To Derive A Voltage Reference (e.g., Band Gap Regulator) Patents (Class 323/313)
  • Patent number: 11022991
    Abstract: An electrical device includes a power supply circuit configured to provide a first voltage and a second voltage, and a first verification circuit configured to derive a first and a second internal voltage from the first voltage, to compare the first and second internal voltages, and to generate a first output signal based on the comparison. The electrical device includes a second verification circuit including a first input terminal for the first voltage and a second input terminal for the second voltage, and configured to compare the first and second voltages and to generate a second output signal based on the comparison. Furthermore, the electrical device includes a combination circuit configured to generate a third output signal if the first output signal or the second output signal is indicative of the first voltage or the second voltage being outside a tolerance range.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: June 1, 2021
    Inventors: Mario Motz, Umberto Aracri, Alessandro Michelutti
  • Patent number: 10990119
    Abstract: A reference voltage generation circuit of the invention includes: PMOS transistors P1 and P2 configured to provide current sources with same current to a first current path and a second current path; a bipolar transistor Q1 connected to the PMOS transistors P1 on the first current path; a bipolar transistor Q2 connected to the PMOS transistors P2 on the second current path; a differential amplifier AMP controlling the gates of the PMOS transistors P1 and P2, such that a voltage of a node VN and a voltage of a node VP are equal; an output node BGR outputting a reference voltage Vref; and a reference voltage guarantee portion 130 outputting a detecting signal BGRDET when a differences between the voltage of the node VN and the voltage of the node VP is maintained below a determined value.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: April 27, 2021
    Assignee: Winbond Electronics Corp.
    Inventor: Hiroki Murakami
  • Patent number: 10985653
    Abstract: An apparatus includes a first switching device and a second switching device connected in series between a first node and a second node, a first voltage blocking device and a second voltage blocking device connected in series between the first node and a third node, a flying capacitor connected between a common node of the first switching device and the second switching device, and a common node of the first voltage blocking device and the second voltage blocking device, and a controller configured to adjust power losses in the first switching device and the second switching device through controlling charge and discharge processes of the flying capacitor.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: April 20, 2021
    Assignee: Infineon Technologies AG
    Inventor: Yifeng Cai
  • Patent number: 10983547
    Abstract: The present disclosure provides bandgap reference circuits having multi-level chopping actions to current mirror circuits for the purpose of reducing the flicker noise of the output reference voltage. A bandgap reference circuit includes a first current mirror including a pair of a first MOSFET and a second MOSFET, a second current mirror comprising a third MOSFET electrically connected to the first current mirror, and configured to provide a reference voltage at a drain, a first bipolar junction transistor electrically connected to the first current mirror, a second bipolar junction transistor connected to the first current mirror via a first resistor, a third bipolar junction transistor connected to the third MOSFET via a second resistor. The bandgap reference circuit further includes an operational amplifier to control the MOSFETs and a plurality of chopping switches configured to perform chopping actions on outputs of the first current mirror and the second current mirror.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: April 20, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Evgueni Ivanov
  • Patent number: 10969814
    Abstract: An integrated circuit is provided with a bandgap voltage reference circuit having a bandgap reference voltage output. A bandgap failure detection circuit is coupled to the bandgap reference voltage output. The bandgap failure detection forms a model value of the reference voltage from a first time, compares a present value of the reference voltage at a second time to the model value; and asserts a bandgap fail signal to indicate when the present value is less than the model value by a threshold value. The integrated circuit is reset by the bandgap fail signal. The detection circuit may be operated from a failsafe voltage domain that also allows a critical circuit to complete a pending operation during a reset.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: April 6, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Frank Dornseifer, Matthias Arnold, Johannes Gerber
  • Patent number: 10963000
    Abstract: A bandgap reference circuit and a method for providing a reference voltage are disclosed. In an embodiment a bandgap reference circuit includes a voltage generator including a first branch and a second branch and being configured to produce a reference voltage with a temperature coefficient lower than a given threshold, a supply circuit configured to provide a first current to the first branch and a second current to the second branch, and a control loop including a transconductance amplifier configured to provide an output signal representative of a difference between a first voltage of the first branch and a second voltage of the second branch and a filter coupled to an output of the transconductance amplifier, the filter configured to provide an output signal for controlling the first current and second current of the supply circuit.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: March 30, 2021
    Assignee: TDK CORPORATION
    Inventors: Lei Zou, Gino Rocca
  • Patent number: 10924112
    Abstract: A bandgap reference circuit is applied to the wide range supply voltage. When a power supply voltage is changed, the change amount of the bandgap voltage generated by the bandgap reference circuit is very low. The bandgap reference circuit includes a mirroring circuit, an input circuit and an operation amplifier. The mirroring circuit generates a first current, a second current and a third current to a first node, a second node and an output voltage of the bandgap reference circuit. The input circuit is connected with the first node to receive the first current and connected with the second node to receive the second current. A positive input terminal of the operation amplifier is connected with the first node. A negative input terminal of the operation amplifier is connected with the second node. An output terminal of the operation amplifier is connected with the mirroring circuit.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: February 16, 2021
    Assignee: EMEMORY TECHNOLOGY INC.
