Abstract: A voltage multiplying circuit comprising: a first capacitor, comprising a first terminal and a second terminal, wherein the first terminal of the first capacitor is selectively coupled to a first voltage or a second voltage, and the second terminal is selectively coupled to the first voltage or a fourth voltage; a second capacitor, comprising a first terminal and a second terminal, wherein the first terminal of the second capacitor is selectively coupled to the second voltage or the fourth voltage, and the second terminal of the second capacitor is selectively coupled to a third voltage or the fourth voltage; and a third capacitor, comprising a first terminal and a second terminal, wherein the first terminal of the third capacitor is selectively coupled to the second voltage or the fourth voltage, and the second terminal of the third capacitor is selectively coupled to a third voltage or the fourth voltage.

Abstract: A voltage booster system of a charge pump type includes a regulator for outputting a constant voltage and a charge pump circuit for boosting a voltage of an output terminal of the regulator. The regulator includes a differential amplifier unit for inputting a reference voltage and a feedback voltage according to the voltage of the output terminal, and an output stage portion including an PN connection element having one end portion connected to an application terminal of a power source voltage and another end portion connected to the output terminal. The PN connection element is configured to be controlled according to an output signal of the differential amplifier unit. The charge pump circuit includes a first capacitor to which the voltage of the output terminal is applied to be charged; a second capacitor; a third capacitor; a first switching section; and a second switching section.

Abstract: A semiconductor integrated circuit has a rectifying circuit, a switched capacitor, a switched-capacitor drive circuit, a demodulator, and an internal circuit. The switched capacitor executes series charging and parallel discharging to/from a plurality of capacitors using an output rectified voltage. When the current driving performance at the time of supplying a power source voltage is set to a high state, so that a receiving operation in a card is executed reliably even at a long communication distance. Transmission signal data from a card is supplied to a switched-capacitor current driving performance increase disable circuit, and the current driving performance at the time of supplying the power source voltage in the switched capacitor is changed to be low. The change is detected as a magnetic field change in an antenna by an apparatus.

Abstract: A capacitive voltage converter providing multiple gain modes comprising a switched capacitor array having a voltage input and a voltage output. A skip gating control coupled to the switched capacitor array and configured to control a switch resistance value of the switched capacitor array, and to control a switching sequence of the switched capacitor array. An override control coupled to the skip gating control and the switched capacitor array, the override control configured to detect transitions in a gain mode and to modify the switch resistance value of the switched capacitor array and the switching sequence of the switched capacitor array for a finite amount of time following the gain mode transition.

Abstract: A circuit arrangement that has an energy source that can provide a charging voltage for charging an electrical energy storage unit in a charging circuit when it is connected to an energy supply, wherein it is possible to represent the charging voltage using an alternating quantity, and that has a capacitor circuit having a first capacitor element, a first valve element, and the energy source, wherein the first capacitor element is charged by the energy source via the first valve element if the charging voltage is negative, so that, if the charging voltage is positive, the voltage over the first capacitor element has the same orientation in the capacitor circuit, in terms of sign, as the charging voltage, and the voltage over the capacitor element.

Abstract: The disclosed embodiments relate to a system that implements a switched-capacitor power converter which is configured to actively control power loss while converting an input voltage to an output voltage. This system includes one or more switched-capacitor blocks (SCBs), wherein each SCB includes a first capacitor and a set of switching devices configured to couple a constant-potential terminal and a time-varying-potential terminal of the first capacitor between the input voltage, the output voltage and a reference voltage. The system also includes a clocking circuit which produces gate drive signals for switching transistors in the one or more SCBs. The system additionally includes a controller configured to actively control the gate drive signals from the clocking circuit to substantially minimize the power loss for the switched-capacitor power converter.

Abstract: An apparatus for voltage conversion includes a switched capacitor circuit, a pre-charge circuit, a voltage divider stage, and a driver stage. The switched capacitor circuit has pump capacitors to transfer energy and a steady-state operating mode and a pre-charge mode. The pre-charge circuit initially charges the pump capacitors when the switched capacitor circuit operates in the pre-charge mode. It includes a voltage divider stage having one or more nodes, each of which provides voltage at one of a corresponding one or more voltage levels, and a driver stage having one or more cascoded drivers, each of which comprises a first terminal for receiving a drive signal that depends at least in part on a voltage level at a corresponding one of the nodes, and a second terminal for coupling to a pump capacitor and to another of the drivers.

