Abstract: In one general aspect, a level-shifting circuit includes a first supply terminal configured to receive a first supply voltage, and a second supply terminal configured to receive a second supply voltage different from the first supply voltage. The level-shifting circuit includes a shifting circuit having electrical connections to an input terminal and an output terminal and configured to, in response to a first voltage at a first node, produce a second voltage at a second node. The shifting circuit is used to shift a first voltage level to a second voltage level. The level-shifting circuit includes a clamping circuit having an electrical connection to the first node where the clamping circuit is configured to limit current at the first node from flowing to a ground.

Abstract: A compensation device for compensating PVT variations of an analog and/or digital circuit. The compensation device includes a transistor having a first terminal, a second terminal, a third terminal, and a fourth terminal allowing to modify a threshold voltage of the transistor. The transistor is configured to be in saturation region. The voltage at the third terminal has a predetermined value and the difference between the voltage at the second terminal and the voltage at the third terminal has a predetermined value. A current generation module is configured to generate a current of a predetermined value. A compensation module is configured to force this current to flow between the first terminal and the third terminal by adjusting the voltage of the fourth terminal.

Abstract: A foreign object detection device for a wireless power transfer system includes a storage unit that stores first coil device information including a shape and a size of a first coil facing surface, a height position from the reference surface, and a height position of a first device facing surface; an information acquiring unit that acquires second coil device information including a shape, a size, and a height position of a second coil facing surface, and a height position of a second device facing surface; a region identifying unit that identifies a magnetic field generation region generated between the first device facing surface and the second device facing surface during power feeding, based on the first coil device information and the second coil device information; and a foreign object detection unit that detects the presence or absence of a foreign object within the identified magnetic field generation region.

Abstract: A system and method for fast converging gain calibration for phase lock loops (PLL) are herein disclosed. According to one embodiment, a method includes receiving, with a voltage generation circuit, an input value representing a difference between a sampled voltage and a reference voltage, and adjusting, with the voltage generation circuit, the reference voltage by generating a voltage output based on the difference represented by the input value.

Abstract: A power conversion device, that includes a drive circuit 11a that drives a switching element 4 included in an upper-arm for one of three phases, a drive circuit 11b that drives a switching element 5 included in a lower-arm for the one phase, and a control circuit 9 that transmits a control signal to the drive circuits 11a, 11b, is provided. The power conversion device includes power supply circuits 12a, 12b that provide power to the drive circuits 11a, 11b, respectively, a low-voltage power supply 6 that supplies power to one of the power supply circuits, 12a, and a high-voltage power supply 1 that supplies power to the other of the power supply circuits, 12b. Accordingly, it is possible to reliably protect a system: by realizing minimal redundancy of the power supply, the power supply generation circuit, etc.; and by realizing the short-circuit mode at the time of error occurrence.

Abstract: A wireless power transmitter, a power transmission system and a method for driving a wireless power transmitter are disclosed. In an embodiment, a wireless power transmitter includes an inverter, an impedance circuit, an inductance circuit including a first transmission coil and a second transmission coil and a switch circuit, wherein the impedance circuit and the inductance circuit are configured to establish a resonance circuit, wherein the inverter is configured to provide AC power to the resonance circuit, and wherein the switch circuit is configured to couple the first transmission coil and/or the second transmission coil to the impedance circuit to change a resonance frequency of the resonance circuit and to keep a frequency of the AC power within a prescribed range.

Abstract: An operation method of a signal receiver includes sequentially receiving 0-th and first bits through one signal line, and adjusting a width of any one of a first high duration and a first low duration of a first signal corresponding to the first bit, based on values of the 0-th and first bits, when the values of the 0-th and first bits are identical to each other.

