With Capacitive Bootstrapping Patents (Class 327/390)
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Patent number: 12158490Abstract: A front-end device for monitoring operation of an associated electric power device with semiconductor power switches generating a power output, e.g. a three-phase power output. The front-end device has input terminals arranged for connection to the electric phase(s) of the power output of the associated electric power device, and an electric circuit connected to the input terminals and connected to at set of output terminals. The electric circuit has a passive interconnection comprising electric semiconductor switches and diodes. The electric circuit serves to electrically block any high voltage component from the input terminals from reaching the output terminals, while allowing an on-state voltage of at least one semiconductor power switch in the associated electric power device to pass to the at least two output terminals. The front-end allows low voltage equipment to be connected to its output terminals for determining an on-state voltage of switches of the electric power device.Type: GrantFiled: April 13, 2021Date of Patent: December 3, 2024Assignee: Aalborg UniversitetInventors: Huai Wang, Yingzhou Peng
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Patent number: 12047097Abstract: A system may include a switched-capacitor analog front end comprising a plurality of switches for sampling an analog physical quantity and a bootstrap generation network electrically coupled to the plurality of switches and configured to generate a bootstrap sampling clock for controlling the plurality of switches and generate a floating supply voltage for the bootstrap sampling clock based on the analog physical quantity.Type: GrantFiled: August 10, 2022Date of Patent: July 23, 2024Assignee: Cirrus Logic Inc.Inventors: Arashk Norouzpourshirazi, Stephen T. Hodapp, Ravi K. Kummaraguntla, Paul Wilson, Axel Thomsen
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Patent number: 11916543Abstract: An analog switch circuit of an embodiment includes a CMOS analog switch, a first gate drive circuit, and a second gate drive circuit, a gate operating withstand voltage of the CMOS analog switch being VGT, an enable signal and a control signal being inputted to the first gate drive circuit and the second gate drive circuit. Assuming that VGT<VSH?(2×VGT), in a case where the enable signal is 0, the second gate drive circuit outputs a signal of voltage (VSH/2) to a gate terminal of a PMOS when the control signal is 0, and the first gate drive circuit outputs a signal of voltage (VSH/2) to a gate terminal of an NMOS when the control signal is 1.Type: GrantFiled: August 29, 2022Date of Patent: February 27, 2024Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventor: Shigeo Imai
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Patent number: 11908528Abstract: An integrated circuit includes a charge pump. The charge pump includes a plurality of charge pump stages and a plurality of switches. The switches can operated to selectively couple the charge pump stages in various arrangements of series and parallel connections based on a currently selected operational mode of the charge pump. The charge pump assists in performing read and write operations for a memory array of the integrated circuit.Type: GrantFiled: November 15, 2021Date of Patent: February 20, 2024Assignee: STMicroelectronics International N.V.Inventors: Vikas Rana, Arpit Vijayvergia
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Patent number: 11804836Abstract: The present disclosure provides designs and techniques to improve turn “off” times of a bootstrapped switch, maximizing the total “on” time of the bootstrapped switch. The techniques described herein provide a protection device coupled to the bootstrapped switch. The protection device may be controlled by an input voltage to the bootstrapped switch during a boosting phase and may be controlled by a constant voltage during a non-boosting phase. The techniques for reducing turn “off” times are particularly useful in high-speed applications, such as high-speed, low-voltage analog-to-digital converters.Type: GrantFiled: May 20, 2022Date of Patent: October 31, 2023Assignee: Analog Devices, Inc.Inventor: Ronald A. Kapusta
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Patent number: 11528102Abstract: Aspects of the invention include a driver arranged at a stand-alone receiver that is configured to receive a binary sequence from a pseudorandom binary sequence (PRBS) generator arranged at the receiver. The driver is configured to adjust the signal characteristics of the binary sequence to simulate channel loss at the receiver. The driver is further configured to output the adjusted binary sequence to a downstream data path of the receiver to enable the receiver to perform a self-test.Type: GrantFiled: August 18, 2021Date of Patent: December 13, 2022Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dereje Yilma, Nathan Ross Blanchard, Erik English, Chad Andrew Marquart, Glen A. Wiedemeier, Jeffrey Kwabena Okyere, James Crugnale, Christopher Steffen, Vikram B Raj, Michael Wayne Harper, Venkat Harish Nammi
