gate voltage regulator circuit as an output control circuit of an FET, and a gate voltage holding capacitor. A capacitor GND voltage (gate voltage) is adjusted by the gate voltage regulator circuit to convert an input side capacitor voltage into an output side capacitor voltage, and supply a microcomputer current to the microcomputer.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: March 15, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ayumu Hatanaka, Takuya Mayuzumi, Chihiro Sato, Yoshitaka Abe, Daisuke Sekine, Hirofumi Kurimoto
  • Patent number: 9287707
    Abstract: A system for a power supply, wherein the power supply is configured to receive an alternating current voltage and supply an output voltage, the system including a switch and a control circuit. The switch receives the alternating current voltage and charges, in response to the power supply receiving the alternating current voltage and not supplying the output voltage, a capacitance to a first voltage. The first voltage is output to a first circuit controlling the power supply while the power supply is receiving the alternating current voltage and not supplying the output voltage. The control circuit deactivates the switch in response to the power supply receiving the alternating current voltage and supplying the output voltage. In response to the control circuit deactivating the switch, the switch stops charging the capacitance, and the first circuit receives the output voltage of the power supply.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: March 15, 2016
    Assignee: Marvell World Trade LTD.
    Inventor: Rajesh Tiruvuru
  • Patent number: 9270204
    Abstract: A circuit-based technique enhances the power output of electrostatic generators employing an array of axially oriented rods or tubes or azimuthal corrugated metal surfaces for their electrodes. During generator operation, the peak voltage across the electrodes occurs at an azimuthal position that is intermediate between the position of minimum gap and maximum gap. If this position is also close to the azimuthal angle where the rate of change of capacity is a maximum, then the highest rf power output possible for a given maximum allowable voltage at the minimum gap can be attained. This rf power output is then coupled to the generator load through a coupling condenser that prevents suppression of the dc charging potential by conduction through the load. Optimized circuit values produce phase shifts in the rf output voltage that allow higher power output to occur at the same voltage limit at the minimum gap position.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: February 23, 2016
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Richard F Post
  • Patent number: 9270407
    Abstract: A license plate assembly includes a frame receiving a conventional license plate and at least one blanking flash generator arranged to generate a blanking flash at the license plate in response to a monitoring flash from an external monitoring device. The monitoring device is designed to take an image of the license plate and the blanking flash is obscuring the license plate to prevent or interfere with the taking of the image.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: February 23, 2016
    Assignee: NOLIMITS ENTERPRISES INC.
    Inventor: Jonathan Dandrow
  • Patent number: 9263965
    Abstract: Full wave voltage multipliers mostly provide only even multiples (2×, 4×, 8× . . . ). This invention details a process to produce a full wave multiplier that will provide voltage with an odd numbered multiplicand (3×, 5×, 7×, etc.) from the next-higher-numbered, and thus even-numbered, full wave multiplier (so a 3× will be devised from the 4×, a 5× from the 6×, and for any odd (n)×, from the even (n+1)×). Each of a simplified, base 3× and 5× full wave voltage multiplier are also disclosed.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: February 16, 2016
    Inventor: Lawrence A. Leske
  • Patent number: 9207701
    Abstract: A supply voltage generating circuit that enables a reduction in chip area includes: a booster for outputting a boosted voltage upon generating the boosted voltage by charge pumping of a capacitor element; a power-supply step-down unit for stepping down voltage of an external power supply to a voltage within a breakdown-voltage range of the capacitor element, and applying the stepped-down voltage to the power supply of the booster; and a switch element for switching between application of the external power supply to the power supply of the booster directly or via the power-supply step-down unit. The booster comprises multiple stages of booster circuits. The thicknesses of gate oxide films of capacitor elements constituted by MOS transistors included in respective ones of the booster circuits are the same and are made smaller than the thickness of a gate oxide film of a MOS transistor included in a load circuit having the output of the booster at its power supply.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: December 8, 2015
    Assignee: PS4 Luxco S.a.r.l.