Abstract: A transistor, e.g., field effect transistor FET, ringing adjustment circuit and method comprising the measuring of a voltage from a transistor (e.g., a node of a FET) during the transistor turning on and turning off, determining the voltage oscillation in the measured voltage by performing a derivative function on the measured voltage and detecting a switch in a voltage change rate from positive to negative or negative to positive, and comparing the voltage change rate after the detected switch to adjust drive current applied to the transistor to optimize efficiency while minimizing voltage oscillation and ringing.

Abstract: To suppress the generation of a shoot-through current in a Schmitt trigger inverter circuit, a Schmitt trigger inverter circuit SINVa includes: a CMOS inverter CI having the input and output connected to the input and output of the Schmitt trigger inverter circuit, respectively; a first transistor MN3 having the gate connected to the output of the CMOS inverter; and a first current limiting element DEP1 connected to the first transistor in series.

Abstract: A power system has a wireless power transmitting device and a wireless power receiving device. Coils in the power transmitting and receiving devices are used to transmit and receive wireless power signals. The coils may include pot core coils, figure eight coils, solenoids, and other coils. A solenoid array may extend under a charging surface in a wireless power transmitting device. Solenoids in the array may be separated from each other by small gaps. Solenoids may have rectangular outlines, hexagonal outlines, or other shapes. Pot core coils may have a magnetic material with a circular groove of a groove of other suitable shapes that contains wire windings. Figure eight coils may have first and second adjacent magnetic cores with respective counterclockwise and clockwise wire windings. Magnets and other alignment structures can be used to help align coils in transmitting and receiving devices.

Abstract: A DC transmission system transmits AC power generated by a generator to an AC distribution grid and a DC distribution grid using DC power. The DC transmission system includes an AC/DC converter, a DC/DC converter, and a DC/AC converter. The AC/DC converter outputs DC power by converting AC power from the generator. The DC/DC converter boosts a first voltage of the DC power outputted from the AC/DC converter, into a second voltage. The DC/AC converter outputs, to the AC distribution grid, AC power by converting the DC power outputted from the DC/DC converter. When the second voltage changes, the DC/DC converter controls the first voltage in response to the change in the second voltage.

Abstract: A sensing circuit includes a signal source circuit and a transient circuit. The signal source circuit provides a signal to the sensor via a conductor. When the sensor is exposed to a condition and is receiving the signal, an electrical characteristic of the sensor affects the signal, which is interpreted by the signal source circuit. When the sensing circuit is in a noisy environment, transient noise couples with the signal to produce a noisy signal. The transient circuit compares the noisy signal with a representation of the noisy signal. When the noisy signal compares unfavorably with the representation of the noisy signal, the transient circuit supplies a compensation signal to the conductor. The level of the compensation signal corresponds to a level at which the noisy signal compares unfavorably with the representation of the noisy signal.

Abstract: A front-end circuit includes a first filter on a path connecting a common terminal and a first input/output terminal, a second filter on a path connecting the common terminal and a second input/output terminal, and a first switch on the path connecting the common terminal and the first input/output terminal. The first switch receives at least one of a first control signal and a second control signal. The first control signal increases a difference between a first voltage applied to the first switch to turn the first switch to a non-conductive state and a threshold voltage determining whether or not the first switch is turned to a conductive state. The second control signal increases a difference between a second voltage applied to the first switch to turn the first switch to the conductive state and the threshold voltage.

Abstract: A voltage generating circuit, a semiconductor memory device, and a voltage generating method are provided. The voltage generating circuit includes: an oscillation signal generating part generating an oscillation signal that alternately repeats a state of a first voltage and a state of a second voltage; a capacitor having one end receiving the oscillation signal and an other end connected to an output node; a switch element receiving a control voltage and set to an on state or an off state according to the control voltage, and applying the first voltage to the output node when set to the on state; and a switch control part supplying, as the control voltage to the switch element, the second voltage when the oscillation signal is in the state of the first voltage, and a voltage of the output node when the oscillation signal is in the state of the second voltage.