    Inventor: Chia-Fu Chang
  • Patent number: 10924126
    Abstract: An electronic device comprises a regulator, and an oscillator and a resistor coupled to the regulator. The electronic device further comprises a feedback controller that includes a differential amplifier coupled between the oscillator, the resistor, and the regulator. The feedback controller is configured to apply a control voltage to the regulator in response to a resistor voltage upon the resistor and an oscillator voltage upon the oscillator. The feedback controller can be coupled to control a substantially equal voltage upon the resistor and the oscillator.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: February 16, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Per Torstein Røine, Danielle Lyn Griffith
  • Patent number: 10924015
    Abstract: Methods, systems, and apparatus to facilitate current sensing for valley current-controlled power converters are disclosed. An example apparatus includes a comparator including a first terminal, a second terminal, and an output. The apparatus further includes a first transistor including a first drain coupled to the first terminal of the comparator. The apparatus further includes a second transistor including a second drain coupled to the first terminal of the comparator. The apparatus further includes a third transistor including a third drain coupled to the second terminal of the comparator.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: February 16, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Joerg Kirchner, Stefan Dietrich, Ivan Shumkov, Christian Harder
  • Patent number: 10890935
    Abstract: A low voltage bandgap reference circuit (200) is provided which includes a first current generator (202) having first and second circuit branches which include, respectively, first and second bipolar transistors having different sizing reference values for generating a first current at a first resistor that varies proportionally as a function of temperature; a second current generator (204, 205) having a third circuit branch which includes one or more field effect transistors and no bipolar transistors for generating a second current that varies inversely as a function of temperature; and a third circuit (206) connected to generate a bandgap reference current in response to the first current and the second current.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: January 12, 2021
    Assignee: NXP USA, Inc.
    Inventors: Guillaume Mouret, Yann Cargouet, Thierry Sicard
  • Patent number: 10884442
    Abstract: The present disclosure discloses a bandgap reference power generation circuit and an integrated circuit. The bandgap reference power generation circuit includes a bias circuit and a bandgap reference core circuit. The bias circuit is configured to provide starting current according to a bias voltage. The bandgap reference core circuit is connected to the bias circuit to receive the starting current and goes into a stable operating state according to the starting current to output a preset voltage or preset current. The integrated circuit includes the bandgap reference power generation circuit. By the aforementioned method, the present disclosure can simplify a circuit design and reduce power consumption.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: January 5, 2021
    Assignee: AUTOCHIPS INC.