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Patent number: 11482155Abstract: Variations in a receiving circuit employing differential signaling are reduced. The receiving circuit converts a first signal and a second signal which are supplied through differential signaling into a third signal which is a single-ended signal and outputs the third signal. The receiving circuit includes an operational amplifier, a first element, a first transistor, and a first circuit. The first element is connected to the first circuit through a first node to which the first transistor is connected. The first signal and the second signal that is the inverse of the first signal are supplied to the operational amplifier. The operational amplifier supplies an output signal to the first element, and a first preset potential is supplied to the first node through the first transistor. A signal including variations of the operational amplifier is stored in the first element in accordance with the first preset potential.Type: GrantFiled: July 10, 2019Date of Patent: October 25, 2022Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Takeya Hirose, Takahiro Fukutome
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Patent number: 11437907Abstract: Disclosed herein is a charge pump architecture in which boosting capacitors of adjacent stages are connected only by NMOS type transistors and comprising a first stage receiving a first voltage and outputting an internal voltage; a second stage receiving the internal voltage and outputting a second voltage at an output terminal, and an auxiliary stage connected to the output terminal, the first stage and second stage including a first type of MOS transistors transferring the voltage from input node internal boosting nodes and being cross-coupled; a second type of MOS transistors with their gate biased by a third type of MOS transistors and fourth type of MOS transistors; the third type of MOS transistors connecting the gate of the second type of MOS transistors; and the fourth type of MOS transistors connecting the gate of the second type of MOS transistors.Type: GrantFiled: August 30, 2021Date of Patent: September 6, 2022Assignee: SK hynix Inc.Inventors: Onur Aker, Marco Passerini
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Patent number: 11404094Abstract: An apparatus is provided, where the apparatus includes a first transistor coupled between a supply node and an output node; a resistor and a second transistor coupled in series between the output node and a ground terminal; a circuitry to receive data, and to output a first control signal and a second control signal to respectively control the first transistor and the second transistor, wherein an output signal at the output node is indicative of the data, and wherein the first transistor is a N-type transistor.Type: GrantFiled: September 27, 2018Date of Patent: August 2, 2022Assignee: Intel CorporationInventors: Harishankar Sridharan, Karthik Tyamgondlu
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Patent number: 11315612Abstract: A semiconductor storing apparatus capable of suppressing a peak current in a pre-charge operation and shortening a sense time is provided. A pre-charge method of a bit line of an NAND type flash memory includes: turning on a transistor (BLPRE) and supplying a pre-charge voltage to a sense node (SNS) at time (t1); turning on a transistor (BLCLAMP) connected to the sense node (SNS) and used for generating a clamp voltage and turning on a transistor (BLCN) connected to a node (BLS) at time (t2), turning on a transistor (BLSe/BLSo) connected between the node (BLS) and a bit line (GBLe/GBLo) at time (t3), and performing the pre-charge operation on the bit line.Type: GrantFiled: March 30, 2021Date of Patent: April 26, 2022Assignee: Winbond Electronics Corp.Inventor: Sho Okabe
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Patent number: 11128300Abstract: A level shifter circuit with an intermediate power domain and method for operating the same is disclosed. The level shifter circuit includes an input circuit, an output circuit, and an intermediate circuit. The input circuit is coupled to receive an input signal from a first voltage domain operating according to a first supply voltage, and generates a first intermediate signal. The intermediate circuit receives the first intermediate signal and generates a second intermediate signal. The output circuit receives the intermediate signal and provides an output signal into a second voltage domain operating at a second supply voltage different from the first. A voltage multiplexer is configured to provide one of the first or second supply voltages to the intermediate circuit depending on a state of the input signal.Type: GrantFiled: March 16, 2020Date of Patent: September 21, 2021Assignee: Apple Inc.Inventors: Nathan F. Hanagami, Hao Zhou, Jianbao Wang, Ruopeng Wang, Ludmil N. Nikolov
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Patent number: 11081176Abstract: Provided are a device comprising a bit cell tile including at least two memory cells, each of the at least two memory cells including a resistive memory element, and methods of operating an array of the memory cells, each memory cell including a resistive memory element electrically coupled in series to a corresponding first transistor and to a corresponding second transistor, the first transistor including a first gate coupled to a corresponding one of a plurality of first word lines and the second transistor including a second gate coupled to a corresponding one of a plurality of second word lines, each memory cell coupled between a corresponding one of a plurality of bit lines and a corresponding one of a plurality of source lines. The methods may include applying voltages to the first word line, second word line, source line, and bit line of a memory cell selected for an operation, and resetting the resistive memory element of the memory cell in response to setting the selected bit line to ground.Type: GrantFiled: February 20, 2020Date of Patent: August 3, 2021Assignee: Hefei Reliance Memory LimitedInventors: Deepak Chandra Sekar, Wayne Frederick Ellis, Brent Steven Haukness, Gary Bela Bronner, Thomas Vogelsang
