Abstract: The present invention provides a high efficiency power circuit. It includes an input transistor having a negative-threshold coupled to a voltage source for providing a supply voltage to the output terminal of the power circuit. An input detection circuit is coupled to the voltage source to generate a control signal when the voltage level of the voltage source is higher than a threshold voltage. A second transistor is coupled to the input detection circuit to turn off the input transistor in response to the control signal. An output detection circuit is connected to the supply voltage to generate a first enable signal when the voltage level of the supply voltage is higher than an output-over-voltage threshold. The first enable signal is used to switch off the input transistor. The output detection circuit generates a second enable signal when the voltage level of the supply voltage is lower than an output-under-voltage threshold. The second enable signal is used to turn off the output of the power circuit.

Abstract: A control method implemented in a power converter, such as a variable speed drive, is disclosed. This control method is designed to make the power converter operate when the latter is connected to the network in single-phase mode. The power converter includes a controlled current source connected in series to its DC power supply bus. This controlled current source includes an electronic converter provided with two controlled switching arms. The switching arms are controlled by alternating a modulation phase with a saturation phase, the saturation phase being applied for a determined duration ? in order to make the power converter operate in discontinuous mode.

Abstract: A power cable includes: a conductor layer including an inner conductor core, and an outer conductor core that surrounds the inner conductor core and that is made of copper-clad aluminum; an insulator layer that covers the conductor layer; and an outer sheath layer that covers the insulator layer.

Abstract: A power conversion system with zero-voltage start-up mechanism and a zero-voltage start-up device are disclosed. The system includes a power conversion circuit, a power factor correction unit, a storage capacitor, a storage switching unit, and a zero-voltage detection module. The storage switching unit is serially connected with the storage capacitor, and particularly controlled by the zero-voltage detection module. The zero-voltage detection module detects a timing as an input voltage is at low level, and then outputs a control signal to turn on the storage switching unit. Therefore, the present invention assures that the power conversion system is turned on when the input voltage is at the low level, in order to suppress the system from a surge current.

Abstract: A cascaded electric power converter and a method of operating a cascaded electric power converter are disclosed. The cascaded converter includes: a converter cell including a cell capacitor and at least one phase leg having at least two electric valves, the at least one phase leg being connected in parallel to the cell capacitor; and a control system for controlling the switching of the electric valves of the at least one phase leg. The control system is configured to, upon detection of a need to by-pass the converter cell, control the switching of the electric valves in a manner so that the cell capacitor is short circuited via a phase leg, so as to obtain a current surge through the phase leg, thereby creating a permanent current path through the converter cell.

Abstract: An alternating current-to-direct current (AC-DC) converter is provided. The converter may include a transformer having a primary side and a secondary side. A first bi-directional switch and a first inductor may be connected in series between a positive terminal of an AC source and a first terminal of the primary side of the transformer. A second bi-directional switch and a second inductor may be connected between the positive terminal of the AC source and a second terminal of the primary side of the transformer and connected in parallel with the first bi-directional switch.

Abstract: An increase in a ripple voltage of a capacitor in a smoothing circuit is prevented to achieve a compact capacitor and cost reduction for capacitors in an electric power supply circuit which performs PAM control using a switching element. An electric power supply circuit includes a bridge circuit for rectifying alternating current power, a smoothing circuit which has two capacitors serially connected to each other, and a PAM control section for turning a switching element on and off at a predetermined timing. The PAM control section includes a phase difference detection section which detects a phase shift of a PAM waveform based on a change in a voltage difference between the two capacitors, and a phase correction section which corrects the phase of the PAM waveform so that an input current has a sine waveform.

Abstract: A power converter includes at least two power conversion sections operating in parallel. The power converter receives a variable input power and generates an AC output voltage. When the power source is generating enough power to supply a DC voltage to the power converter greater than or equal to the peak magnitude of the desired AC voltage output, each power conversion section operates in parallel, converting the DC voltage to the desired AC voltage output. When the power generated by the variable power source results in a DC voltage having a magnitude less than the peak magnitude of the desired AC voltage output, the power conversion sections operate in series. One power conversion section operates as a boost converter to boost the DC voltage level to a suitable level for the second power conversion section, which generates the desired AC output voltage.