    Inventor: Ke Wang
  • Patent number: 10862535
    Abstract: A system for coupling a modulated voltage signal onto a current loop between a host device and a field device, in various embodiments, can include a circuit and an impedance bridge. The circuit is configured to flow current from the field device between two terminals of an input circuit in the host device, wherein the two terminals are included in the current loop. The impedance bridge is positioned between the two terminals and configured to modulate impedance to convert the current in a field loop produced by the field device into terminal voltage modulation, without introducing a DC voltage burden to the current.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: December 8, 2020
    Assignee: General Electric Company
    Inventors: Bruce Henderson, Alan Carroll Lovell
  • Patent number: 10838448
    Abstract: A bandgap reference generation circuit in an integrated circuit (IC) and method for generating a bandgap reference voltage are disclosed. The bandgap reference generation circuit includes a first proportional to absolute temperature (PTAT) current generation section for generating a PTAT current component, a current circuit configured to generate a trimmed PTAT current component substantially invariant of sheet resistance of at least one resistor in the current circuit, and a complementary to absolute temperature (CTAT) current generation section including a diode on which the trimmed PTAT current component is fed to generate a CTAT current component. A combination of the PTAT and CTAT current components generate the bandgap reference voltage.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: November 17, 2020
    Assignee: SanDisk Technologies LLC
    Inventors: Sridhar Yadala, Sivakumar Grandhi, Nittala Venkata Satya Somanadh Kumar
  • Patent number: 10833653
    Abstract: Aspects of the invention include a circuit including a power circuit having an amplifier, a resistor, a current source, and a first node, one end of the resistor being configured to couple to a power supply, the first node being coupled to an opposite end of the resistor, a first input terminal of the amplifier, and the current source. A voltage sensitive circuit includes a logic gate coupled to both a second input terminal of the amplifier and an output terminal of the amplifier at a second node.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: November 10, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael Sperling, Akil Khamisi Sutton, Pawel Owczarczyk, Erik English
  • Patent number: 10831227
    Abstract: Disclosed is a reference voltage circuit with low temperature drift, including a first voltage unit, a second voltage unit and a K times' amplification unit. The first voltage unit is configured to generate a first voltage, with a first end thereof being grounded. The K times' amplification unit is configured to amplify the first voltage by K times, with a first end thereof being connected to a second end of the first voltage unit, and with a second end thereof being connected to a first end of the second voltage unit, wherein K is a constant greater than zero. The second voltage unit is configured to generate a second voltage, with the first end thereof being connected to a current source circuit, and a second end thereof being connected to a third end of the first voltage unit to serve as an output end of a reference voltage (VREF).
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: November 10, 2020
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Yuming Feng, Liang Zhang, Xinchao Peng, Yijun Xu, Jianxun Li, Yuhua Xie, Shirong Fan, Jia Zhou, Wenjie Yang
  • Patent number: 10831228
    Abstract: An apparatus and method for a voltage reference circuit with flexible and adjustable voltage settings. A voltage reference circuit, comprising a PTAT Current Generator configured to provide current through a first resistor, a CTAT Current Generator configured to provide a CTAT current through a second resistor, a PTAT-CTAT Adder circuit configured to sum the PTAT current, and the CTAT current, wherein said sum of the PTAT and CTAT current through a third resistor is configured to provide an output voltage greater than a silicon bandgap voltage.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: November 10, 2020
    Assignee: Apple Inc.
    Inventors: Turev Acar, Selcuk Talay, Burak Dundar
  • Patent number: 10819288
    Abstract: Various methods and circuital arrangements for biasing one or more gates of stacked transistors of an amplifier are possible where the amplifier is configured to operate in at least an active mode and a standby mode. Circuital arrangements can reduce bias circuit standby current during operation in the standby mode while allowing a quick recovery to normal operating conditions of the amplifier. Biasing an input transistor of the stacked transistors can be obtained by using a replica stack circuit.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: October 27, 2020
    Assignee: pSemi Corporation
    Inventors: Poojan Wagh, Kashish Pal
  • Patent number: 10803911
    Abstract: A current sense amplifier includes: first and second intermediate nodes coupled to first and second nodes of a sense resistor by a chopper, and to respective branches of a current mirror; a differential amplifier having inputs coupled to the first and second intermediate nodes and adapted to generate first and second voltage signals; and first and second transistors adapted to be controlled by the first and second voltage signals respectively and each having one of its main current conducting nodes coupled to a respective one of the first and second intermediate nodes.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: October 13, 2020
    Assignee: STMICROELECTRONICS (ALPS) SAS
    Inventor: Patrik Arno
  • Patent number: 10795395
    Abstract: A bandgap voltage reference circuit includes an amplifier, a voltage buffer, a first transistor, a first resistor, a second transistor, a second resistor, and a leakage current. The input terminals of the amplifier are coupled to a first reference node and a second reference node respectively. The voltage buffer is coupled to the output terminal of the amplifier for outputting a bandgap reference voltage. The first transistor is coupled to the first reference node, the second first resistor, and can receive the bandgap reference voltage. The second resistor is coupled to the first resistor and a system voltage terminal. The second transistor is coupled to the second reference node, the first resistor, and can receive the bandgap reference voltage. The leakage current compensation element is coupled to the second transistor and the system voltage terminal. A size of the first transistor is greater than the second transistor.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: October 6, 2020
    Assignee: eMemory Technology Inc.