Abstract: A supply and control unit for electrical devices (7, 8, 9) of a production system comprising at least one host power supply and control device (1) being connected via a power and data transfer cable equipment (2) with said electrical devices (7, 8, 9) comprising power supply input ports (4, 5, 6), and at least one control and actuating device (3) arranged in situ with said electrical devices (7, 8, 9) to control an operational mode of said electrical devices (7, 8, 9) by carrying out a control command received from the host device (1) characterized in that at least one additional power source device (10) is arranged in situ with the electrical devices (7, 8, 9) comprising at least one flywheel energy storage being charged during charging periods linked to control commands that the operational mode of at least one electrical device (7, 8, 9) is to be started and being discharged to increase the power supply at input ports (4, 5, 6) of the electrical devices (7, 8, 9) that are being switched into the operationa

Abstract: A system and method for fast converging reference clock duty cycle correction for a digital to time converter (DTC) based analog fractional-N phase-locked loop (PLL) are herein disclosed. According to one embodiment, an electronic circuit includes a clock doubler, a comparator that outputs a value representing a difference between a voltage at a voltage-to-current (Gm) circuit and a reference voltage that is adjusted to compensate for an offset of the comparator, and a duty cycle calibration circuit that receives the value output from the comparator and adjusts a duty cycle of the PLL by extracting an error from the value output from the comparator and delaying a clock edge of the duty cycle according to the extracted error.

Abstract: A gate drive circuit has a capacitor and a gate drive voltage source connected in series with a gate terminal of a voltage-driven switching device. The gate drive source voltage feeds, as a gate drive voltage, a voltage higher than the sum of the voltage applied to a gate-source parasitic capacitance of the switching device when the switching device is in a steady ON state and the voltage applied to, of any circuit component interposed between the gate drive voltage source and the gate terminal of the switching device, a circuit component other than the capacitor (such as an upper transistor forming the output stage of the driver). No other circuit component (such as a resistor connected in parallel with the capacitor) is essential but the capacitor as the sole circuit component to be directly connected to the gate terminal of the switching device.

Abstract: A method of electrically powering an electrical load in an aircraft, the method including electrically powering the electrical load with a main source that generates electricity; measuring an instantaneous parameter characterizing the main source; determining a level of use of the main source from the measured instantaneous parameter; adjusting the voltage of the main source as a function of the level of use; measuring an output voltage from the main source; comparing the measured voltage or the level of use with a predetermined threshold value; and whenever the measured voltage is less than the predetermined threshold value, electrically powering the electrical load from an auxiliary source that stores electricity so as to supply additional electric power to the electrical load.

Abstract: A duplexer is disclosed. In an embodiment, the duplexer includes a Tx filter and an Rx filter, wherein the Tx filter includes first series-interconnected basic elements, each first basic element having a first electroacoustic resonator and first impedance converters interconnected in series between the first basic elements, wherein the Rx filter comprises second series-interconnected basic elements, each second basic element having a second electroacoustic resonator and second impedance converters interconnected in series between the second basic elements, wherein the first impedance converters in the Tx filter are impedance inverters, wherein the first resonators of the first basic elements in the Tx filter are only series resonators, wherein the second impedance converters in the Rx filter are admittance inverters, and wherein the second resonators of the second basic elements in the Rx filter are only parallel resonators.

Abstract: In a backup device, a determination unit determines a first target voltage value of a second power supply unit when a starter switch for starting a vehicle is in an OFF state, so as to be lower than a second target voltage value of the second power supply unit when the starter switch is in an ON state, based on the second target voltage value, a value indicating the charging capability of the charging circuit, and a predetermined time limit. A control unit causes the charging circuit to perform the charging operation upon the starter switch being switched to an ON state, such that the charged voltage of the second power supply unit reaches the second target voltage value, and causes the discharging circuit to perform the discharging operation upon the starter switch being switched to an OFF state, such that the charged voltage reaches the first target voltage value.