Abstract: New utility of an existing class of DC galvanically isolated current sourcing circuit topologies for power conversion simultaneously allows improvement in its secondary circuit(s) to power conversion efficiency and reduction in working voltage magnitudes, or simply reduction in working voltage magnitudes, with resulting benefits for reduction in manufacturing cost, reduction in size and weight, and increase in market acceptance, or may simply allow secondary circuit(s) to enable easier provisioning of safety, improvement in reliability, or improvement in efficiency. The magnitude of DC output voltage is optimized at higher value for greater efficiency, while simultaneously optimizing the secondary circuit's working voltage maximum magnitude at a lower value for greater safety. The method requires full cycle current-compliant input impedance of the secondary power source whereby the secondary of the DC galvanically isolating device behaves in a mode of being a full cycle voltage-compliant current source.

Abstract: Provided is an analog digital converting device which consumes a low power and guarantees fast operation characteristic. The analog digital converting device includes a sub-ADC and a successive approximation ADC. The sub-ADC converts an external analog signal into a first digital signal by using first and second reference voltages. The successive approximation ADC comprises a plurality of bit streams, and converts the external analog signal into a second digital signal according to a successive approximation operation using the first and second reference voltages. The successive approximation ADC receives the first digital signal, and converts the second digital signal in a state where one of the first and second reference voltages has been applied to the bit streams based on the first digital signal.

Abstract: A substation has a converter comprising a first set (S1) of series connected converter valve elements provided between a first (V1) and a second (V2) potential, where the absolute value of the second potential is higher than the absolute value of the first potential, and a second set (S2) of converter valve elements, comprising at least one converter valve element, provided between the second and a third potential (V3), where the absolute value of the third potential is higher than the absolute value of the second potential and all converter valve elements of the second set are placed inside one or more casings (28) placed on elongated post-like insulation (24), where the potential of the end of the post-like insulation on which the casings are placed is in a range between the second and the third potential, while the other end of the post like insulation is at ground potential.

Abstract: A power supply apparatus, an apparatus, and a method of supplying power are provided. The power supply apparatus including a high voltage generating unit, which generates one or more output voltages by using an input voltage, and which is implemented as a chip. The one or more output terminals are on a same circuit board as the high voltage generating unit, to output the generated one or more output voltages. The chip includes a transforming unit to transform the input voltage into one or more transformed voltages that are different from one another, and a rectifying unit to rectify the transformed voltages into rectified voltages, and to determine the rectified voltages as the generated one or more output voltages.

Abstract: A converter utilizing synchronous rectification comprises a first switch, a second switch connected in series to the first switch, and a gate drive circuit controlling each switch to switch to on/off-state using pulse-width modulation. Each switch includes a channel region that is conductive in both forward and reverse directions in on-state and is not conductive in the forward direction in off-state, and a unipolar diode region conductive only in the reverse direction. The gate drive circuit synchronizes output timing for signal with which the first switch switches to on-state with output timing for signal with which the second switch switches to off-state, and synchronizes output timing for signal with which the first switch switches to off-state with output timing for signal with which the second switch switches to on-state.

Abstract: In the method for closed-loop control of at least two converters in an energy transmission and/or distribution system, each rectifier regulator and each inverter regulator provides a differential DC voltage from the difference between a given set DC voltage and the relevant received measured DC voltage, and also provides a differential DC current from a differential DC current from the difference between a set DC current and the corresponding received measured DC current. Each converter is a self-commutated converter with power semiconductors. The rectifier regulation of the provided converter is regulated such that the sum of the product of the differential voltages and the value of given set DC current at the corresponding rectifier and the differential current is a minimum. The inverter regulation regulates the corresponding inverter such that the sum between the differential voltage and the differential current is a minimum.