    Inventor: Chih-Chun Chen
  • Patent number: 10790037
    Abstract: Provided is a circuit for generating a bias current, which includes a current generation unit including a plurality of current mirrors that generate a plurality of currents having different levels. The circuit also includes a current generation control unit that controls the generating the plurality of current having different levels in the current generation unit based on an externally input current. The circuit further includes a current supplying unit that supplies a current selected from the plurality of currents having different levels to an external device.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: September 29, 2020
    Assignee: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventor: Duk Ju Jeong
  • Patent number: 10788851
    Abstract: An apparatus, a method, and an integrated circuit for a providing a temperature-compensated Zener reference are disclosed. In accordance with at least one embodiment, the apparatus comprises a proportional-to-absolute-temperature (PTAT) current source; a complementary-to-absolute-temperature (CTAT) current source; and a Zener diode, with the PTAT current source coupled to a first Zener diode terminal of the Zener diode, the CTAT current source coupled to the first Zener diode terminal of the Zener diode, and the PTAT current source providing a PTAT current and the CTAT current source providing a CTAT current, wherein the PTAT current and the CTAT current are combined for provide a temperature-compensated bias current.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: September 29, 2020
    Assignee: NXP USA, Inc.
    Inventors: Simon Brule, Yuan Gao, Olivier Tico
  • Patent number: 10790806
    Abstract: In one example, a power-on reset (POR) circuit comprises a first transistor coupled to a voltage source, a control terminal of the first transistor coupled to a non-control terminal of the first transistor via a resistor; a second transistor coupled to the resistor, a control terminal of the second transistor is coupled to a non-control terminal of the second transistor; and a comparator having first and second terminals, the first terminal coupled to the non-control terminal of the first transistor and the second terminal coupled to the voltage source via an offset circuit.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: September 29, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Avinash Shreepathi Bhat
  • Patent number: 10782717
    Abstract: A jitter compensation circuit operates in a first conduction state responsive to a high-to low transition of data and a low-to-high transition of data. The circuit operates in a second conduction state when there is no transition of data. The circuit compensates charge to a voltage supply in the first conduction state, thereby reducing voltage drop caused by transition of data.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: September 22, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jikai Chen, Yonghui Tang, Yuan Rao, Huanzhang Huang, Yanli Fan
  • Patent number: 10775828
    Abstract: A reference voltage generation circuit for generating an output voltage is provided. The reference voltage generation circuit includes a bandgap reference circuit and a voltage adjustment circuit. The bandgap reference circuit generates the output voltage at an output node and a reference voltage. The voltage adjustment circuit is coupled to the bandgap reference circuit. The voltage adjustment circuit receives the output voltage and the reference voltage, compares the output voltage with the reference voltage to generate a comparison result, and adjusts the output voltage according to the comparison result.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: September 15, 2020
    Assignee: SHANGHAI ZHAOXIN SEMICONDUCTOR CO., LTD.
    Inventor: Yeong-Sheng Lee
  • Patent number: 10741141
    Abstract: A method of arranging components in an integrated circuit includes providing two or more circuit cells of a first type and providing two or more circuit cells of a second type. The circuit cells of the first type are configured to operate in conjunction with the circuit cells of the second type. The method further includes arranging the circuit cells of the first and second types in an alternating pattern such that each circuit cell of the first type is adjacent to at least one circuit cell of the second type. The alternating pattern may be an array of rows and columns and may include a repeating pattern of one first type cell and one second type cell in each of the columns. The alternating pattern may include a repeating pattern of one cell of the first type and two cells of the second type in each of the columns.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: August 11, 2020
    Assignee: Kopin Corporation
    Inventors: Yong Seok Seo, Jin Kuk Kim, Seung Youb Kim
  • Patent number: 10732662
    Abstract: A band-gap reference circuit including a charge pump circuit and a reference circuit is disclosed. The charge pump circuit is powered by a supply voltage and thereby outputs a regulating voltage which is higher than the supply voltage and powers the reference circuit such that the reference circuit outputs a band-gap reference voltage. Powering the reference circuit with the regulating voltage that is made higher than the supply voltage by the charge pump circuit enables 1) normal operation of the band-gap reference circuit at the supply voltage that is lower than a lowest voltage required by the band-gap reference circuit; and 2) minimization (almost elimination) of fluctuations in the regulating voltage output from the charge pump circuit and hence a stable and more accurate band-gap reference voltage output from the band-gap reference circuit.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: August 4, 2020
    Assignee: WUHAN XINXIN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventor: Yuan Tang
  • Patent number: 10732661
    Abstract: Aspects of the subject technology relate to a circuit for reducing random-telegraph noise in bandgap circuits. The circuit includes a number of diodes coupled in parallel at their respective first nodes to a ground potential. A number of switches are coupled to respective second nodes of the diodes. The circuit further includes a first resistor and a resistor voltage divider. The first node of the first resistor is coupled to a first node of a current source, and the first node of the resistor voltage divider is coupled to the first node of the current source. The switches are used to implement cyclic switching of the diodes in response to a train of pulses. An output voltage of the circuit is derived between a mid-node of the resistor voltage divider and a second node of the first resistor.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: August 4, 2020
    Assignee: Apple Inc.