    Inventors: Koichiro Hayashi, Hitoshi Tanaka
  • Patent number: 9099937
    Abstract: A power converter includes a group of serial three-level inverters including 2n (n=2) three-level inverters connected in series, two switch circuits for selecting an output from either one of two of the three-level inverters in the group of serial three-level inverters, and a switch circuit for selecting an output from either one of the switch circuits. Each three-level inverter includes two switch elements connected in series, two capacitors connected in series, and a switch element for connecting the first node to the second node, the switch elements being connected in parallel to the capacitors.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: August 4, 2015
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Shinzo Tamai
  • Patent number: 9054576
    Abstract: A high efficiency DC/DC converter with high conversion ratio is provided. The DC/DC converter includes a power switch for selectively switching an electrical connection between one side of a power supply and anodes of a first diode and a second diode, a first capacitive element whose one side is connected to a cathode of the first diode, a second capacitive element whose one side is connected to a cathode of the second diode, a first-first switch for selectively switching an electrical connection between the other side of the first capacitive element and the other side of the power supply, and a second-first switch for selectively switching an electrical connection between the other side of the first capacitive element and one side of the second capacitive element.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: June 9, 2015
    Assignee: INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERISITY
    Inventors: Yong Cheol Kang, Jul Ki Seok, Ali Gandomkar
  • Patent number: 9007791
    Abstract: Representative implementations of devices and techniques minimize switching losses in a switched capacitor dc-dc converter. The slope of the charging and/or discharging phase may be modified, smoothing the transitions from charge to discharge and/or discharge to charge of the switched capacitor.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: April 14, 2015
    Assignee: Infineon Technologies AG
    Inventors: Stefano Marsili, Werner Hoellinger, Gerhard Maderbacher
  • Publication number: 20150015088
    Abstract: The present document relates to power transformers for electronic computing devices. In particular, a power converter configured to convert electrical power at a DC input voltage Vin into electrical power at a DC output voltage is described. The power converter comprises a plurality of flying capacitors, and a plurality of switches which are configured to arrange the plurality of flying capacitors in accordance to a sequence of operation phases. The power converter comprises a control unit configured to control the plurality of switches to repeat the sequence of operation phases at a duty cycle frequency. The plurality of flying capacitors is arranged in series during the operation phases of the sequence of operation phases. The sequence of operation phases comprises at least two operation phases during which the plurality of flying capacitors is arranged in a different order.
    Type: Application
    Filed: June 25, 2014
    Publication date: January 15, 2015
    Inventor: Holger Petersen
  • Patent number: 8933704
    Abstract: A device for testing capacitive loads of a power supply includes a controller, a power supply switching circuit, a capacitive load switching circuit, and a current sampling circuit. The power supply switching circuit selects one of output voltages of the power supply to be electronically connected to the capacitive load switching circuit and the current sampling circuit. The current sampling circuit samples an output current of one output of the power supply selected by the controller. The controller turns on and off switches of the capacitive load switching circuit for matching an output current of the power supply with a reference current until the output current equals to the reference current. The controller outputs a total magnitude of the capacitive loads.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: January 13, 2015
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Yun Bai, Fu-Sen Yang, Song-Lin Tong
  • Patent number: 8917160
    Abstract: An RFID module including an antenna element forming an RFID antenna; an RFID circuit block to which the antenna element is connected; and a first resonance frequency adjustment circuit having an element that includes a drain terminal connected to the antenna element, a gate terminal that is grounded, and a source terminal that is grounded, wherein a pull-up resistor is connected between the drain terminal and a power supply.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: December 23, 2014
    Assignees: Sony Corporation, Sony Mobile Communications Inc.
    Inventors: Takaaki Tsushima, Toshiyuki Takahashi, Toshihiko Takeda, Zenkichi Mihara
  • Publication number: 20140355322
    Abstract: A stacked switched capacitor (SSC) energy buffer circuit includes a switching network and a plurality of energy storage capacitors. The switching network need operate at only a relatively low switching frequency and can take advantage of soft charging of the energy storage capacitors to reduce loss. Thus, efficiency of the SSC energy buffer circuit can be extremely high compared with the efficiency of other energy buffer circuits. Since circuits utilizing the SSC energy buffer architecture need not utilize electrolytic capacitors, circuits utilizing the SSC energy buffer architecture overcome limitations of energy buffers utilizing electrolytic capacitors. Circuits utilizing the SSC energy buffer architecture (without electrolytic capacitors) can achieve an effective energy density characteristic comparable to energy buffers utilizing electrolytic capacitors.