Abstract: A direct current (DC) to DC converter, including: input ports for receiving an input DC voltage; output ports for outputting an output DC voltage; a first matrix of capacitors and switches; a second matrix of capacitors and switches; and a control circuit, coupled to the switches of the first and second matrices, configure d to repetitively: (i) configure the first matrix to a charge configuration and couple the first matrix to the input ports while configuring the second matrix to a discharge configuration and coupling the second matrix to the output ports; (ii) maintain the charge and discharge configurations for a first period of time; (iii) configure the second matrix to the charge configuration and couple the second matrix to the input ports while configuring the first matrix to the discharge configuration and couple the first matrix to the output ports; and (iv) maintain the charge and discharge configurations for a second period of time; (a) wherein the charge configuration and the discharge configurat

Abstract: A voltage supply incorporates two voltage supplies connected in a mirror-image series arrangement to generate a DC voltage between the respective common terminals of the voltage supplies.

Abstract: Disclosed are apparatus and methodology for providing a capacitive voltage divider configured to reduce a relatively high level alternating current (AC) to a lower level direct current (DC). The apparatus provides a series of capacitors and diodes configured for series charging of the capacitors and parallel discharge thereof by way of a single switching element. In operation, the capacitor series is charged during the negative half cycle of the AC source and then discharged during the positive half cycle thereof.

Abstract: A voltage converter is provided in which a first terminal (A) and a second terminal (B) are provided, each coupled to a switching means, the switching means is coupled to respective terminals for connecting a first capacitor (C1), a second capacitor (C2) and a third capacitor (C3), and the voltage converter is configured for being operated in first and second modes of operation each comprising at least three phases, and in which the three capacitors (C1, C2, C3) are inserted in series connection (S) between the first terminal (A) and a reference potential terminal (10) in one phase, and in each of the two other phases a first path and a second path (P1, P2) are provided in each case in parallel connection with at least one of the three capacitors (C1, C2, C3) related to the second terminal (B).

Abstract: A power supply apparatus and a method for supplying power are provided. The apparatus, for use in a system having a first power signal, includes an assistance unit and a power supply device. The assistance unit outputs at least one maintaining signal according to the first power signal selectively. The power supply device outputs a second power signal, wherein the power supply device maintains the second power signal according to the at least one maintaining signal, for example, in an inactive state, such as an idle or standby state or other suitable timing.

Abstract: The present invention relates to a controlled truncating radio connection for a high-voltage impulse test system, preferably for quality assurance of power transformers. According to the invention, the truncating radio connection is expanded by an additional damping unit, made of a serial damping resistance and a damping inductance having a radio connection connected in parallel thereto, and thereby combines the functionalities of a truncating radio connection and an overshoot compensation in only one auxiliary component.

Abstract: Some embodiments of the present invention provide a system that efficiently converts between a lower input voltage and a higher output voltage. This system includes an input which receives the input voltage, and an output which provides the output voltage. The system also includes a first capacitor with a higher potential terminal and a lower potential terminal, as well as a first set of switching devices which selectively couple the higher potential and lower potential terminals of the first capacitor between the input voltage, the output voltage and a base voltage. The system additionally includes a resonant clocking circuit which generates clock signals with substantially non-overlapping clock phases, including a first phase and a second phase.

Abstract: An electricity accumulating device includes capacitors connected in series, balanced voltage adjusting portions connected to the capacitors respectively, and a control circuit connected to the balanced voltage adjusting portions. The control circuit performs the following operations: measuring two voltages at different times from each other across each capacitor during the non-charge-or-discharge period of the capacitors by using the balanced voltage adjusting portions; calculating the absolute value of the difference between the two voltages; determining the balanced voltage of each of the capacitors according to the absolute value; and controlling the balanced voltage adjusting portions to make the voltage across each capacitor a balanced voltage.