    Inventors: Gregory B. Arndt, Salvatore Reddiconto
  • Patent number: 10725491
    Abstract: Methods, systems, and apparatus to correct gate bias for a diode-connected transistor are disclosed. An example apparatus includes a first resistor including a first resistor terminal and a second resistor terminal; a second resistor including a first resistor terminal and a second resistor terminal; a first transistor including a current terminal and a gate terminal, the current terminal of the first transistor coupled to the first resistor terminal of the first resistor and the gate terminal of the first transistor is coupled to the second resistor terminal of the first resistor; and a second transistor including a first current terminal and a second current terminal, the first current terminal of the second transistor coupled to the gate terminal of the first transistor, and the second current terminal of the second transistor coupled the first current terminal of the second resistor.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: July 28, 2020
    Assignee: Texas Instruments Incorporated
    Inventor: Gregory Wallis Collins
  • Patent number: 10719094
    Abstract: An internal voltage generation circuit includes a counting operation control signal generation circuit and a drive control signal generation circuit. The counting operation control signal generation circuit compares a test internal voltage with a test reference voltage to generate a counting operation control signal in a test mode. The drive control signal generation circuit generates a drive adjustment signal whose logic level combination is adjusted according to the counting operation control signal in the test mode. In addition, the drive control signal generation circuit compares the test internal voltage with the test reference voltage in the test mode to generate a drive control signal for driving the test internal voltage.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: July 21, 2020
    Assignee: SK hynix Inc.
    Inventor: Se Hwan Kim
  • Patent number: 10712875
    Abstract: Described is an apparatus of a thermal sensor and/or bandgap reference circuit which is independent of an operational amplifier. The apparatus comprises: a forward biased diode circuit having one or more diodes; a first switch-capacitor sampler coupled to the forward biased diode circuit, the first switch-capacitor sampler to provide a reference voltage which is proportional to absolute temperature; and a second switch-capacitor sampler coupled to the forward biased diode circuit.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: July 14, 2020
    Assignee: INTEL CORPORATION
    Inventor: Sharon Malevsky
  • Patent number: 10712763
    Abstract: The present application relates to a sub-bandgap reference source circuit, which comprises a current mirror source, a first branch comprising a first BJT and a second branch comprising a second BJT, the first BJT having an emitter current density lower than an emitter current density of the second BJT, the first branch and the second branch being connected at a first node coupled to ground; a first voltage divider comprising first and second resistances coupled in series, the first resistance being coupled between a base terminal of the first BJT and a second node, the second resistor being coupled to ground; a second voltage divider comprising first and second resistances coupled in series, the first resistance being coupled between the second node and a base terminal of the second BJT, the second resistance being coupled to the first node; and an output terminal coupled to the second node.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: July 14, 2020
    Assignee: NXP USA, Inc.