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Patent number: 10886931Abstract: A circuit includes analog input nodes and switches selectively coupling each of the analog input nodes to a capacitive node. Each of the switches is controlled by a respective bit of a channel selection word. Level shifting circuits are respectively coupled in parallel with the switches. A sampling capacitor is coupled between an output node and ground, the output node being coupled to the capacitive node. An analog to digital converter operates to digitize voltages at the output node.Type: GrantFiled: July 24, 2020Date of Patent: January 5, 2021Assignee: STMicroelectronics International N.V.Inventors: Rajesh Narwal, Kavindu Shekhar Benjwal
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Patent number: 10868469Abstract: A power converter for converting an input voltage at an input port into an output voltage at an output port of the power converter is described. The power converter comprises an inductor having a first inductor port and a second inductor port, wherein the second inductor port is coupled to the output port. Furthermore, the power converter comprises a flying capacitor having a first capacitor port and a second capacitor port, and a switching cell. In addition, the power converter comprises a control unit to operate the switching cell in a first sequence of operation phases to perform step-up conversion; and in a second sequence of operation phases to perform step-down conversion.Type: GrantFiled: October 23, 2019Date of Patent: December 15, 2020Assignee: Dialog Semiconductor (UK) LimitedInventor: Holger Petersen
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Patent number: 10771055Abstract: Provided is a switching device including: a cascode switch including at least two transistors connected in series and receiving a switching control signal; and a third switch receiving the switching control signal, wherein the at least two transistors include a first transistor receiving the switching control signal through a control terminal and a second transistor having a control terminal connected to a first voltage source, and wherein the third switch is connected between the control terminal and the first terminal of the second transistor, is turned off when the first transistor is turned on, and is turned on when the first transistor is turned off.Type: GrantFiled: July 25, 2017Date of Patent: September 8, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Nikolay Nikolayevich Olyunin, Alexander Nikolayevich Khripkov, Alexander Gennadyevich Chernokalov
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Patent number: 10715137Abstract: Devices, systems, and methods are provided for generating a high, dynamic voltage boost. An integrated circuit (IC) includes a driving circuit having a first stage and a second stage. The driving circuit is configured to provide an overdrive voltage. The IC also includes a charge pump circuit coupled between the first stage and the second stage. The charge pump circuit is configured generate a dynamic voltage greater than the overdrive voltage. The IC also includes a bootstrap circuit coupled to the charge pump circuit, configured to further dynamically boost the overdrive voltage of the driving circuit.Type: GrantFiled: October 19, 2018Date of Patent: July 14, 2020Assignee: Taiwan Semiconductor Manufacturing Company LimitedInventors: Chan-Hong Chern, Tysh-Bin Liu, Kun-Lung Chen
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Patent number: 10475705Abstract: Disclosed is a voltage regulator for an integrated circuit. The voltage regulator can be configured to regulate a supply voltage provided to the integrated circuit. The integrated circuit can operate a near threshold value irrespective of a magnitude of the supply voltage. The voltage regulator can include a single Field Effect Transistor (FET) based circuit. The single FET based circuit can be configured to regulate the supply voltage.Type: GrantFiled: November 20, 2017Date of Patent: November 12, 2019Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: Shuza Binzaid, Avadhoot Herlekar
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Patent number: 10476390Abstract: A power converter for converting an input voltage at an input port into an output voltage at an output port of the power converter is described. The power converter comprises an inductor having a first inductor port and a second inductor port, wherein the second inductor port is coupled to the output port. Furthermore, the power converter comprises a flying capacitor having a first capacitor port and a second capacitor port, and a switching cell. In addition, the power converter comprises a control unit to operate the switching cell in a first sequence of operation phases to perform step-up conversion; and in a second sequence of operation phases to perform step-down conversion.Type: GrantFiled: December 6, 2016Date of Patent: November 12, 2019Assignee: Dialog Semiconductor (UK) LimitedInventor: Holger Petersen
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Patent number: 10396579Abstract: An electronic circuit is disclosed. The electronic circuit includes a GaN substrate, a first power supply node on the substrate, an output node, a signal node, and an output component on the substrate, where the output component is configured to generate a voltage at the output node based at least in part on a voltage at the signal node. The electronic circuit also includes a capacitor coupled to the signal node, where, the capacitor is configured to selectively cause the voltage at the signal node to be greater than the voltage of the first power supply node, such that the output component causes the voltage at the output node to be substantially equal to the voltage of the first power supply node.Type: GrantFiled: July 24, 2017Date of Patent: August 27, 2019Assignee: NAVITAS SEMICONDUCTOR, INC.Inventors: Daniel Marvin Kinzer, Santosh Sharma, Ju Zhang