Abstract: There is provided a high voltage power supply capable of reducing voltage stress of a voltage multiplying device. The high voltage power supply includes: a power converter switching on/off and converting an input direct current power into a direct current power having a preset voltage level; and a voltage multiplier including a first multiplying cell multiplying the voltage level of the direct current power from the power converter, wherein the first multiplying cell includes: first and second capacitors charging the direct current power from the power converter, respectively; a first diode providing a path for transferring the direct current power when the power converter is switched off; and a second diode providing a path for transferring the direct current power when the power converter is switched on.

Abstract: Techniques for generating a differential output voltage between first and second output voltages that is double a differential input voltage between first and second input voltages. In one aspect, first and second capacitors of a constituent voltage doubler are charged to a differential input voltage during a charging phase. During an output phase non-overlapping in time with the charging phase, the first and second capacitors are stacked in series to generate the differential output voltage. The first and second capacitors are both coupled to a single common-mode voltage to provide a predefined common-mode output voltage. Further techniques for providing two or more constituent voltage doublers to extend the output phase are described.

Abstract: A system to improve a multistage charge pump may include a capacitor, a first plate carried by the capacitor, and a second plate carried by the capacitor opposite the first plate. The system may also include a clock to control charging and discharging of the capacitor. The system may further include a power supply to provide a power supply voltage across the first plate and the second plate during charging of the capacitor. The system may also include a voltage line to lift the second plate to an intermediate voltage during discharging of the capacitor. The system may further include an output line connected to the first plate during discharging of the capacitor to provide an output voltage.

Abstract: The power supply device according to the present invention converts alternating-current power into direct-current power, and supplies the direct-current power to a load. Further, the power supply device includes a buffer, a control section, a rectifier circuit, a smoothing circuit, and a switch. After a predetermined zero cross point is detected, the control section uses in common, over a predetermined period of the alternating-current power, predetermined parameters retained in the buffer in calculating a timing at which a PAM interrupt pulse is generated.

Abstract: The invention relates to a voltage-boosting stage (100) comprising a first capacitive voltage circuit (S1, S2, S3, S4, C0, Cb) coupled to a power supply (Vs) and providing an output voltage at an output terminal. The voltage-boosting stage further comprises a second capacitive voltage circuit (S5, S6, S7, S8, C1, Cb) coupled to a power supply (Vs) and providing another output voltage at another output terminal the output terminal and the other terminals being coupled together and further coupled to a supply terminal of a power stage (S9, S10) for implementing a two-level boosted power stage.

Abstract: A DC/DC converter includes an input terminal for receiving an input voltage; an output terminal for providing an output voltage; a ground terminal for providing a reference voltage; a plurality of charge pump capacitors including at least a first charge pump capacitor, a second charge pump capacitor, and a third charge pump capacitor; and a switch circuit. The switch circuit includes a plurality of switches configured to allow the plurality of charge pump capacitors connected in a hybrid parallel-series arrangement between the input terminal and the ground terminal or between the input terminal and the output terminal by selectively conducting a specified portion of the switches.

Abstract: Methods and apparatus for providing a DC/DC converter having a first configuration to output a first voltage level and a second configuration to output a second voltage level.

Abstract: A battery and ultracapacitor device for use in a vehicle includes a positive electrode, a first negative electrode, a second negative electrode, a first separator disposed between the positive electrode and the first and second negative electrodes, and a controller communicating with the positive electrode, the first negative electrode, and the second negative electrode. A first negative electrode has a first composition and communicates with the first positive electrode. The second negative electrode has a second composition and is adjacent to the first negative electrode and a second separator. The second negative electrode communicates with the positive electrode and the first negative electrode. The first negative electrode comprises a secondary battery negative electrode. The second negative electrode comprises an ultracapacitor negative electrode.

Abstract: A circuit for a fill-level measuring device is for the fast switching-on of a high-frequency element on a ground port is disclosed. The circuit comprises a switching unit with a circuit mass; a high-frequency element with a high-frequency mass; and a coupling element that couples the two masses together and at the same time insulates them from each other in a direct-current manner. In this way the switching unit can be arranged on the GND port of the HF-element, without influencing the HF characteristics of said HF element.

Abstract: An electric power supply circuit includes a diode bridge circuit (12) for rectifying an alternating current, a switching element (S) for causing a short-circuit for output power of the diode bridge circuit (12), and a PAM control section (15) for causing the switching element (S) to perform switching with a predetermined timing so that a waveform of an input current approximates to a sine wave. The PAM control section (15) outputs ON/OFF pulses so that five pulses are output for each zero-cross point and one of the five pulses located in center extends over the zero-cross point at any time.