    Inventors: Guillaume Mouret, Thierry Michel Alain Sicard, John Pigott
  • Patent number: 10707870
    Abstract: An object of the present invention is to reduce a chip area of the high-side driver circuit. A high-side driver circuit of the present invention is a high-side driver circuit in which a first potential is set as a power supply potential, which includes a constant voltage circuit configured to operate with a second potential as a reference potential, and generate, from the first potential, a third potential which is lower than the first potential and higher than the second potential, a logic circuit configured to operate with the third potential as a reference potential, a level shift circuit configured to shift the reference potential of the output signal of the logic circuit from the third potential to the second potential, and a driver circuit in which the second potential is set as a reference potential, and configured to drive a switching element by the output signal.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: July 7, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuya Hokazono, Dong Wang, Jun Fukudome
  • Patent number: 10706788
    Abstract: The present disclosure relates to a compensation method and a compensation apparatus for an OLED pixel and a display apparatus, which relates to the field of display technology. The compensation method for an OLED pixel includes: acquiring a threshold voltage of a driving transistor; acquiring a mobility of the driving transistor according to the threshold voltage of the driving transistor; and compensating the OLED pixel according to the mobility of the driving transistor.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: July 7, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yi Chen, Min He
  • Patent number: 10705553
    Abstract: A constant current circuit includes a first current mirror circuit connected to a first power supply and having a first input transistor and a first output transistor of a first conductivity type, a second current mirror circuit having a second output transistor of a second conductivity type provided between the first input transistor and a second power supply, and a second input transistor of the second conductivity type provided between the first output transistor and the second power supply, a resistor interposed between the second output transistor and the second power supply, and a capacitor having one end connected to the first power supply and the other end connected to a connecting point of the second output transistor and the resistor.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: July 7, 2020
    Assignee: Ablic Inc.
    Inventor: Kaoru Sakaguchi
  • Patent number: 10700644
    Abstract: Briefly, embodiments of claimed subject matter relate to determination of a high-impedance state or a low-impedance state of a resistive memory element over a wide range of temperature, such as temperatures approaching ?40.0° C. to temperatures approaching +125.0° C. Such determination may be brought about by implementing a circuit which, according to various embodiments described herein, emulates a reference impedance having a negative temperature coefficient.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: June 30, 2020
    Assignee: Arm Limited
    Inventor: El Mehdi Boujamaa
  • Patent number: 10684637
    Abstract: a reference voltage generating circuit that includes a bandgap reference voltage generating circuit main body (10) configured to generate a substantially constant reference voltage at room temperature, a high temperature correction circuit (30) configured to increase a reference voltage generated by the reference voltage generating circuit main body at a high temperature by supplying a high temperature correction current that increases as the temperature increases to the resistor, a low temperature correction circuit (40) configured to increase a reference voltage generated by the reference voltage generating circuit main body at a low temperature by supplying a low temperature correction current that increases as the temperature decreases to the resistor, and a bias circuit (20) configured to generate a bias voltage according to the temperature, so as to control the high temperature correction current and the low temperature correction current at the same time.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: June 16, 2020
    Assignee: NEW JAPAN RADIO CO., LTD.
    Inventor: Haruhiko Yoshida
  • Patent number: 10680517
    Abstract: A reconfigurable voltage regulator for use in a system having a multiple power domains includes a power detecting circuit and a charge pump. The power detecting circuit is coupled to a power supply and configured to partition a power range of the power supply into multiple voltages zones corresponding to the multiple power domains of the system and provide a pump enable signal associated with a specific power domain among the multiple power domains. The charge pump includes multiple pump stages arranged in a matrix, wherein each pump stage is activated or deactivated according to a corresponding bit of the pump enable signal.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: June 9, 2020
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventor: Liang Qiao
  • Patent number: 10678284
    Abstract: Apparatuses and methods for providing a current independent of temperature are described. An example apparatus includes a current generator that includes two components that are configured to respond equally and opposite to changes in temperature. The responses of the two components may allow a current provided by the current generator to remain independent of temperature. One of the two components in the current generator may mirror a component included in a voltage source that is configured to provide a voltage to the current generator.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: June 9, 2020
    Assignee: Micron Technology, Inc.
    Inventor: Wei Lu Chu
  • Patent number: 10671104
    Abstract: Signal-generation circuitry comprises: a differential amplifier comprising first and second input transistors, connected along respective current paths and having control terminals serving as corresponding first and second input terminals of the differential amplifier, and an output terminal at which an amplified signal is output dependent on input signals received at the input terminals; bandgap voltage reference circuitry comprising the first input transistor and a third input transistor whose control terminals are connected together to form a reference terminal at which a bandgap voltage reference signal is generated as a first input signal; and a regulation stage connected to receive the amplified signal output from the differential amplifier and configured to generate a voltage-regulated signal based thereon, and connected to the second input terminal of the differential amplifier so that the second input signal is a feedback signal dependent on the voltage-regulated signal.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: June 2, 2020
    Assignee: SOCIONEXT INC.