Abstract: A high voltage AC/DC or DC/AC power conversion system including a voltage source converter with at least two series-connected converter valve bridges, at least two reactors, where each of the reactors is connected to one of the AC phase terminals of the at least two bridges and at least one transformer connected to an AC supply voltage. In order to block a DC voltage from the at least one transformer, one of at least two capacitors is connected in series with each of the at least two reactors and is connected between the corresponding reactor and the at least one transformer.

Abstract: There is provided a power supply apparatus supplying driving power. The power supply apparatus includes: a first power converter bypassing input power when a voltage level of the input power having a predetermined voltage level is within a reference voltage level range, and converting the input power to DC power having a preset voltage level when the voltage level of the input power is outside of the reference voltage level range; and a second power converter converting the power inputted from the first power converter to driving power having a preset voltage level.

Abstract: A near field RF communicator has an antenna circuit (1020 coupled to an active switched rectifier (301) to rectify a received RF magnetic field signal. The active switched rectifier also has a passive mode of operation. A switching mechanism in the forward conducting arms of the rectifier is controlled by a comparator (309). A switching mechanism to control ground clamping of each respective input from the antenna circuit is provided by a coupling to the other respective input from the antenna circuit.

Abstract: A power supply receives an alternating current input that is rectified by a rectifier. The rectified output voltage is coupled to a load and a microprocessor during both a run mode operation and a standby mode operation. The rectifier provides synchronous rectification by an included MOSFET, during the run mode operation and non-synchronous rectification during the standby mode operation by an included Schottky diode. The Schottky diode in rectifier is in parallel with the MOSFET and provides rectification during the standby mode operation. A source of an on/off control signal from the microprocessor is applied to the load for changing the operation mode and applied, in parallel, to the rectifier for disabling the synchronous rectification in the rectifier, during the standby mode operation. The efficiency of the power supply is improved in the standby mode operation by elimination of the power consumed to energize a synchronous rectifier controller.

Abstract: The configurations of a compensation device configured in a circuit having a synchronous rectifier (SR), a controller and a load, and a compensation method thereof are provided in the present invention. In the proposed circuit, the SR includes a first terminal, a first inductor electrically connected to the first terminal in series, a second terminal and a second inductor electrically connected to the second terminal in series, the controller is coupled to the first and the second inductors, and the device includes a voltage source having a positive terminal coupled to the controller and a negative terminal coupled to the second inductor and providing a compensation voltage to reduce or eliminate the influence of the first and the second inductors towards a voltage value across the first and the second terminals.

Abstract: A circuit includes an antenna terminal for generating a current through electromagnetic induction. The circuit also includes a rectifier for receiving the current and generating a rectified power supply voltage. In addition, the circuit includes a voltage clamp for sinking at least some of the current from the antenna terminal based on the rectified power supply voltage from the rectifier. The voltage clamp could include a control circuit (such as an N-channel transistor and a resistor) for controlling the sinking of at least some of the current from the antenna terminal. The voltage clamp could also include a sink circuit (such as an N-channel transistor) for sinking at least some of the current from the antenna terminal. The voltage clamp could further include a sink control circuit (such as a P-channel transistor and a resistor) for activating and deactivating the sink circuit based on operation of the control circuit.

Abstract: According to one example embodiment, a bridgeless boost power factor correction (PFC) system includes a first input for connection to a first line of an alternating current (AC) source and a second input for connection to a second line of the AC source. The PFC system includes an output for delivering an output of the bridgeless boost PFC system, a first boost choke coupled to the first input and a second boost choke coupled to the second input. A common mode choke is coupled between the first and second input and the first and second boost choke. A first X capacitor is coupled between the first input and the output and a second X capacitor coupled between the second input and the output.

Abstract: A system and method for converting a relatively high voltage into a relatively low voltage, the method comprising the steps of: receiving a first series of pulses at the relatively high voltage and a first frequency; and converting the first series of pulses into a second series of pulses at a second voltage lower than the relatively high voltage and a second frequency higher than the first frequency. The first series of pulses may be a waveform and the converting step may be triggered by the waveform of the first series of pulses exceeding the relatively low voltage. The first series of pulses may be direct current pulses and the receiving step may comprise receiving an alternating current voltage and rectifying the alternating current voltage into the first series of pulses. The second frequency may be some multiple of the first frequency, such as twice the first frequency.

