Abstract: An integrated circuit is built with enhancement mode Gallium Nitride (GaN) components. The integrated circuit comprises a comparator circuit which compares an input voltage with a reference voltage to provide a controllable constant current source, the comparator having a drive transistor having a positive threshold voltage, the drive transistor being switched on and off based on a comparison result of the comparator. The circuit may drive ring oscillators and may provide pulse width modulation with variable duty cycle at constant frequency.

Abstract: An electronic circuit unit includes a trigger circuit and a circuit module. The trigger circuit includes a semiconductor switching element configured to output a switching pulse signal in response to an external trigger signal, a load resistor for the semiconductor switching element, a one-shot pulse circuit configured to convert the switching pulse signal into a one-shot pulse with a predetermined pulse width, and a forcible-reset circuit connected to an input side of the semiconductor switching element. The one-shot pulse circuit includes a coupling capacitor connected to an input side of the semiconductor switching element and a charging resistor for the coupling capacitor. The pulse width of the one-shot pulse is determined by a time constant of the coupling capacitor and the charging resistor. The forcible-reset circuit is configured to temporarily input an on-voltage to the semiconductor switching element so as to forcibly switch the circuit module to the operating mode.

Abstract: A classification circuit generates first information for classifying an operating state of a power semiconductor element into one of a plurality of predetermined operating regions. A selector circuit generates second information for selecting a plurality of modes with different switching speeds, based on a user input. A characteristic control circuit stores a drive adjustment signal in advance for each of combinations of the operating regions and the modes and outputs the drive adjustment signal in a combination of one operating region and one mode that is selected in accordance with the first information and the second information. A gate drive circuit charges/discharges a gate at a charge rate and a discharge rate variably set in accordance with the drive adjustment signal from the characteristic control circuit, at the time of on/off of the power semiconductor element.

Abstract: Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Abstract: The present disclosure provide techniques for communicating energy request reports and energy reports. A method includes sending an energy request indication in an energy request occasion, the energy request indication indicating a request for a user equipment (UE) to send an energy request report to the network node. The method further includes sending the energy request report, the energy request report indicating a request for a network node to transmit power to the UE or a request for time for the UE to harvest energy. The method further includes sending an energy report indication in an energy report occasion, the energy report indication indicating a request for the UE to send an energy report to the network node. The method further includes sending the energy report, the energy report indicating to the network node at least one communication capability of the UE based on an energy level of the UE.

Abstract: An oscillator comprising, a cavity wherein the cavity comprises an electrical conductor. The oscillator comprising an electrical insulator disposed on a surface of the cavity; and a heterostructure disposed on a surface of the electrical insulator and having a first end and a second end, the heterostructure comprising one or more spin current source layers and one or more magnetic material layers. In response to an electrical current passed through the spin current source, an oscillation occurs in a plurality of magnetic domains of the magnetic material, wherein the oscillations have substantially the same phase.

Abstract: Systems and methods are disclosed for wide frequency range voltage controlled oscillators. For example, an apparatus includes a Voltage Controlled Oscillator (VCO) including a delay cell which includes first and second current sources provided in parallel with one another. The first current source is controlled by a voltage control input connected to a voltage control terminal and the second current source is controlled by a bias voltage input connected to a bias voltage terminal. The first current source provides an alternate current path in the delay cell when the second current source is off. The delay cell is operable to receive an input and produce an output using the alternate current path.

Abstract: A method for protecting a system including a driver integrated circuit includes receiving a driver input signal. The method includes driving an output signal externally to the driver integrated circuit. The output signal is driven based on the driver input signal and an indication of a delay between receipt of an edge of the driver input signal and arrival of a corresponding edge of the output signal at an output node coupled to a terminal of the driver integrated circuit.

Abstract: A time delay circuit comprising a plurality of differential delay cells each having a respective time delay and being arranged in series. Each delay cell comprises first and second inverter sub-cells, each comprising a respective PMOS transistor and an NMOS transistor arranged in series such that their respective drain terminals are connected at a drain node. Each of the transistors has a back-gate terminal and is arranged such that a respective voltage applied to said back-gate terminal linearly controls its respective threshold voltage. The back-gate terminal of the PMOS transistor in each inverter sub-cell is connected to the drain node of the other sub-cell and/or the back-gate terminal of the NMOS transistor in each inverter sub-cell is connected to the drain node of the other sub-cell. A control signal varies the time delay of the delay cell by adjusting a voltage supplied to a back-gate terminal of a transistor.

Abstract: An electronic circuit for uniform distribution of a current includes: a first MOSFET and a second MOSFET, wherein the first MOSFET and the second MOSFET are connected in parallel in order to distribute a current applied to an input terminal, the current flowing towards an output terminal of the electronic circuit, wherein the input terminal is respectively connected to a drain terminal of the first MOSFET and to a drain terminal of the second MOSFET; and a terminal for a control voltage, wherein the control voltage is applied to a gate terminal of the first MOSFET and to a gate terminal of the second MOSFET. The first MOSFET comprises a first resistor at the gate terminal of the first MOSFET, and the second MOSFET comprises a second resistor at the gate terminal of the second MOSFET.