    Type: Application
    Filed: January 17, 2013
    Publication date: December 4, 2014
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: David J. Perreault, Khurram K. Afridi, Minjie Chen, Steven B. Leeb, Arthur Hsu Chen Chang
  • Patent number: 8868246
    Abstract: Several embodiments provide wireless irrigation control and related methods. In one implementation, an irrigation control system includes a transmitter unit including a controller and a connector to be coupled to an irrigation controller having station actuation output connectors. The controller is can receive an indication that the irrigation controller has activated an irrigation station, and can cause the transmitter unit to transmit a wireless activation signal responsive to the indication. A receiver unit is coupled to an actuator coupled to an actuatable device, such as an irrigation valve, the actuator configured to actuate the irrigation valve to control the flow of water therethrough. The receiver unit receives the wireless activation signal and in response, causes the actuator to actuate the actuatable device. In some implementations, the receiver unit includes a capacitor charging circuit and battery to power the receiver unit and drive and control a latching solenoid.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: October 21, 2014
    Assignee: Rain Bird Corporation
    Inventors: Dean C. Thornton, Randall A. Hern, Malcolm N. Napier
  • Patent number: 8861233
    Abstract: A method and apparatus for regulating a dc-dc converter wherein a plurality of switches are arranged with respect to an energy storage device and an output capacitor. An impedance of one or more of the plurality of switches may be adjusted by altering a non-zero voltage provided to the one or more of the plurality of switches, the altering may be based on a slope control signal output by a multiplexer that receives a signal representing a conductance value of the one or more of the plurality of switches.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: October 14, 2014
    Assignee: Infineon Technologies AG
    Inventors: Stefano Marsili, Werner Hoellinger, Gerhard Maderbacher
  • Patent number: 8861234
    Abstract: A DC voltage source converter for use in high voltage DC power transmission comprising at least one chain-link converter connected between first and second DC terminals. The or each chain-link converter includes a chain of modules connected in series and each module including at least one pair of semiconductor switches connected in parallel with an energy storage device. The or each chain-link converter is operable when DC networks are connected to the first and second DC terminals to control switching of the modules to selectively charge or discharge the energy storage device of one or more of the modules, as required, to offset any difference in the DC voltage levels of the DC networks.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: October 14, 2014
    Assignee: Alstom Technology Ltd
    Inventors: David Trainer, Colin Davidson, Ruchira Withanage, Adrian Keitley, Robert Whitehouse
  • Patent number: 8860256
    Abstract: A domestic appliance having a control device to control device components of the domestic appliance during execution of a program, wherein the device components have electrical loads. The domestic appliance also has a switch to at least partly de-energize the control device after the program has finished executing.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: October 14, 2014
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventor: Michael Georg Rosenbauer
  • Patent number: 8854847
    Abstract: A power management device comprises: an input for receiving a transient energy pulse; a first storage section and a second storage section for storing energy from the input; an output; a switching section for selectively connecting the input, first storage section, second storage section and output in at least first and second configurations, wherein in the first configuration the first and second storage sections are connected so as to distribute energy from the transient energy pulse between the first and second storage sections, in the second configuration the respective voltages across the first and second storage sections are combined additively to produce an output voltage at the output, whereby the output voltage after switching to the second configuration is greater than the output voltage before switching to the second configuration.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: October 7, 2014
    Assignee: NXP, B.V.
    Inventor: Timothy Luke Farnsworth
  • Publication number: 20140234140
    Abstract: Electronic dispensers and refill units for electronic dispensers are disclosed herein. An exemplary electronic dispenser includes a housing, a processor and a first battery secured to the dispenser. The first battery provides power to the processor. The dispenser further includes actuator drive circuitry for causing the dispenser to move an actuator to dispense fluid from a refill unit. In addition, the dispenser includes a rechargeable energy storage device for providing power to the actuator drive circuitry. Circuitry for charging the rechargeable energy storage device is also provided. The dispenser includes a holder for holding a refill unit and a connector for releasably connecting to a second battery that is provided with the refill unit. The second battery is installed in the connector when a refill unit is installed in the dispenser and removed from the connector when the refill unit is removed from the dispenser.
    Type: Application
    Filed: February 19, 2013
    Publication date: August 21, 2014
    Applicant: GOJO Industries, Inc.
    Inventors: Chip W. Curtis, Jackson W. Wegelin
  • Patent number: 8797770
    Abstract: A capacitive voltage converter comprising a switched capacitor array having a voltage input and a voltage output. A skip gating control coupled to the switched capacitor array and configured to control a switching activity of the switched capacitor array. A resistance look-up table coupled to the switched capacitor array and configured to control a resistance value of the switched capacitor array.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: August 5, 2014
    Assignee: Conexant Systems, Inc.