Abstract: The adverse effect of noise a constant voltage receives in a semiconductor device capable of data communication through wireless communication is suppressed. Further, communication is performed normally with a constant voltage with less noise even in the case where the amount of received power is large. The semiconductor device includes an input circuit for generating a DC voltage from an AC signal, a circuit for generating a constant voltage lower than the DC voltage, a circuit portion supplied with the constant voltage, a filter, and a feedback circuit for changing impedance with the constant voltage input from the circuit for generating a constant voltage, wherein the filter is electrically connected between the input circuit and the circuit for generating a constant voltage.

Abstract: A device for controlling a plurality of electrical consumers to which a constant control current is applied at control nodes. A transformer unit to which a regulated and/or constant current having a predetermined frequency is applied at the input end comprises at least one first and a second winding at the output end which have a common tap, a first circuit branch forming a first control node for a first electrical consumer is associated with the first winding, and a second circuit branch forming a second control node for a second electrical consumer is associated with the second winding. Furthermore, the first and the second circuit branch each have a magnetically interacting pair of reactors which are wound in opposite directions relative to each other, and a first reactor of said pair is connected to the first control node via rectifying means, while a second reactor of the same pair is connected to the second control node via rectifying means.

Abstract: A PoE relay system includes a networking cable, a PoE power injector and a PoE access bridge device. The PoE power injector is coupled to a PoE powering apparatus to receive network data and network power, and to a power supply to receive DC power, and gathers the network data, the network power and the DC power in a gathered signal group. The PoE access bridge device is coupled to the electronic product, receives the gathered signal group, receives the DC power from the gathered signal group for operation, and separates the network data and the network power from each other, and outputs the network power to the electronic product.

Abstract: An electric power supply circuit includes a switching element (S) for causing a short-circuit for output power of a diode bridge circuit (12), a zero-cross detector section (5a) for detecting a point at which an input voltage reaches a level equal to or lower than a reference level, a timer section (5d) for starting a count upon the detection by the zero-cross detector section (5a), and a PAM waveform output section (5c) for causing the switching element (S) to perform switching with a predetermined output timing so that a waveform of the input current is caused to approximate to a sine wave. The circuit further includes a correction section (5e) for correcting, when a difference between a detection interval from detection to detection by the zero-cross detector section (5a), and an average value for detection intervals up to current detection occurs, an initial value of the count of the timer section (5d) according to the difference.

Abstract: A signal processing circuit includes an input inverter and an output inverter. Each inverter has a signal input for receiving an input rectangular signal, a signal output for providing an inverted output rectangular signal, and a pair of voltage outputs for developing a rectified dc output voltage. A first circuit input terminal is connected to the output of the input inverter and the input of the output inverter. A second circuit input terminal is connected to the input of the input inverter and the output of the output inverter, wherein the signal input terminals receive an input signal having a data component. A pair of supply voltage output terminals is connected to the voltage output terminals of the inverters for providing a rectified dc supply voltage output.

Abstract: An AC-DC converter, comprises: a first capacitor and a second capacitor; and a rectifier circuit connected to the first and second capacitor and operative to charge both the first and the second capacitor and to discharge the first capacitor independently of the second capacitor. The AC-DC converter circuit provides a rectified output voltage, and a duration of time that a current is drawn from the second capacitor is less than approximately 25% of a period of the rectified output voltage.

Abstract: Systems and methods described herein provide for high speed power factor correction which can overcome or substantially alleviate the problems associated with changes in the operating conditions of a load or other transient events. The present technology senses the present state conditions of a signal to quickly and accurately determine the presence of an overtone component within the signal. The expected value of the overtone component is then determined based on the sensed state of the signal. Power factor correction is then performed to suppress the overtone utilizing a control signal formed based on the expected value of the overtone. By performing power factor correction based on the expected value, the present technology can provide high speed power factor correction which is not limited by the delay introduced by an adaptive feedback loop.