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Patent number: 10355686Abstract: Methods and systems for reliable bootstrapping switches may comprise sampling a received signal with a bootstrapping switch, where the bootstrapping switch comprises a switching metal-oxide semiconductor (MOS) transistor having a pull-down path coupled to a gate terminal of the switching MOS transistor, wherein: source terminals of both a diode-connected transistor and a second MOS transistor are coupled to the gate terminal of the switching MOS transistor; drain terminals of both the diode-connected transistor and the second MOS transistor are coupled to a source terminal of a third MOS transistor, the third MOS transistor coupled in series with a fourth MOS transistor; and a drain terminal of the fourth MOS transistor is coupled to ground. The third and fourth MOS transistors may be in series with the second MOS transistor. A gate terminal of the fourth transistor may be switched from ground to a supply voltage to activate the pull-down path.Type: GrantFiled: August 7, 2018Date of Patent: July 16, 2019Assignee: Maxlinear, Inc.Inventors: Yongjian Tang, Xuefeng Chen
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Patent number: 10250250Abstract: The trend in wireless communication receivers is to capture more and more bandwidth to support higher throughput, and to directly sample the radio frequency (RF) signal to enable re-configurability and lower cost. Other applications like instrumentation also demand the ability to digitize wide bandwidth RF signals. These applications benefit from input circuitry which can perform well with high speed, wide bandwidth RF signals. An input buffer and bootstrapped switch are designed to service such applications, and can be implemented in 28 nm complementary metal-oxide (CMOS) technology.Type: GrantFiled: August 29, 2017Date of Patent: April 2, 2019Assignee: ANALOG DEVICES, INC.Inventors: Siddharth Devarajan, Lawrence A. Singer
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Patent number: 10236770Abstract: The present disclosure relates to a high-voltage generator with multi-stage selection in low-voltage transistor process which include a boosted circuit, a plurality of switch and a feedback circuit. The boosted circuit includes multiple charge pump, so that can generate a DC output voltage higher or lower than the input signal. Turning on or turning off each switch controlled by a control signal respectively. Both ends of the circuit is connected to the output end of the high-voltage generator and charge pumps. By controlling the turning on or turning off each switch, it determines the magnitude of the boost and it also can ensure that switches will not be damaged due to excessive voltage difference.Type: GrantFiled: March 6, 2018Date of Patent: March 19, 2019Assignee: NATIONAL CHIAO TUNG UNIVERSITYInventors: Ming-Dou Ker, Li-Chin Yu
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Patent number: 10198052Abstract: Embodiments are described including those for controlling peak current consumption of a multi-chip memory package during power-up. In one embodiment, each memory device of the multi-chip package includes a power level detector used to compare an internal voltage signal to a threshold. A current limiter controls the ramping rate of the internal voltage signal in response to the power level detector as the internal voltage signal ramps up towards the threshold.Type: GrantFiled: November 4, 2014Date of Patent: February 5, 2019Assignee: Micron Technology, Inc.Inventor: June Lee
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Patent number: 10050621Abstract: A semiconductor device includes a power transistor and a driving circuit. The driving circuit is coupled to and is configured to drive the power transistor and includes first and second stages. The second stage is coupled between the first stage and the power transistor. Each of the first and second stages includes a pair of enhancement-mode high-electron-mobility transistors (HEMTs). The construction as such lowers a static current of the driving circuit.Type: GrantFiled: September 29, 2016Date of Patent: August 14, 2018Assignee: Taiwan Semiconductor Manufacturing Company LimitedInventors: Chan-Hong Chern, Chu Fu Chen, Chun Lin Tsai, Mark Chen, King-Yuen Wong, Ming-Cheng Lin, Tysh-Bin Liu
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Patent number: 9972586Abstract: In order to realize a silicon PUF of lower power consumption, a semiconductor device includes first and second MIS transistors of the same conductive type in off-state coupled in series, as a PUF element. The PUF element outputs a signal of high level or low level depending on the potential of a connection node of the first and the second MIS transistors. Preferably, the MIS transistors are fin-type FETs.Type: GrantFiled: July 15, 2016Date of Patent: May 15, 2018Assignee: Renesas Electronics CorporationInventor: Takeshi Okagaki
