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公开(公告)号：US12040628B2
公开(公告)日：2024-07-16
申请号：US17576052
申请日：2022-01-14
发明人： Yannick Guedon
CPC分类号： H02J50/12 , H02M1/0025 , H02M7/219
摘要： A bridge rectifier is controlled by control circuitry to act a “regtifier” which both regulates and rectifies without the use of a traditional voltage regulator. To accomplish this, the gate voltages of transistors of the bridge that are on during a given phase may be modulated to dissipate excess power. Gate voltages of transistors of the bridge that are off during the given phase may alternatively or additionally be modulated to dissipate excess power. The regtifier may act as two half-bridges that each power a different voltage converter, with those voltage converters powering a battery. The voltage converters may be switched capacitor voltage converters that switch synchronously with switching of the two half-bridges as they perform rectification.
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公开(公告)号：US20240154460A1
公开(公告)日：2024-05-09
申请号：US18412718
申请日：2024-01-15
发明人： Yannick Guedon
CPC分类号： H02J50/10 , H02J7/0029 , H02J50/12 , H02J50/80
摘要： An over-voltage protection circuit and methods of operation are provided. In one embodiment, a method includes monitoring a voltage at an output of a rectifier, a voltage at an output of a voltage regulator, or a combination thereof. The method further includes determining the over-voltage condition based on the monitoring; and in response to determining the over-voltage condition, regulating the voltage at the output of the rectifier in accordance with a voltage difference between the voltage at the output of the rectifier and the voltage at the output of the voltage regulator.
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公开(公告)号：US20210377084A1
公开(公告)日：2021-12-02
申请号：US17402108
申请日：2021-08-13
发明人： Yannick Guedon
摘要： A power transmitter includes: a first switch coupled between a first node and a reference voltage node; a second switch configured to be coupled between a power supply and the first node; a coil and a capacitor coupled in series between the first node and the reference voltage node; a first sample-and-hold (S&H) circuit having an input coupled to the first node; and a timing control circuit configured to generate a first control signal, a second control signal, and a third control signal that have a same frequency, where the first control signal is configured to turn ON and OFF the first switch alternately, the second control signal is configured to turn ON and OFF the second switch alternately, and where the third control signal determines a sampling time of the first S&H circuit and has a first pre-determined delay from a first edge of the first control signal.
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公开(公告)号：US20180101266A1
公开(公告)日：2018-04-12
申请号：US15840438
申请日：2017-12-13
发明人： Yannick Guedon , Sze-Kwang Tan , Dianbo Guo
CPC分类号： G06F3/044 , G06F3/0414 , G06F3/0416 , G06F2203/04103 , G06F2203/04108
摘要： A readout device for a capacitive sense matrix includes a computer readable storage medium configured to store capacitance data. The capacitance data represents capacitance values of the capacitive sense matrix. The readout device also includes a readout circuit configured to receive a signal from the capacitive sense matrix, the readout circuit being configured based upon the capacitance data. Also described are a readout method and a method of compensating for variations in capacitance.
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公开(公告)号：US20180101264A1
公开(公告)日：2018-04-12
申请号：US15838675
申请日：2017-12-12
发明人： Chee Weng Cheong , Dianbo Guo , Kien Beng Tan , Yannick Guedon
CPC分类号： G06F3/044 , G06F3/041 , G06F3/0418
摘要： A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. The controller is also configured to in a third phase, charge the capacitor by coupling the capacitor between the common mode and the power supply, and in a fourth phase, share charge between the line and the capacitor by coupling the voltage regulator and the capacitor in series between the line and the ground.
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6.发明授权Configurable analog front-end for mutual capacitance sensing and self capacitance sensing 有权可配置的模拟前端，用于互电容感测和自电容感测公开(公告)号：US09523725B2
公开(公告)日：2016-12-20
申请号：US14322244
申请日：2014-07-02
发明人： Kien Beng Tan , Ernesto Lasalandra , Tommaso Ungaretti , Yannick Guedon , Dianbo Guo , Paolo Angelini , Giovanni Carlo Tripoli
CPC分类号： G01R27/2605 , G06F3/0416 , G06F3/044 , G06F2203/04104
摘要： Capacitance sensing circuits and methods are provided. A dual mode capacitance sensing circuit includes a capacitance-to-voltage converter having an amplifier and an integration capacitance coupled between an output and an inverting input of the amplifier, and a switching circuit responsive to mutual mode control signals for a controlling signal supplied from a capacitive touch matrix to the capacitive to voltage converter in a mutual capacitance sensing mode and responsive to self mode control signals for controlling signals supplied from the capacitive touch matrix to the capacitance-to-voltage converter in a self capacitance sensing mode, wherein the capacitance sensing circuit is configurable for operation in the mutual capacitance sensing mode or the self capacitance sensing mode.