Abstract: A switching control circuit includes an A/D converter that converts detection signals of an input voltage detection circuit, a current detection resistor, and an output voltage detection circuit into a digital signal, a D/A converter that provides a reference voltage to an analog comparator, a PWM circuit that outputs a control voltage to a switching element, and a CPU that provides a specified value to the D/A converter as a reference value, reads the values converted by the A/D converter, and obtains the average value of the inductor current. The CPU reads an inductor current Ib when the output of the PWM circuit is set at a high level, and obtains the average value of an inductor current peak value Ip determined by the specified value and the inductor current value Ib at turn-on as an average inductor current value ILav.

Abstract: An impedance dropping dc power supply having an impedance controlled converter whose impedance adaptively changes as a function of the power supply's load impedance, to maintain the ac voltage across the primary winding of its power transformer below a predetermined maximum level, and to minimize the waste heat generated by the power supply that would otherwise have to be dissipated.

Abstract: A converter station an element adapted to determine a value of an actual temperature of any critical component of the station and an element adapted to determine a value of an actual temperature of any media used to cool the critical component. An arrangement is adapted to utilize these temperature values and information about actual cooling capacity of any cooling equipment present to cool the critical component and information about the thermal behavior of the critical component and the possible cooling media upon a possible change of the power actually transmitted through the station in a mathematical model for calculating the present overload capabilities of the converter station for use in the control of converters of the station upon a possible request of utilizing an overload capability of the station.

Abstract: A regulated power supply apparatus is provided. The apparatus includes an input power converting circuit for generating a rectified voltage signal, an output power converting circuit comprising a plurality of switching elements, the output power converting circuit coupled to receive the rectified voltage signal, an output power storing element coupled with the output power converting circuit, and an output power bidirectional regulating circuit comprising an integrated circuit coupled with the output power converting circuit, the bidirectional regulating circuit including control signals for operating the switching elements to store power on the output power storing element and to deliver power to an output load from the output power storing element. An integrated circuit controlled regulator circuit is provided for controlling a plurality of switches a boost and buck converter. A method of regulating power supply is also provided.

Abstract: A converter controllable in regenerative running mode, which is a power converting apparatus capable of suppressing harmonics without increasing the size of a reactor, and reducing power loss and electromagnetic noise. A power converter is configured by directly connecting AC sides of single-phase sub-converters having a DC voltage lower than a DC voltage of a 3-phase main converter to AC input lines of individual phases thereof in series. The main converter is driven by one gate pulse per half recurring cycle and a voltage produced by each sub-converter at AC terminals thereof is controlled to match a difference between an AC power supply voltage and a voltage produced by the main converter at AC terminals thereof, whereby phase voltages of the power converter are generated as the sums of phase voltages of the individual converters.

Abstract: The purpose for this device is to provide electrical power to an automotive electrical control system from a residential electrical service. The power from an auxiliary power supply will maintain the operational data stored within the memory of the automotive computer and data within other electronic devices. This is accomplished by maintaining an energized electrical system, which will prevent the normal discharge of the battery due to parasitic loads. This device has precise voltage regulation to maintain the proper voltage level of the electrical system with or without the normal storage battery being present, Parasitic loads are those loads that require electrical energy when the automobile engine is not running.

Abstract: An electronic device that includes a motion activated amplifier structured to receive a first DC signal having a first DC voltage level and output a second DC signal having a second DC voltage level that is greater than the first DC voltage level. The motion activated amplifier includes a motion activated switch operatively coupled to transformer/rectifier circuitry, wherein the motion activated switch is structured to receive the first DC signal and in response to being moved output an AC signal, and wherein the transformer/rectifier circuitry is structured to receive the AC signal and convert the AC signal into the second DC signal.