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Patent number: 9847713Abstract: A charge pump circuit having first and second input nodes to be coupled to a first power source, and top and bottom output nodes and an intermediate node. The charge pump circuit produces i) a voltage at the top output node that is higher than a voltage of the intermediate node, and ii) a voltage at the bottom output node that is lower than the voltage of the intermediate node. A bias voltage source has i) an input that is to be coupled to a second power source and ii) an output that produces an output voltage, which is a predetermined proportion of an input voltage at the input and that follows the input voltage downward and upward as the input voltage sags and recovers, respectively. The output of the bias voltage source is directly connected to the intermediate node of the output stage. Other embodiments are also described.Type: GrantFiled: March 15, 2016Date of Patent: December 19, 2017Assignee: APPLE INC.Inventors: David C. Breece, III, Roderick B. Hogan, Nathan A. Johanningsmeier
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Patent number: 9813057Abstract: A sampling circuit for sampling an input voltage and generating an output voltage, comprising six switches, a capacitor and a voltage buffer. The first switch has a control terminal and makes the output voltage equal to the input voltage when switching on. The second switch is coupled to a first terminal of the capacitor and a first level. The third switch is coupled to a second terminal of the capacitor and a second level. The fourth switch is coupled to the first terminal of the capacitor and the control terminal. The fifth switch is coupled to the control terminal and the second level. The voltage buffer has large input impedance, and has an input receiving the input voltage, an output providing a voltage equal or close to the input voltage. The sixth switch is coupled to the second terminal of the capacitor and the output of the voltage buffer.Type: GrantFiled: March 1, 2017Date of Patent: November 7, 2017Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Ming-Cheng Chiang, Li-Lung Kao
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Patent number: 9781371Abstract: A solid state image sensor includes a pixel array, as well as charge-to-voltage converters, reset gates, and amplifiers each shared by a plurality of pixels in the array. The voltage level of the reset gate power supply is set higher than the voltage level of the amplifier power supply. Additionally, charge overflowing from photodetectors in the pixels may be discarded into the charge-to-voltage converters. The image sensor may also include a row scanner configured such that, while scanning a row in the pixel array to read out signals therefrom, the row scanner resets the charge in the photodetectors of the pixels sharing a charge-to-voltage converter with pixels on the readout row. The charge reset is conducted simultaneously with or prior to reading out the signals from the pixels on the readout row.Type: GrantFiled: December 2, 2015Date of Patent: October 3, 2017Assignee: Sony CorporationInventors: Takeshi Yanagita, Keiji Mabuchi, Hiroaki Ishiwata
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Patent number: 9755582Abstract: A switch circuit comprising: a plurality of switches; a switching module; and a capacitor, having a first terminal and a second terminal, wherein the first terminal is coupled to a predetermined voltage, and the second terminal is coupled to a control terminal of at least the switch in a conductive mode via the switching module, to thereby control a conductive state for the at least one switch.Type: GrantFiled: July 29, 2012Date of Patent: September 5, 2017Assignee: Realtek Semiconductor Corp.Inventors: Jian-Ru Lin, Shin-Syong Huang
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Patent number: 9641166Abstract: An apparatus and method for implementing a bootstrapped switching circuit having improved (i.e. faster) turn-on time is provided. In an embodiment, an inner switching loop is implemented in a bootstrapped switching circuit where the inner switching loop is configured to turn on an input switch in the bootstrapped drive circuit independent of the drive circuit output. The embodiment decouples the inner switching loop circuitry from the output drive circuit of the bootstrapped switching circuit, which typically has a larger load capacitance than the inner switching loop. This allows the inner switching loop to turn on the input switch in the bootstrapped switching circuit faster and decreases the turn-on time of the bootstrapped switching circuit.Type: GrantFiled: March 12, 2014Date of Patent: May 2, 2017Assignee: ANALOG DEVICES, INC.Inventors: Siddharth Devarajan, Lawrence A. Singer
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Patent number: 9621157Abstract: A sampling circuit for sampling an input voltage and generating an output voltage, comprising six switches, a capacitor and a voltage buffer. The first switch has a control terminal and makes the output voltage equal to the input voltage when switching on. The second switch is coupled to a first terminal of the capacitor and a first level. The third switch is coupled to a second terminal of the capacitor and a second level. The fourth switch is coupled to the first terminal of the capacitor and the control terminal. The fifth switch is coupled to the control terminal and the second level. The voltage buffer has large input impedance, and has an input receiving the input voltage, an output providing a voltage equal or close to the input voltage. The sixth switch is coupled to the second terminal of the capacitor and the output of the voltage buffer.Type: GrantFiled: December 2, 2015Date of Patent: April 11, 2017Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Ming-Cheng Chiang, Li-Lung Kao