摘要翻译： 提供电容感测电路和方法。 双模电容感测电路包括具有放大器和耦合在放大器的输出和反相输入端之间的积分电容器的电容 - 电压转换器，以及响应于从模拟信号提供的控制信号的相互模式控制信号的开关电路 电容式触摸矩阵到互电容感测模式中的电容到电压转换器，并且响应于用于在自电容感测模式中控制从电容式触摸矩阵提供给电容 - 电压转换器的信号的自模式控制信号，其中电容感测 电路可配置为在互电容感测模式或自身电容感测模式下工作。
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公开(公告)号：US20160124541A1
公开(公告)日：2016-05-05
申请号：US14531631
申请日：2014-11-03
发明人： Chee Weng Cheong , Dianbo Guo , Kien Beng Tan , Yannick Guedon
CPC分类号： G06F3/044 , G06F3/041 , G06F3/0418
摘要： A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. The controller is also configured to in a third phase, charge the capacitor by coupling the capacitor between the common mode and the power supply, and in a fourth phase, share charge between the line and the capacitor by coupling the voltage regulator and the capacitor in series between the line and the ground.
摘要翻译： 电容放电电路包括具有电容的线路，包括电容器的开关电容器电路，耦合到线路的开关电路以及耦合在开关电容器电路和开关电路之间的电压调节器。 控制器将开关电容器电路和开关电路在第一相中进行操作，通过在公共模式和电源之间耦合电容器对电容器进行充电，而在第二阶段，通过将电压调节器与 电源节点之间的电容器接地。 控制器还被配置为在第三阶段中，通过在公共模式和电源之间耦合电容器来对电容器进行充电，并且在第四阶段中，通过将电压调节器和电容器之间的耦合来在线路和电容器之间共享电荷 线与地之间的系列。
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8.发明申请METHOD & CIRCUIT FOR PARASITIC CAPACITANCE CANCELLATION FOR SELF CAPACITANCE SENSING 有权用于自适应感测的PARASIIC电容消除的方法和电路公开(公告)号：US20140292705A1
公开(公告)日：2014-10-02
申请号：US13853887
申请日：2013-03-29
发明人： Sze-Kwang Tan , Yannick Guedon
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0418
摘要： Apparatus and methods to measure capacitance changes for a touch-sensitive capacitive matrix are described. Charge-removal circuits and measurement techniques may be employed to cancel deleterious effects of parasitic capacitances in the touch-sensitive capacitive matrix. Capacitively switching a supply during timed charge removal may be used to cancel unwanted effects due to clock jitter. The apparatus and methods can improve signal-to-noise characteristics, sensitivity, and/or dynamic range for capacitive measurements relating to touch-sensitive capacitive devices.
摘要翻译： 描述了用于测量触敏电容矩阵的电容变化的装置和方法。 可以采用电荷去除电路和测量技术来消除触敏电容矩阵中寄生电容的有害影响。 在定时充电移除期间电容切换电源可用于消除由于时钟抖动引起的不必要的影响。 该装置和方法可以提高与触敏电容器件相关的电容测量的信噪比特性，灵敏度和/或动态范围。
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公开(公告)号：US12040724B2
公开(公告)日：2024-07-16
申请号：US17576120
申请日：2022-01-14
发明人： Yannick Guedon
摘要： A bridge rectifier and associated control circuitry collectively form a “regtifier” which rectifies an input time varying voltage and regulates the rectified output voltage produced without the use of a traditional voltage regulator. To accomplish this, the gate voltages of transistors of the bridge rectifier that are on during a given phase may be modulated via analog control (to increase the on-resistance of those transistors) or via pulse width modulation (to turn off those transistors prior to the end of the phase). The transistors of the bridge rectifier that would otherwise be off during a given phase may be turned on to help dissipate excess power and thereby regulate the output voltage. This modulation is based upon both a voltage feedback signal and a current feedback signal.
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公开(公告)号：US20230035218A1
公开(公告)日：2023-02-02
申请号：US17967449
申请日：2022-10-17
发明人： Yannick Guedon
摘要： A power transmitter includes: a first switch coupled between a first node and a reference voltage node; a second switch configured to be coupled between a power supply and the first node; a coil and a capacitor coupled in series between the first node and the reference voltage node; a first sample-and-hold (S&H) circuit having an input coupled to the first node; and a timing control circuit configured to generate a first control signal, a second control signal, and a third control signal that have a same frequency, where the first control signal is configured to turn ON and OFF the first switch alternately, the second control signal is configured to turn ON and OFF the second switch alternately, and where the third control signal determines a sampling time of the first S&H circuit and has a first pre-determined delay from a first edge of the first control signal.
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