Abstract: In general, in one aspect, the disclosure describes a switched capacitor voltage regulator to generate a regulated output voltage based on varying input voltages. The regulator is capable of operating at one of a plurality of voltage conversion ratios and selection of the one of a plurality of voltage conversion ratios is based on an input voltage received. The switched capacitor voltage regulator provides a lossless (or substantially lossless) voltage conversion at the selected ratio. The ratio selected provides a down converted voltage closest to the regulated output voltage without going below the regulated output voltage. The down converted voltage is adjusted to the regulated output voltage using a resistive mechanism to dissipate excess power (lossy). Selection of an appropriate conversion ratio limits the resistive regulation and losses associated therewith and increases the efficiency of the switched capacitor voltage regulator.

Abstract: Occurrence of power supply noise arising in connection with a step-down action at the time of turning on power supply is to be restrained. A step-down unit is provided with a switched capacitor type step-down circuit and a series regulator type step-down circuit, and stepped-down voltage output terminals of the step-down circuits are connected in common. The common connection of the stepped-down voltage output terminals of both step-down circuits makes possible parallel driving of both, selective driving of either or consecutive driving of the two. In the consecutive driving, even if the switched capacitor type step-down circuit is driven after driving the series regulator type step-down circuit first to supply a stepped-down voltage to loads, the switched capacitor type step-down circuit will need only to be compensated for a discharge due to the loads, and a peak of a charge current for capacitors can be kept low.

Abstract: A DC blocking capacitor and a resistor are coupled in series, and coupled in parallel with an electricity storing section. An ON/OFF circuit and a peak voltage holding circuit are coupled in parallel with the resistor. A current sensing section is coupled in series with the storing section, with its output supplied to the peak current holding circuit. Current from a positive to a negative electrode of the storing section is referred to as a positive direction. The ON/OFF circuit is turned on when the current flows in a negative direction, and is turned off when the current flows in the positive direction. An internal resistor of the storing section is found based on a peak voltage and a peak current resulting from the control and held by the respective circuits. A degree of degradation of the electricity storing section is determined with this internal resistor.

Abstract: The features of this invention allow construction and operation of a variety of high voltage, high repetition rated pulse generators of the Marx type that are switched with photon initiated semiconductor switches of the closing type. The photon initiated semiconductor switches can be constructed with bulk materials or in layered devices such as thyristors. Variations on the invention permit the formation of shaped high voltage pulses; particularly those that are nearly rectangular: with controlled rise and fall times, minimal or no overshoot, and minimal voltage ripple.

Abstract: A device and method for harvesting, generating, storing, and delivering energy to a load, particularly for remote or inaccessible applications. The device preferably comprises one or more energy sources, at least one supercapacitor, at least one rechargeable battery, and a controller. The charging of the energy storage devices and the delivery of power to the load is preferably dynamically varied to maximize efficiency. A low power consumption charge pump circuit is preferably employed to collect power from low power energy sources while also enabling the delivery of higher voltage power to the load. The charging voltage is preferably programmable, enabling one device to be used for a wide range of specific applications.

Abstract: To include an internal voltage generating circuit that includes a capacitor having a first electrode and a second electrode and generates an internal voltage by repeating a charge operation for charging the capacitor to a VDD level and a discharge operation for applying the VDD level to the first electrode of the capacitor to generate a voltage of two times the VDD level on the second electrode, and a control circuit that performs a control to apply a voltage that is lower than the VDD level to the capacitor when the internal voltage generating circuit is in a standby state. According to the present invention, when the internal voltage generating circuit is in a standby state, because a voltage applied to both ends of the capacitor is reduced, it is possible to reduce the power consumption due to a leakage current.

Abstract: In a power conversion device which performs DC/DC conversion, an inverter circuit (20), which is formed of one or more single-phase inverters (20a) and (20b) connected in series to each other, is connected in series to a DC power supply (1) in its subsequent stage. In further subsequent stage, a smoothing capacitor (6) connected to the inverter circuit (20) via a rectifier diode (5), and a shorting switch (4) which bypasses the smoothing capacitor (6) are provided. The shorting switch (4) is switched ON to charge capacitors (25) and (35) included in the single-phase inverter (20a) and (20b), respectively, whereas the shorting switch (4) is switched OFF to discharge the capacitors (25) and (35), whereby the voltage of the smoothing capacitor (6) is controlled.