Abstract: In some embodiments, a power supply may include a power factor correction (PFC) circuit to receive an input voltage signal and to provide an intermediate PFC output voltage signal, the PFC circuit including at least a first PFC stage and a second PFC stage, a converter circuit to convert the intermediate PFC output voltage signal to an output voltage signal, the converter circuit including at least a first converter stage and a second converter stage, and a control circuit to monitor at least one of the input voltage signal, the intermediate PFC output voltage signal, and the output voltage signal and to switch between respective pairs of the first PFC stage and first converter stage and the second PFC stage and the second converter stage based on the monitored signals.

Abstract: A switched-mode power supply unit includes a mains input connecting the power supply to a primary supply voltage; an input circuit including a shared electrical path connected to the mains input and including a first mains filter, a first electrical path, connected in series with the shared electrical path, including a second mains filter, a second electrical path connected in series with the shared electrical path and connected in parallel with the first electrical path, and a first switching element that opens the first electrical path; a supply output that provides a filtered primary supply voltage; a switched-mode converter coupled to the supply output that converts the filtered primary supply voltage to a secondary supply voltage; and a control circuit that selectively switches the power supply unit to a first mode of operation with a high power output or a second mode of operation with a reduced power output.

Abstract: Methods and systems for active resonant voltage switching are provided. One active resonant switching system includes a voltage switching system having one or more active resonant modules to provide a switching voltage output. Each of the resonant modules includes a plurality of switching devices configured to operate in open and closed states to produce first and second voltage level outputs from a voltage input. The resonant modules also include a capacitor connected to the switching devices and configured to receive a discharge energy during a resonant operating cycle when switching an output voltage from the first voltage level to the second voltage level, wherein the capacitor is further configured to restore system energy when switching from the second to first voltage level. The resonant modules further include a resonant inductor configured to transfer energy to and from the capacitor.

Abstract: A device, which functions to generate a DC voltage or a DC current, has at least one rectifier element (D) and at least one transformer (T) that has at least one primary winding (W1) connected through leads (PL1, PL2) of a power supply lead (PL) to an AC voltage source (Q) and has at least one secondary winding (W2) connected to a load (Z), the windings being disposed on an associated magnet frame (JK) that functions to carry a magnetic flux ?. According to the invention, the primary winding (W1) is connected through the rectifier element (D) to the AC voltage source (Q) such that for each AC half-wave of corresponding polarity a current I1 is able to be carried through the rectifier element (D) and through the primary winding (W1), the current driving the magnetic flux ? always in the same direction through the magnet frame (JK).

Abstract: The present invention relates to a power converter with extremely low standby power consumption. The power converter comprises a rectification module having at least one unilateral switch which has a control terminal, an anode terminal and a cathode terminal. The control terminal is coupled to a control signal, wherein when the control signal issues a first level, the channel between the anode terminal and the cathode terminal is enabled to act as a unilateral switch; and when the control signal issues a second level, the channel between the anode terminal and the cathode terminal is open circuited.

Abstract: A power supply circuit enabling provision of good energy efficiency and downsizing is provided. A power supply circuit 1 according to the present invention includes: input terminals 2, 2 connected to a commercial power supply 10; a winding 4 serially connected between the input terminals 2, 2 via input conductors 3; and a plurality of output terminals 6A, 6B connected to opposite ends of respective windings 4A and 4B resulting from dividing the entire winding 4 into a plurality of parts via output conductors, the respective output terminals 6A and 6B being independently connected to respective loads 20A and 20B.

Abstract: A power converter is provided that has an alternating-current (AC) to direct-current (DC) switched-mode power converter circuit that converts alternating-current power into direct-current power for powering an attached electronic device. Power can be conserved by automatically placing the power converter circuit in a low-power standby mode of operation whenever the electronic device is detached from the power converter. A monitoring circuit can be powered by a capacitor or other energy storage element while the power converter is operating in the standby mode. If the monitoring circuit detects an output voltage change that is indicative of attachment of the electronic device or if the storage element needs to be replenished, the monitoring circuit can place the power converter circuit in an active mode of operation.