    Inventor: David Hany Gaied Mikhael
  • Patent number: 10671108
    Abstract: A bandgap reference circuit and method of using the same are provided. The bandgap reference circuit includes a startup component; an output component; and a bandgap core component coupled there-between. The bandgap core component includes a reference point having a voltage associated with an output signal of the output component. A controller is configured for controlling the bandgap core component and the output component to switch between a low power consumption mode and a normal operation mode based on the voltage at the reference point. When the bandgap core component and the output component operate in the normal operation mode, the bandgap reference circuit outputs a stable voltage and has a first power consumption. When the bandgap core component and the output component operate in the low power consumption mode, the bandgap reference circuit has a second power consumption less than the first power consumption.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: June 2, 2020
    Assignees: Semiconductor Manufacturing International (Shanghai) Corporation, Semiconductor Manufacturing International (Beijing) Corporation
    Inventors: Josh Yang, Zhi Bing Deng, Cheng Tai Huang, Cheng Yi Huang, Wen Jun Weng, Jun Tao Guo
  • Patent number: 10648870
    Abstract: Disclosed is a temperature sensor including a first current generator configured to generate a proportional to absolute temperature (PTAT) current, a second current generator configured to generate an inverse PTAT (IPTAT) current, the PTAT current and IPTAT current being combined to form a reference current having a sensitivity relative to temperature, a plurality of current mirrors to adjust the sensitivity and gain of the reference current, and a variable resistor to set an output calibration voltage based on the generated current.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: May 12, 2020
    Assignee: NXP USA, Inc.
    Inventors: Birama Goumballa, Didier Salle, Olivier Doare, Cristian Pavao Moreira
  • Patent number: 10637414
    Abstract: Described herein is an apparatus and system of a low-impedance reference voltage generator. The apparatus comprises: a voltage-control loop including a first transistor to provide an output voltage; and a current-control loop to sense current through the first transistor, relative to a reference current. The node having the output voltage is a low-impedance node.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: April 28, 2020
    Assignee: Intel Corporation
    Inventor: Richard Y. Tseng
  • Patent number: 10622888
    Abstract: A negative voltage circuit includes a first charge pump circuit and a second charge pump circuit. The first charge pump circuit is configured to operate in a start-up mode and perform a first charge pumping operation based on a first current to generate a negative voltage. The second charge pump circuit is configured to operate in a normal operating mode subsequent to the start-up mode and perform a second charge pumping operation based on a second current to generate a negative voltage, The first current is higher than the second current, and a speed of the first charge pumping operation is higher than a speed of the second charge pumping operation.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: April 14, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Paek, Byeong Hak Jo
  • Patent number: 10620075
    Abstract: Certain implementations of the disclosed technology may include systems, methods, and apparatus for assigning a distinct identifier (ID) to a pressure transducer based on resistor values. Embodiments include electrically identifying the distinct ID, and compensating the pressure transducer based on the distinct ID. According to an example implementation, a method is provided that can include coupling a transducer ID measurement assembly with a transducer assembly; measuring, by the transducer ID measurement assembly, a plurality of divided voltages between a plurality of configurable ID switches and a reference resistor; determining, with a processor, a distinct ID associated with the transducer assembly based on the plurality of measured divided voltages; retrieving one or more compensation parameters based on the distinct ID; and compensating, with the one or more compensation parameters, a measurement signal of the transducer assembly.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: April 14, 2020
    Assignee: Kulite Semiconductor Products, Inc.