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Patent number: 9584020Abstract: Devices and methods provide a duty cycle clamping device for preventing an output voltage of a power converter from decreasing as the duty cycle of a pulse width modulation (PWM) signal driving the power converter increases, the clamping device including duty cycle clamping circuitry configured to determine a critical duty cycle for the PWM signal based on an input voltage, a top voltage of a flying capacitor and a bottom voltage of the flying capacitor, and configured to clamp an actual duty cycle of the PWM signal at the critical duty cycle if a desired duty cycle exceeds the critical duty cycle.Type: GrantFiled: February 5, 2015Date of Patent: February 28, 2017Assignee: Fairchild Semiconductor CorporationInventor: Rendon Holloway
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Patent number: 9559713Abstract: An analog-to-digital converter (ADC) is used for dynamic tracking nonlinearity correction. The correction employs an analog sampling technique to determine the signal derivative by measuring the derivative current arising from sampling an analog input signal undergoing analog-to-digital conversion, at the sampling instant. The analog derivative sampling technique achieves significant reduction in power consumption with less complexity compared with a digital approach, with strong improvements in HD3, SDFR, and IM3 measures.Type: GrantFiled: March 1, 2016Date of Patent: January 31, 2017Assignee: Broadcom CorporationInventors: Rong Wu, Tianwei Li
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Patent number: 9479882Abstract: An audio accessory key detection system (40) includes a host circuit (2-3) coupled to communicate via a microphone line (7) with an accessory circuit (3-3) in either a MSFT mode or a digital communication mode. Depletion mode transistors (44-1,2,3) in the accessory circuit are coupled between keys (15-1,2,3) of the accessory circuit, respectively. The depletion mode transistors are allowed to remain conductive for MSFT mode operation. For digital communications mode operation, the host circuit sends a command via the microphone line to a key detector and controller circuit (29A) in the accessory circuit. In response, a voltage is generated to turn the depletion mode transistors off so as to allow digital communications mode operation between the accessory circuit and the host circuit.Type: GrantFiled: March 6, 2013Date of Patent: October 25, 2016Assignee: Texas Instruments IncorporatedInventors: Ball Fan, Wenpang David Wang, Christopher Michael Graves
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Patent number: 9466493Abstract: A sense amplifier (SA) comprises a semiconductor substrate having an oxide definition (OD) region, a pair of SA sensing devices, a SA enabling device, and a sense amplifier enabling signal (SAE) line for carrying an SAE signal. The pair of SA sensing devices have the same poly gate length Lg as the SA enabling device, and they all share the same OD region. When enabled, the SAE signal turns on the SA enabling device to discharge one of the pair of SA sensing devices for data read from the sense amplifier.Type: GrantFiled: July 11, 2013Date of Patent: October 11, 2016Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Yen-Huei Chen, Chien Chi Tien, Kao-Cheng Lin, Jung-Hsuan Chen
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Patent number: 9401727Abstract: In a time-interleaved Analog to Digital Converter, circuit components and capacitances may be shared among a plurality of sample and hold circuits in each of two sets. The two shared circuits alternate, on different half-periods of a master clock signal, between charging a capacitance and sampling an input in an overlapping manner such that one is charging while the other is sampling. One sample and hold circuit is activated during each successive half-period (following a charging half-period) by independent, sequential, non-overlapping clocking signals. To improve SNDR, at least one switch is bootstrapped by driving its gate terminal with the voltage of a capacitor configured between the gate and the input signal. By sharing at least some components among multiple sample and hold circuits, the number of gates driven by clock signals is reduced, reducing clock distribution and calibration complexity, and the circuit area is reduced.Type: GrantFiled: August 27, 2015Date of Patent: July 26, 2016Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Daniele Mastantuono, Mattias Palm, Roland Strandberg
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Patent number: 9378844Abstract: Electric charge is stored, in accordance with a bias voltage, in a gate of a transistor performing switching operation between an input terminal and an output terminal, and the gate is brought into an electrically floating state at the time of completing the storage of electric charge in the gate. One electrode of a capacitor is connected to the gate in an electrically floating state, and the potential of the other electrode of the capacitor is increased, so that the voltage of the gate is increased using capacitive coupling. The potential of the gate of the transistor is increased, and the bias voltage is sampled without being decreased. Each of the transistor performing switching operation and a transistor connected to the gate of the transistor is a transistor with an extremely low off-state current.Type: GrantFiled: July 29, 2014Date of Patent: June 28, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Kei Takahashi