    Inventors: Matteo Conta, Lorenzo Crespi
  • Patent number: 8754549
    Abstract: In a power conversion device which performs DC/DC conversion, an inverter circuit (20), which is formed of one or more single-phase inverters (20a) and (20b) connected in series to each other, is connected in series to a DC power supply (1) in its subsequent stage. In further subsequent stage, a smoothing capacitor (6) connected to the inverter circuit (20) via a rectifier diode (5), and a shorting switch (4) which bypasses the smoothing capacitor (6) are provided. The shorting switch (4) is switched ON to charge capacitors (25) and (35) included in the single-phase inverter (20a) and (20b), respectively, whereas the shorting switch (4) is switched OFF to discharge the capacitors (25) and (35), whereby the voltage of the smoothing capacitor (6) is controlled.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: June 17, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tomoyuki Kawakami, Akihiko Iwata, Tatsuya Okuda
  • Patent number: 8736247
    Abstract: A power supply circuit is provided which includes a first booster to boost a power supply voltage supplied from a battery and generate a first boosted voltage, a second booster to boost the power supply voltage at a higher multiplication factor than the first booster and generate a second boosted voltage, a power supply selection circuit to output the first boosted voltage or the second boosted voltage, a first smoothing capacitor placed at an output end of the power supply selection circuit, and a second smoothing capacitor placed at an output end of the second booster.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: May 27, 2014
    Assignee: Renesas Electronics Corporation
    Inventor: Haruhiko Hisano
  • Patent number: 8723485
    Abstract: A power supply system includes an output node, an internal power supply unit, a boost storage unit, a charging path unit, and a discharging path unit. The output node is coupled to a load device. The internal power supply unit includes a gold capacitor unit for storing an internal storage voltage. The charging path unit is turned on in a charging period to store a boost supply voltage in the boost storage unit. The discharging path is turned on in a discharging period to provide a power signal for drive the load device according to the internal storage voltage and the boost supply voltage. The charging and discharging periods are non-overlapping.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: May 13, 2014
    Assignee: Quanta Computer Inc.
    Inventor: Chien-Hung Liu
  • Patent number: 8698347
    Abstract: In order to discharge electrical charges from a smoothing capacitor even if no discharge command is issued by a control system, making use of the displacement of a power unit in the event of a collision, a movable electrode is connected to a first contact connected to a high-potential bus, and the smoothing capacitor is connected with a converter and an inverter to be in parallel in the case where an engagement rod is positioned by a retaining ring. Further, when the engagement rod is disengaged from the retaining ring and removed from a relay, the movable electrode is held in contact with a second contact by a pressure spring, and the electrical charge remaining in the smoothing capacitor is discharged to a low-potential bus through a discharge portion.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: April 15, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hirosato Ishigaki
  • Patent number: 8699249
    Abstract: A novel design scheme for the compensation circuitry of solid-state Marx modulators has been described for enhancing the compensation ability of the compensation cells of solid-state Marx modulators and simplifying the entire circuitry of the modulator. High-speed solid-state switches are adopted in the new compensation cell for the control of the compensation actions. Inductive components and diodes are adopted in the design scheme to smooth the flattop of the voltage pulse output by the Marx modulator.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: April 15, 2014
    Assignee: DULY Research Inc.
    Inventor: Ping Chen
  • Publication number: 20140097785
    Abstract: A method and system are disclosed for controlling electrical current through an inductive load. The electrical current is supplied by one of at least three selectable dual capacitor bank electrical circuits. The method includes storing electrical energy during a charge operating state in first and second capacitor banks of a first dual capacitor bank circuit. The stored electrical energy is then used to drive the inductive load when operating the first dual capacitor bank circuit in a drive operating state. After depleting the stored electrical energy from the first and second capacitor banks, the first dual capacitor bank transitions to a collection operating state that includes collecting electrical energy from the inductive load. A second and third dual capacitor circuits simultaneously transition among the charge operating state, the drive operating state, and the collection operating state during operation.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 10, 2014
    Inventor: MARC HENNESS
  • Patent number: 8644040
    Abstract: Exemplary embodiments of a power supply can be provided. The exemplary power supply can include a voltage source which supplies a supply voltage; and a charge pump circuit supplied by the voltage source and configured to generate an output voltage at an output. The charge pump can include alternating first and second clock states. In the first clock state, a first charge pump capacitor can be disposed between the supply voltage and ground and can be charged to the supply voltage by the voltage source, and a second charge pump capacitor can be coupled in series between the voltage source and the output. In the second clock state, the first charge pump capacitor and the second charge pump capacitor can be connected in series such that the charged connection of the first charge pump capacitor the first clock state can be grounded and the second charge pump capacitor can be charged by the voltage source.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: February 4, 2014
    Assignee: Flextronics International Kft.
    Inventor: Georgios Petridis