    Inventor: Wolf Landmann
  • Patent number: 10613570
    Abstract: A bandgap circuit generates a process and temperature independent voltage. The bandgap circuit includes a bandgap core that generates a temperature independent voltage. The bandgap circuit also includes a resistor ladder that is coupled in parallel to the bandgap core and scales the temperature independent voltage into voltage levels proportional to the temperature independent voltage. An output switch of the bandgap circuit connects the output of the bandgap circuit to one of the voltage level that is substantially equal to a desired voltage level. The bandgap circuit may also include a current mirror that outputs a proportional to absolute temperature current.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: April 7, 2020
    Assignee: INPHI CORPORATION
    Inventors: Nicola Codega, Fabio Giunco, Giovanni Cesura
  • Patent number: 10585447
    Abstract: A voltage generator and a method for generating an output voltage is presented. The generator has a current mirror circuit with a first transistor having a gate and a first terminal, and a second transistor having a gate coupled to the gate of the first transistor, and with a first terminal coupled to a feedback node. A third transistor has a gate, a first terminal and a second terminal. The first terminal is coupled to the feedback node and the second terminal is coupled to an output node. A fourth transistor has a gate coupled to the third transistor. There is a current source coupled to the output node, and a feedback circuit to detect a terminal voltage at the feedback node and to control the terminal voltage by adjusting a gate voltage at the gate of the second transistor.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: March 10, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Susumu Tanimoto
  • Patent number: 10553381
    Abstract: The present disclosure discloses an electrical switchgear configured to control an electro-magnet by using the electro-magnet, a critical temperature device, and an electro-magnet control unit without using a bimetal and a mechanical contact. The electro-magnet switches power applied through a power line in response to a flow of control current to a power device connected to a load side. In a critical temperature device, an output current value varies when a temperature of a heating wire, which is connected to the power line, exceeds a critical temperature by supply current flowing to the power device. An electro-magnet control unit, which is realizable with an SCR, allows a flow of control current of the electro-magnet to be generated or cut off in response to the output current value of the critical temperature device.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: February 4, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyun-Tak Kim, Sungwoo Jo, Sun-Kyu Jung, Jin-cheol Cho
  • Patent number: 10551863
    Abstract: A voltage regulation circuit (2) comprises first (4) and second (6) voltage regulators each arranged to receive an input voltage (Vin) and a respective reference voltage; and first (18) and second (30) reference voltage sources arranged to provide the first and second reference voltages respectively. In a first mode of operation, the first regulator varies the regulated output voltage in response to a difference between the regulated output voltage (Vout) and the first reference voltage. In a second mode of operation, the second regulator varies the regulated output voltage in response to a difference between the regulated output voltage and the second reference voltage. The second voltage regulator is arranged to provide a greater maximum output current than the first voltage regulator. The circuit further comprises a switch portion (8) arranged to provide a third mode of operation in which the first regulator provides the regulated output voltage and the second regulator provides additional output current.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: February 4, 2020
    Assignee: Nordic Semiconductor ASA
    Inventor: Samuli Hallikainen
  • Patent number: 10551864
    Abstract: A bandgap voltage reference circuit configured to generate a bandgap reference voltage is provided. The bandgap voltage reference circuit includes a bandgap current generating circuit, a differential pair circuit and a flipped voltage follower. The bandgap current generating circuit converts the bandgap reference voltage into a bandgap current and generates a first voltage and a second voltage according to the bandgap current. The differential pair circuit is coupled to the bandgap current generating circuit to receive the first voltage and the second voltage and configured to reduce a voltage difference between the first voltage and the second voltage and generate a third voltage. The flipped voltage follower is coupled to the differential pair circuit to receive the third voltage and generates the bandgap reference voltage accordingly.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: February 4, 2020
    Assignee: RichWave Technology Corp.
    Inventors: Che-Sheng Chen, Shun-Nan Tai
  • Patent number: 10553916
    Abstract: An ambient heat engine that is thermally coupled to its environment is provided. The ambient heat engine includes two complementary electrochemical cells. One cell has a positive voltage temperature coefficient and the other cell has a negative voltage temperature coefficient. The ambient heat engine further includes a controller and an electrical energy storage device. When the ambient temperature increases or decreases, the temperature variation creates a voltage differential between the two cells, and the controller discharges the higher voltage cell and uses a portion of the discharged energy to charge the lower voltage cell. The difference in energy is extracted by the controller and supplied to the electrical energy storage device. The controller includes circuitry for coupling energy from the energy storage device to the cells in order to compensate for self-discharge of the cells which may occur due to electronic leakage and diffusion phenomenon over extended periods of time.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: February 4, 2020
    Assignee: Johnson IP Holding, LLC
    Inventor: Lonnie G. Johnson