Abstract: The invention provides an optimal electric power converter for a DC/DC converter which variably steps up a voltage successively with an optional magnification of one to two times or more and/or step down a voltage successively with a step-down ratio of one time or less. The converter includes a first input-output part, an inductor connected with a positive or a negative electrode side of the first input-output part, plural switches, plural capacitors, a second input-output part connected with plural capacitors, and a control circuit, wherein the control circuit controls the plural switches with operation mode and makes the inductor and plural capacitors selectively functional, wherein the electric power converter is of a switched capacitance type that performs any operation out of step-up, step-down, regeneration, and continuity, and wherein the control circuit controls to have a period for which two switches out of the plural switches are simultaneously turned ON.

Abstract: A circuit and method for providing a fully integrated DC-DC converter using on-chip switched capacitors is disclosed. A switched capacitor matrix is coupled as a digitally controlled transfer capacitor. A pair of non-overlapping, fixed frequency clock signals is provided to a switched capacitor circuit including the switched capacitor matrix and a load capacitor coupled to the output terminal. A DC input voltage supply is provided. A hysteretic feedback loop is used to control the voltage at the output as a stepped-down voltage from the input by digitally modulating the transfer capacitor using switches in the switch matrix to couple more, or fewer, transfer capacitors to the output terminal during a clock cycle. A coarse and a fine adjustment circuit are provided to improve the regulation during rapid changes in load power. A method of operating the regulator is disclosed.

Abstract: An energiser for an electric fence. The energiser includes, at least, one energy storage capacitor (14), a charging circuit (13) to enable the or each storage capacitor (14) to be charged from an energy source (10), semiconductor switching means (16), and control circuit means (15) to facilitate controlled turning -on and -off of the semiconductor switching means (16) to control the duration of the discharge from the energy storage means (14). In one form of the energiser a first semi-conductor switching means is arranged to connect in parallel the energy storage capacitors (14) to be charged and second semi-conductor switching means to connect two or more of the charged energy storage capacitors (14) in series to create an output pulse.

Abstract: A charge pump circuit generates a desired output voltage by stepping up an input voltage. An LCD driver IC and an electronic appliance are provided with the charge pump circuit.

Abstract: Occurrence of power supply noise arising in connection with a step-down action at the time of turning on power supply is to be restrained. A step-down unit is provided with a switched capacitor type step-down circuit and a series regulator type step-down circuit, and stepped-down voltage output terminals of the step-down circuits are connected in common. The common connection of the stepped-down voltage output terminals of both step-down circuits makes possible parallel driving of both, selective driving of either or consecutive driving of the two. In the consecutive driving, even if the switched capacitor type step-down circuit is driven after driving the series regulator type step-down circuit first to supply a stepped-down voltage to loads, the switched capacitor type step-down circuit will need only to be compensated for a discharge due to the loads, and a peak of a charge current for capacitors can be kept low.

Abstract: A discharging device capable of realizing a proper PWM drive by accurately reflecting, as a strobe device, the secondary-side condition of a separately-excited strobe charging circuit being charged. A charging device which charges a main capacitor (2) via a separately-excited DC/DC converter and discharges the energy of the main capacitor, wherein a pulse width control circuit (1) for controlling a conduction pulse width on the primary side of the separately-excited DC/DC converter is provided, and this pulse width control circuit is configured such that a PWM soft start drive is performed that expands a conduction pulse width on the primary side of the separately-excited DC/DC converter stepwise up to a maximum pulse width.

Abstract: A DC/DC converter includes an input terminal for receiving an input voltage; an output terminal for providing an output voltage; a ground terminal for providing a reference voltage; a plurality of charge pump capacitors including at least a first charge pump capacitor, a second charge pump capacitor, and a third charge pump capacitor; and a switch circuit. The switch circuit includes a plurality of switches configured to allow the plurality of charge pump capacitors connected in a hybrid parallel-series arrangement between the input terminal and the ground terminal or between the input terminal and the output terminal by selectively conducting a specified portion of the switches.