Abstract: A power interface enables a low-power device to be powered from an alternating current (AC) wall receptacle or light socket with automatic backup battery charging. The power interface of an embodiment comprises a transformer module that receives an input signal. The device includes a battery module coupled to the transformer module, and the battery module includes battery charging circuitry coupled to a battery. The device comprises an output controller coupled to the transformer module and the battery module. The output controller includes detector circuitry that detects a state of the input signal. The output controller automatically controls coupling of one of a transformer module output and a battery module output to a device output according to the state of the input signal.

Abstract: There is provided a method for controlling a switching power unit that converts AC input voltages of an AC source into a DC voltages while improving a power-factor of the AC input voltages, the switching power unit comprising an AC/DC converter circuit that is composed of a power-factor correction unit and a current resonance converter unit wherein at least a part of switching elements of the current resonance converter unit is shared with switching elements of the power-factor correction unit, wherein around timing that polarities of the AC source are switched between a positive half cycle and a negative half cycle, ON-and-OFF control of the switching elements are performed as that high frequency voltages that are applied to a primary winding of a high frequency transformer which is a part of the current resonance converter unit are to be symmetrical in a positive and negative relation.

Abstract: A power semiconductor device is provided that includes a depletion mode (normally ON) main switching device cascoded with a higher speed switching device, resulting in an enhancement mode (normally OFF) FET device for switching power applications. The main switching device comprises a depletion mode GaN-based HEMT (High Electron Mobility Transistor) FET that does not include an intrinsic body diode. In one or more embodiments, the higher speed switching device comprises a high speed FET semiconductor switch arranged or connected in parallel with a Schottky diode. The high speed FET semiconductor switch may comprise a Si FET, GaN FET or any other type of FET which possesses higher speed switching capabilities and a lower voltage than that of the GaN-based HEMT FET. In some embodiments, the GaN-based HEMT FET and the higher speed switching device (i.e., the FET and Schottky diode) may be monolithically integrated on the same substrate.

Abstract: A NFC enabled device to couple inductively to the H field of an RF signal and a regulator to regulate a voltage derived from an RF signal inductively coupled to the inductive coupler. The regulator has at least one voltage controlled impedance having a switch on voltage. A regulator controller provides a control voltage to each voltage controlled impedance such as that the control voltage is not less than the switch on voltage of the voltage controlled impedance.

Abstract: A semiconductor device 101 in a bi-directional switch includes: a first electrode 109A, a second electrode 109B, a first gate electrode 112A, and a second gate electrode 112B. In a transition period: when the potential of the first electrode 109A is higher than the potential of the second electrode 109B, a voltage lower than the first threshold voltage is applied to the first gate electrode 112A and a voltage higher than the second threshold value voltage is applied to the second gate electrode 112B; and otherwise, a voltage higher than the first threshold value voltage is applied to the first gate electrode, and a voltage lower than the second threshold value voltage is applied to the second gate electrode.

Abstract: The invention relates to an input circuit for a logic circuit part, comprising a voltage converter component for conversion of a mains voltage to the required low voltage in order to supply a user with a low voltage. The supply to the input circuit may hence be connected to a mains supply to rectify the mains voltage and an output from the input circuit may be connected to the voltage converter component to provide a rectified input voltage for the voltage converter component. According to the invention, an improved input circuit for a logic circuit part with improved functionality and operating security also permitting an extensive miniaturization and simplified production may be achieved by replacement of at least two of the remaining four diodes in the rectifier part of an input circuit for a logic circuit part by two controllable switches which work as a synchronous rectifier and are connected such as to be switched on and off by alternate forced control.

Abstract: A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally regulate the output voltage for a wide range of input voltages. An integrated adaptive array having a plurality of input cells, a plurality of output cells, or a plurality of both is also disclosed. The input and output cells may be adaptively configured to provide an adjustable transformer turns ratio for the adaptive array or in the case of an integrated VTM, an adjustable voltage transformation ratio for the integrated VTM. A controller is used to configure the cells and provide digital regulation of the output. A converter having input cells configured as a complementary pair, which are switched out of phase, reduces common mode current and noise. Series connected input cells are used for reducing primary switch voltage ratings in a converter and enabling increased operating frequency or efficiency.