Abstract: In one aspect, a fuel cell power system is provided. The fuel cell power system includes a ring bus, a plurality of bidirectional uninterruptible power supplies (UPSs), a plurality of direct current (DC) fuel cell modules, and a plurality of bidirectional direct current to alternating current (DC-AC) power converters. Each of the plurality of UPSs is electrically coupled to at least one battery, an AC utility feed, a load, and via a choke, the ring bus. Each of the plurality of DC fuel cell modules includes one or more fuel cells coupled to a hydrogen storage. Each of the plurality of bidirectional DC-AC power converters is electrically coupled to a corresponding one of the plurality of DC fuel cell modules and a corresponding one of the plurality of bidirectional UPSs at the AC utility feed.

Abstract: A switch circuit, a mixer, and an electronic device, where the switch circuit includes a first metal oxide semiconductor (MOS) transistor, a second MOS transistor, a third MOS transistor, and a fourth MOS transistor, both a gate of the first MOS transistor and a gate of the fourth MOS transistor are connected to a first port, and both a gate of the second MOS transistor and a gate of the third MOS transistor are connected to a second port; and a lead between the gate of the first MOS transistor and the first port, a lead between the gate of the second MOS transistor and the second port, a lead between the gate of the third MOS transistor and the second port, and a lead between the gate of the fourth MOS transistor and the first port all have an equal length. In this way, linearity is relatively high.

Abstract: In one aspect, an apparatus includes an oscillator to generate a clock signal, where the oscillator includes: at least one resistor; at least one capacitor; and a circuit coupled to the at least one resistor and the at least one capacitor, the circuit to generate the clock signal. The apparatus further includes a voltage regulator coupled to the oscillator to provide a regulated voltage to the oscillator, and a bulk voltage generator coupled to the voltage regulator. The bulk voltage generator may provide first and second bulk voltages to the voltage regulator to provide temperature compensation to the oscillator.

Abstract: A driving circuit comprises a first capacitor. During a sampling operation, the first capacitor is coupled between a first and a second input terminals. During a transferring operation, an end of the first capacitor receives a voltage and another end of the first capacitor is coupled to a load. The driving circuit produces a first driving signal to drive the load, the first driving signal comprises a plurality of first portions with a first polarity and a plurality of second portions with a second polarity opposite to the first polarity. The plurality of first portions and the plurality of second portions form a generalized DSB-SC modulated component of the first driving signal, which is modulated according to an input signal between the first input terminal and the second input terminal.

Abstract: An apparatus for analyzing currents in an electric load is provided with a current measuring circuit, which can be connected in series with the parallel circuit of the load branches, and a detector for detecting a change in the current when the switching element in a load branch is switched on or off. The apparatus also has an analysis unit which is connected to the control unit and to the detector and analyzes the temporal correlation of a control signal for switching a switching element in a load branch on or off with the detection of the change in the current and/or analyzes the change in the current at a plurality of times of switching a relevant switching element in a load branch or the switching elements in a plurality of load branches.

Abstract: A testing system includes a testing device including a display screen. The testing device can display, via the display screen, a representation of a vehicle and oscillators of the vehicle. The testing device transmits a test request that identifies a selected oscillator of the plurality of oscillators for testing. A vehicle receives the test request. An electronic control unit of the vehicle instructs the selected oscillator to generate test signals. The testing calculates a performance metric of the test signals. The testing device determines whether the selected oscillator is properly placed, functioning at a predetermined threshold, or both. Improperly placed or improperly functioning oscillators can be adjusted or replaced.

Abstract: A voltage-controlled oscillator in a phase-locked loop circuit is calibrated via a dichotomous search in a set of candidate frequency bands via a sequence of subsequent halving steps that produce reduced subsets of the set of candidate frequency bands. The reduced subsets have respective upper bound values and lower bound values, as well as central values. The central value of the subset resulting from the halving step of index i in the sequence is a function of the average of the upper bound value and the lower bound value of the subset resulting from the halving step of index i?1 in the sequence.

Abstract: A circuit board includes: a semiconductor substrate including a first surface and a second surface located at an opposite side from the first surface; a circuit provided at a first surface side; a first external electrode provided at a second surface side; a heater provided at the second surface side; and a plurality of through electrodes penetrating the first surface and the second surface and electrically coupling the circuit and the first external electrode or the heater. The heater and the first external electrode do not overlap each other in a plan view.

Abstract: A wireless power reception device according to an embodiment of the present specification comprises a controller for: receiving wireless power from a wireless power transmission device, and performing power pickup for receiving the wireless power from the wireless power transmission device by magnetic coupling with the wireless power transmission device at an operating frequency; and communicating with the wireless power transmission device by using at least one of in-band communication using the operating frequency and out-band communication using a frequency other than the operating frequency, and controlling reception of the wireless power, wherein, in the power transmission step of receiving the wireless power, the controller transmits or receives, using the in-band communication, a message for controlling the wireless power, and transmits or receives, using the out-band communication, an authentication message for authentication of the wireless power transmission device.

Abstract: A power switch device includes a first terminal intended to be connected to a source of a first supply potential, a second terminal configured to supply a second potential, and a third terminal intended to be connected to a second source of a third supply potential. The device includes a first PMOS transistor having a source connected to the second terminal and a drain connected to the third terminal, a second PMOS transistor having a source connected to the second terminal, and a third PMOS transistor having a source connected to the first terminal and a drain connected to the drain of the second transistor. A control circuit generates gate control signals to control operation of the first, second and third PMOS transistors dependent on the first, second, and third supply potentials.