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Patent number: 9325312Abstract: An input control circuit that can be used to drive analog switches of analog modules such as an analog-to-digital converter (ADC) enables a sampling switch to receive a higher input voltage than the voltage rating of the devices comprising the sampling switch without risk of damage and without the need for a resistor divider network. The input control circuit and switch both receive an input voltage to be processed and the input control circuit generates a control signal for the switch that is derived from a pre-charged capacitor. The control circuit permits the design and manufacture of high voltage analog modules using low voltage devices, which can save on mask costs without any performance trade-offs.Type: GrantFiled: December 11, 2014Date of Patent: April 26, 2016Assignee: FREESCALE SEMICONDUCTOR, INC.Inventors: Mayank Jain, Sanjoy K. Dey
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Patent number: 9287002Abstract: A sampling circuit may include a sampling capacitance, an electronic sampling switch, and a switch controller. The electronic sampling switch may have a control input that controls whether the electronic sampling switch is in a sample state or a hold state. The electronic sampling switch may connect the sampling capacitance to an input signal while in the sample state and disconnect the sampling capacitance from the input signal while in the hold state. The switch controller may control the control input to the electronic sampling switch so as to cause the electronic sampling switch to be in the sample state during one period and the hold state during another period. While in the sample state, the switch controller may cause the impedance of the electronic sampling switch that is seen by the input signal to be substantially independent of the voltage of the input signal.Type: GrantFiled: September 17, 2014Date of Patent: March 15, 2016Assignee: LINEAR TECHNOLOGY CORPORATIONInventor: David M. Thomas
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Patent number: 9247172Abstract: A solid state image sensor includes a pixel array, as well as charge-to-voltage converters, reset gates, and amplifiers each shared by a plurality of pixels in the array. The voltage level of the reset gate power supply is set higher than the voltage level of the amplifier power supply. Additionally, charge overflowing from photodetectors in the pixels may be discarded into the charge-to-voltage converters. The image sensor may also include a row scanner configured such that, while scanning a row in the pixel array to read out signals therefrom, the row scanner resets the charge in the photodetectors of the pixels sharing a charge-to-voltage converter with pixels on the readout row. The charge reset is conducted simultaneously with or prior to reading out the signals from the pixels on the readout row.Type: GrantFiled: September 19, 2013Date of Patent: January 26, 2016Assignee: Sony CorporationInventors: Takeshi Yanagita, Keiji Mabuchi, Hiroaki Ishiwata
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Patent number: 9218513Abstract: A switching circuit is linearized by using a capacitor to apply a drive voltage to an FET, wherein the drive voltage is independent of the signal switched by the switching circuit.Type: GrantFiled: December 21, 2012Date of Patent: December 22, 2015Assignee: Sequans CommunicationsInventors: Thomas Winiecki, Olujide Adeyemi Adeniran
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Patent number: 9152497Abstract: A storage module may include a NAND-type flash memory array and one or more controllers configured to increase gate bias voltage levels applied to gates in the memory array to overcome possible gate shorts and recover data identified as being uncorrectable. The increased gate bias voltages may be applied to gates of a single type of transistor or to different types of transistors in the memory array, including drain select transistors, source select transistors, or floating gate transistors.Type: GrantFiled: August 23, 2013Date of Patent: October 6, 2015Assignee: SanDisk Technologies Inc.Inventors: Dana Lee, Abhijeet Manohar
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Patent number: 9093232Abstract: An electronic switch may include transfer transistor having a first conduction terminal for receiving an input signal, a second conduction terminal, and a control terminal. The transfer transistor may enable/disable a transfer of the input signal from the first conduction terminal to the second conduction terminal according to a control signal. The control signal may take a first value and a second value different from the first value, a difference between the first value and the second value defining, in absolute value, an operative value of the control signal. The electronic switch may further comprise a driving circuit for receiving the input signal and the control signal, and for providing a driving signal equal to the sum between the input signal and the operative value of the control signal to the control terminal of the transfer transistor.Type: GrantFiled: April 9, 2013Date of Patent: July 28, 2015Assignee: STMICROELECTRONICS S.R.L.Inventors: Enrico Castaldo, Antonino Conte, SantiNunzioAntonino Pagano, Stefania Rinaldi
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Patent number: 9024558Abstract: A bridge output circuit includes an output terminal, a high side transistor, a low side transistor, a high side driver for controlling a gate voltage of the high side transistor, a low side driver for controlling a gate voltage of the low side transistor, and a controller for controlling the high side and low side drivers. The low side driver includes a first current source, a second current source, and a first assist circuit. The controller is configured to control the turning-on and turning-off states of the first current source, the second current source and the first assist circuit.Type: GrantFiled: May 24, 2013Date of Patent: May 5, 2015Assignee: Rohm Co., Ltd.Inventor: Hisashi Sugie
