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1.发明申请SWITCHING CIRCUIT FOR A TRANSMISSION CHANNEL FOR ULTRASOUND APPLICATIONS, TRANSMISSION CHANNEL AND PROCESS FOR DRIVING A SWITCHING CIRCUIT 有权用于超声波应用的传输信道的切换电路，传输信道和用于驱动交换电路的过程公开(公告)号：US20130265855A1
公开(公告)日：2013-10-10
申请号：US13907493
申请日：2013-05-31
CPC分类号： H03K5/084 , H03K17/102 , H03K17/6872 , H03K17/6874 , H03K17/693 , H03K2217/0054 , H04B11/00
摘要： A switching circuit for transmission channel for ultrasound applications is electrically coupled between a connection terminal and a low voltage output terminal. The switching circuit includes a receiving switch, a high voltage clamp circuit electrically coupled between the connection terminal and a central node, and a low voltage clamping switch electrically coupled between said central node and a reference voltage. The receiving switch is a low voltage switch and is electrically coupled between the central node and the low voltage output terminal. The clamping switch and the receiving switch are controlled in a complementary way with respect to each other. A transmission channel for ultrasound applications includes the switching circuit
摘要翻译： 用于超声应用的传输通道的切换电路电耦合在连接端子和低电压输出端子之间。 开关电路包括接收开关，电连接在连接端子和中心节点之间的高电压钳位电路以及电耦合在所述中心节点和参考电压之间的低压钳位开关。 接收开关是低压开关，并且电耦合在中心节点和低压输出端子之间。 夹紧开关和接收开关以互补的方式相互控制。 用于超声应用的传输通道包括开关电路
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公开(公告)号：US11888384B2
公开(公告)日：2024-01-30
申请号：US17532833
申请日：2021-11-22
CPC分类号： H02M1/0006 , H02M3/158
摘要： In an embodiment, a switching converter includes: a switching stage including first and second switching devices for receiving an input voltage and for providing an output voltage; a driving stage including first and second driving devices for driving the first and second switching devices, respectively; a current sensing arrangement for sensing an output current provided by the switching stage; a voltage generation arrangement configured to generate a supply voltage for powering the driving stage, the voltage generation arrangement being configured to adjust the supply voltage according to the sensed output current; and a charge recovery stage configured to store a first electric charge being lost from the first driving device during driving of the first switching device and to release at least partially the stored first electric charge to the second driving device during driving of the second switching device.
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公开(公告)号：US10177759B2
公开(公告)日：2019-01-08
申请号：US15193600
申请日：2016-06-27
发明人： Valeria Bottarel , Sandro Rossi
IPC分类号： H03K17/687 , A61B8/00 , H03K5/08 , H03K17/74
摘要： Switching circuitry includes first and second transistors in series between two terminals and including a common control node with a capacitance between the common control node and an intermediate point. A control circuit includes first and second circuits configured to charge and discharge the capacitance as a function of first and second control signals. The control circuit includes a third circuit having a plurality of diodes and a switch that operates when the voltage at the capacitance is greater than a threshold two diodes in cascade between the intermediate point and the common control node to enable current flow from the intermediate point to the common control node. When the voltage at the capacitance is smaller than the given threshold two diodes are connected in series between the common control node and the intermediate point to enable current flow from the common control node to the intermediate point.
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公开(公告)号：US20170310320A1
公开(公告)日：2017-10-26
申请号：US15193600
申请日：2016-06-27
发明人： Valeria Bottarel , Sandro Rossi
IPC分类号： H03K17/687 , A61B8/00 , H03K5/08 , H03K17/74
CPC分类号： H03K17/687 , A61B8/4494 , H03K5/08 , H03K17/6874 , H03K17/74
摘要： Switching circuitry includes first and second transistors in series between two terminals and including a common control node with a capacitance between the common control node and an intermediate point. A control circuit includes first and second circuits configured to charge and discharge the capacitance as a function of first and second control signals. The control circuit includes a third circuit having a plurality of diodes and a switch that operates when the voltage at the capacitance is greater than a threshold two diodes in cascade between the intermediate point and the common control node to enable current flow from the intermediate point to the common control node. When the voltage at the capacitance is smaller than the given threshold two diodes are connected in series between the common control node and the intermediate point to enable current flow from the common control node to the intermediate point.
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公开(公告)号：US20160204778A1
公开(公告)日：2016-07-14
申请号：US15076211
申请日：2016-03-21
IPC分类号： H03K17/16
CPC分类号： G05F3/02 , B06B1/0215 , H03K4/94 , H03K17/162
摘要： A transmission channel transmits high-voltage pulses and receives echos of the high-voltage pulses. The transmission channel includes a current generator circuit, which generates current-integrator drive currents. The control circuitry generates one or more control signals to control generation of current-integrator drive currents by the current generator circuit during transducer-driving periods. A current integrator integrates current-integrator drive currents generated by current generator circuit to generate transducer drive signals.