Abstract: In one embodiment, a switch capacitor controller (20) is configured to use a drive signal (45) to drive the switched capacitor (26) with a signal having a time dependent transition time.

Abstract: Techniques for generating a differential output voltage between first and second output voltages that is double a differential input voltage between first and second input voltages. In one aspect, first and second capacitors of a constituent voltage doubler are charged to a differential input voltage during a charging phase. During an output phase non-overlapping in time with the charging phase, the first and second capacitors are stacked in series to generate the differential output voltage. The first and second capacitors are both coupled to a single common-mode voltage to provide a predefined common-mode output voltage. Further techniques for providing two or more constituent voltage doublers to extend the output phase are described.

Abstract: The production and emission of high-energy microwave pulses are made possible by means of a device with a particularly compact design if the capacitor column (12-12) of the Marx generator (11) whose series circuit conventionally itself feeds a microwave generator with a matched antenna geometry, is now itself used—dispensing with the microwave generator and its antenna—directly as a resonator and Hertzian antenna dipole (24). Its oscillation response can be optimized by triggered spark gaps (14) for the switching of capacitors (12), and by means of plates (19) connected at the ends, in order to increase the stray capacitances.

Abstract: Electric storage device is provided which is capable of smoothly charging storage elements and reliably detecting an overvoltage of each of the storage elements. Electric storage device includes charging/discharging limiting circuit. Charging/discharging limiting circuit includes charge element, discharge, control unit, charging current detection unit, voltage detection unit, valuable reference voltage source, and voltage comparison unit. A magnitude of valuable reference voltage source that is connected to an input terminal on a first side of voltage comparison unit is adjusted by charging current detection unit. Detection signal from the voltage detection unit is given to an input terminal on a second side of voltage comparison unit.

Abstract: A method for controlling a pulse generator is provided. The method includes measuring a switch-on time difference for each cell and controlling the semiconductor switches of each cell for the voltage pulse as a function of the switch-on time difference. The switch-on time difference is measured between a switch-on signal for switching the respective semiconductor switch of the cell to a conducting state and a system response dependent on the switching to the conducting state. A second switch-on signal for each cell is generated in such a time-shifted manner that the system response of each cell occurs simultaneously. The system response is dependent on the switching to the conducting state.

Abstract: A calibration circuit calibrates an adjustable capacitance of a circuit having a time constant depending on the adjustable capacitance. The calibration circuit outputs a calibration signal carrying information for calibrating the capacitor and includes a calibration loop.

Abstract: A method and a small profile apparatus for generating high voltage impulses. Integration of the radiating antenna with the impulse source structure makes possible the small size of the present invention.

Abstract: An impulse generator including first and second differentiators coupled in parallel to each other, for generating impulses by differentiating a clock signal, and first and second switches for transiting on and off the first and second differentiators respectively to selectively output the impulses generated by the first and second differentiators, and varying polarity of the impulses by changing a direction of a current flowing through load. Accordingly, the negative and positive impulses are selectively output according to the circuit state, reliability of the impulses is improved, and power consumption is reduced.

Abstract: A voltage controller having an input distribution network with imbedded input switches, a number of charge storage elements such as capacitors, an output distribution network with imbedded output switches, and a switch actuator which controls the input switches and output switches to provide for the controlled charging and discharging of the charge storage elements.

Abstract: A device and method for harvesting, generating, storing, and delivering energy to a load, particularly for remote or inaccessible applications. The device preferably comprises one or more energy sources, at least one supercapacitor, at least one rechargeable battery, and a controller. The charging of the energy storage devices and the delivery of power to the load is preferably dynamically varied to maximize efficiency. A low power consumption charge pump circuit is preferably employed to collect power from low power energy sources while also enabling the delivery of higher voltage power to the load. The charging voltage is preferably programmable, enabling one device to be used for a wide range of specific applications.

Abstract: A booster circuit includes a first transistor performing a first on-off operation based on a first control signal and a second transistor performing a second on-off operation based on the first control signal. The first on-off operation and the second on-off operation are reversed. A third transistor performs the first on-off operation based on a second control signal. The second control signal has a phase opposite the first control signal. A fourth transistor is included in a metal oxide semiconductor capacitor.