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Patent number: 9019000Abstract: A driver circuit for a semiconductor switching device includes a drive power source, a capacitor and four switches, which form a bridge circuit. The capacitor is provided between the four switches. In one cycle of application of a voltage to a gate of the semiconductor switching device to turn on the semiconductor switch, the first and the second switches, which are diagonal, are turned off and the third and the fourth switches, which are diagonal, are turned on to charge the capacitor. Then only the first switch is turned on to apply the voltage to the gate, and lastly only the second switch is turned on to discharge the capacitor thereby to apply a negative voltage to the gate of the semiconductor switching device.Type: GrantFiled: January 24, 2014Date of Patent: April 28, 2015Assignee: DENSO CORPORATIONInventor: Kazuhiro Umetani
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Publication number: 20150109161Abstract: A bootstrapped switch circuit capable of operating at input signals from far below the negative supply rail to far beyond the positive supply rail may include (a) a switch having a first terminal coupled to an input terminal, a second terminal coupled to an output terminal, and a control terminal; (b) a charge pump coupled to one or more clock signals and isolated from a timing circuit via a first capacitor and a second capacitor, the charge pump generating an output voltage; and (c) a logic circuit coupled to one or more clock signals and isolated from the timing control circuit via a third capacitor and a fourth capacitor, wherein the logic circuit provides a control signal to the control terminal of the switch that is derived from the output voltage of the charge pump.Type: ApplicationFiled: January 16, 2014Publication date: April 23, 2015Applicant: Linear Technology CorporationInventor: Gerd TRAMPITSCH
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Patent number: 8994439Abstract: A semiconductor device which has reduced power consumption and includes a selection transistor is provided. A semiconductor device in which the number of wirings and terminals for inputting a power supply potential is reduced and which operates at high speed is provided. A buffer circuit connected to a gate line connected to a gate of the selection transistor has a function of generating a potential higher than a high power supply potential by using the high power supply potential and outputs the potential depending on the selection signal. A bootstrap circuit boosts a high power supply potential that is input to an inverter that is the closest to an output side among a plurality of inverters included in a buffer circuit. Further, by providing a delay circuit in the buffer circuit, the bootstrap circuit starts to boost a potential at the timing later than the input of the selection signal.Type: GrantFiled: April 15, 2013Date of Patent: March 31, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Makoto Kaneyasu, Kouhei Toyotaka
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Patent number: 8981843Abstract: This document discusses, among other things, a control circuit, such as a translator circuit, configured to reduce voltage stress of first and second transistors when a first voltage received by the first transistor exceeds a voltage rating of at least one of the first or second transistors.Type: GrantFiled: March 11, 2013Date of Patent: March 17, 2015Assignee: Fairchild Semiconductor CorporationInventors: Nickole Gagne, Kenneth P. Snowdon
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Publication number: 20150042547Abstract: A gate driver, including multiple stages of gate driving circuits, wherein each stage of the gate driving circuits includes an input part configured to generate a Q node signal in response to a carry signal of one of previous stages and a clock signal, the Q node signal being applied to Q node, an output part configured to output a gate output signal to a gate output terminal in response to the Q node signal, and a charge sharing part connected to the gate output terminal of a present stage and a gate output terminal of one of next stages, the charge sharing part configured to operate charge-sharing between the gate output signal of the present stage and a gate output signal of one of the next stages in response to a select signal.Type: ApplicationFiled: June 23, 2014Publication date: February 12, 2015Inventors: Oh-Kyong KWON, Yeong-Keun KWON, Jong-Hee KIM, Ji-Sun KIM, Jae-Keun LIM, Chong-Chul CHAI
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Patent number: 8907701Abstract: The present invention discloses a CMOS differential logic circuit. The CMOS differential logic circuit includes a precharge differential logic unit, which is precharged to a source voltage in response to a clock signal and is configured to output voltage having an increased load-driving ability using a boosting voltage; a voltage-boosting unit, which is pulled down by a ground voltage in response to the clock signal and is configured to boost the pulled-down voltage using capacitive coupling and output the boosting voltage; and a switching unit, which is configured to couple the precharge differential logic unit and the voltage-boosting unit in response to the clock signal. The propagation delay of a signal from the input terminal to the output terminal of a circuit in a low-source-voltage environment can be reduced, and the operating speed of the circuit and energy efficiency of the operation thereof can be improved.Type: GrantFiled: February 19, 2013Date of Patent: December 9, 2014Assignee: Research & Business Foundation Sungkyunkwan UniversityInventors: Bai Sun Kong, Jong Woo Kim, Joo Seong Kim