摘要翻译： 传输通道传输高电压脉冲并接收高电压脉冲的回波。 传输通道包括产生电流积分器驱动电流的电流发生器电路。 控制电路产生一个或多个控制信号，以在换能器驱动期间通过电流发生器电路来控制电流积分器驱动电流的产生。 电流积分器集成了由电流发生器电路产生的电流积分器驱动电流以产生换能器驱动信号。
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6.发明授权Circuit and method for adjusting the electric power supply of an energy-scavenging system 有权用于调节能量清除系统的电力供应的电路和方法公开(公告)号：US09209763B2
公开(公告)日：2015-12-08
申请号：US14052495
申请日：2013-10-11
发明人： Valeria Bottarel , Giulio Ricotti , Sandro Rossi
CPC分类号： H03F3/45076 , H02M2001/0006 , H02N2/181
摘要： A differentiator generates a time derivative signal from a time-variable signal. A transconductance amplifier generates a biasing control signal as a function of the time derivative signal. A supply network functions to supply the differentiator and transconductance amplifier. The supply network is driven by the biasing control signal output from the transconductance amplifier. With this configuration, speed of operation of the differentiator and transconductance amplifier vary with the supply provided by the supply network, and the supply is modulated as a function of the received time-variable signal.
摘要翻译： 微分器从时间变量信号产生时间导数信号。 跨导放大器产生作为时间导数信号的函数的偏置控制信号。 供电网络用于提供微分器和跨导放大器。 供电网络由跨导放大器输出的偏置控制信号驱动。 利用这种配置，微分器和跨导放大器的操作速度随着供电网络的供给而变化，并且电源根据接收到的时间变量信号进行调制。
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公开(公告)号：US11888397B2
公开(公告)日：2024-01-30
申请号：US17531024
申请日：2021-11-19
CPC分类号： H02M3/158 , H02M1/0009
摘要： A DC-DC switching converter includes power switches selectively coupling an output terminal with a first voltage or with a second voltage. A driver stage is coupled with the power switches for driving the power switches. A driver control stage is coupled with the driver stage for controlling the operation of the driver stage. An output current sensing circuit is coupled with the output terminal and with the driver control stage, and is configured to sense a sign of an output current delivered by the DC-DC switching converter at the output terminal and to generate control signals for the driver control stage. The driver control stage controls the operation of the driver stage according to states of the control signals received from the output current sensing circuit, for selectively delaying the activation of the power switches depending on the sensed sign of the output current.
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公开(公告)号：US20220166321A1
公开(公告)日：2022-05-26
申请号：US17532867
申请日：2021-11-22
IPC分类号： H02M3/158 , H02M1/08 , H02M1/00 , H03K17/687
摘要： In an embodiment, a switching converter includes: a switching stage configured to receive a direct current input voltage, receive a driving signal for driving the switching stage, and provide a direct current output voltage according to the input voltage and the driving signal; a driving stage configured to provide the driving signal to the switching stage; a current sensing circuit configure to sense an output current provided by the switching stage; and a voltage generation circuit configured to generate at least one supply voltage for powering the driving stage, and adjust the at least one supply voltage according to the output current.
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公开(公告)号：US20220166320A1
公开(公告)日：2022-05-26
申请号：US17532833
申请日：2021-11-22
摘要： In an embodiment, a switching converter includes: a switching stage including first and second switching devices for receiving an input voltage and for providing an output voltage; a driving stage including first and second driving devices for driving the first and second switching devices, respectively; a current sensing arrangement for sensing an output current provided by the switching stage; a voltage generation arrangement configured to generate a supply voltage for powering the driving stage, the voltage generation arrangement being configured to adjust the supply voltage according to the sensed output current; and a charge recovery stage configured to store a first electric charge being lost from the first driving device during driving of the first switching device and to release at least partially the stored first electric charge to the second driving device during driving of the second switching device.
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公开(公告)号：US10730073B2
公开(公告)日：2020-08-04
申请号：US15691292
申请日：2017-08-30
发明人： Davide Ugo Ghisu , Sandro Rossi , Andrea Gambero
摘要： A circuit for an ultrasonic channel has a first and a second terminal between which extend a resistive and diode signal paths including a pair of diodes with opposing polarities, for example in anti-parallel. Switching circuitry is coupled with the resistive and diode signal paths and is switchable between first and second states. In the first state, the first and the second terminals are coupled with one another via the resistive signal path. In the second state, the first and the second terminals are coupled with one another via the diode signal path. The switching circuitry includes first and second transistor discharge circuits coupled between first and second drive lines and current paths of these transistors, and coupled to control terminals of these transistors. The control terminals are coupled to the first or second drive line and are non-conductive and conductive in first and second operating states, respectively.
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