Patent application number | Description | Published |
20100052768 | GATE-CHARGE RETAINING SWITCH - This invention provides a means and method for preventing unwanted semiconductor turn-on and turn-off, caused by a high rate of voltage change, without significantly affecting the desired ON and OFF transitions of the semiconductor. According to this invention, time is provided during either or both bistable ON and OFF semiconductor states, during which the semiconductor gate is allowed to float, neither being driven ON or OFF, and circuitry for lowering gate-node impedance at non-transitional times to prevent state disruptions by dV/dT is provided. | 03-04-2010 |
20100066335 | POWER CONVERSION REGULATOR WITH PREDICTIVE ENERGY BALANCING - A power-conversion regulator comprising an inductive reactor, an output filter reactor, and a switch for admitting energy to the inductive reactor, additionally comprises computation circuitry responsive to the flux in the inductive reactor, to a reference signal, to an output voltage, and sometimes to an output load current, for computing the quantity of energy that must be supplied to a load and to the output filter reactor to regulate the output voltage or current to a desired relationship with the reference signal during each chopping waveform cycle driving the switch. As the inductive reactor is charged from an input energy source, the computation circuitry predicts whether the energy in the inductive reactor has become adequate for the regulation. | 03-18-2010 |
20110115455 | ENERGY PREDICTIVE BUCK CONVERTER - In a switched-mode buck power converter, superior regulation with excellent transient response is provided when per-cycle energy demand is determined and balanced with per-cycle inductive energy supply to control per-cycle inductive energy charging. Such per cycle inductive energy calculation is improved through the prediction of pedestal energy during operating periods of Continuous Conduction Mode (CCM). Further, recovery from severe transients sometimes straddles multiple chopping cycles. Such recovery is best obtained by preserving energy balance information from one or more un-recovered chopping cycles, to be used to restore energy balance in subsequent cycles. Significant improvement over prior art converters may be obtained even when the energy balance data used for control and recovery are imprecise approximations of true energy demand and supply. | 05-19-2011 |
20110122657 | SWITCH WITH COMMON-MODE CHOKE - A common-mode choke level-shifter drives a power switch with sub-nanosecond timing integrity without requiring a high-side gate-drive power supply. The same level-shifter may also be used to drive a low-side switch to avoid ground bounce effects. | 05-26-2011 |
20110187186 | UNIVERSAL SINGLE-STAGE POWER CONVERTER WITH PFC CAPABILITY - A switched-mode power converter power converter, in one preferred embodiment with eight switches connected between three ports and an inductive element, with a donor (charging) port, a receptor port (load) and donor/receptor port (storage) operated so that energy may be switch between any of the ports regardless of the polarity and magnitude of the inductor current at the beginning of a chopping cycle. In one embodiment of the invention power conversion and power factor correction are accomplished in a single stage. | 08-04-2011 |
20120250588 | SINGLE-TRANSFORMER FULL-DUPLEX DIGITAL ISOLATOR - The present invention provides a single transformer full-duplex digital isolator whereby two digital data streams may simultaneously be transmitted and received in opposite directions of propagation through a single transformer. | 10-04-2012 |
20140009975 | POWER CONVERTER WITH DEMAND PULSE ISOLATION - The present invention provides a switched-mode power converter with regulation demand pulses sent across a galvanic isolation barrier. | 01-09-2014 |
20140198545 | POWER-CONVERSION ENGINE - The disclosure provides a power converter and method for controlling same, comprising a plurality of switch elements, an inductive reactor, and at least two ports for the movement of electrical energy. Any energy-moving port may be made unipolar, bidirectional, bipolar, or bidirectionally bipolar. Ports may be equipped with sensing circuitry to allow the converter output to be controlled responsively to an input signal. The disclosure may be configured to be used in many ways, for example, as a power-supply, as an amplifier, or as a frequency converter. The disclosure may comprise energy predictive calculating means to obtain excellent transient response to line and load variations. The disclosure may also include a switch to create a low impedance path around the inductor to allow current to recirculate through the inductor when it is not needed at any of the ports. | 07-17-2014 |
20140232366 | Switched-Mode Compound Power Converter With Main and Supplemental Regulators - In certain embodiments, the present invention provides a compound power converter in which the majority of power passes from input to output through only a single stage of power conversion. At least one embodiment includes a main converter with an auxiliary output. The auxiliary output energizes a reservoir that provides input power for a supplemental converter capable supplying the main output. The supplemental converter improves regulation and can provide holdover power for Power Factor Correction (PFC) or Uninterruptible Power Supply (UPS) operation. | 08-21-2014 |
Patent application number | Description | Published |
20090167412 | GATE-CHARGE RETAINING SWITCH - The present invention discloses MOSFET or IGBT switch drive circuitry that uses the gate capacitance and the inherently high gate resistance of such switch devices to provide essentially bistable switching. Gate-charge is injected to enhance the switch device(s), invoking an ON state. Gate-charge is removed to deplete the switch device(s), invoking an OFF state. Circuitry is provided to effect charge removal immediately following charge injection, enabling relatively large switch devices to operate efficiently at several MHz. An arrangement for bipolar switch operation is provided. | 07-02-2009 |
20090189581 | APPARATUS AND METHOD FOR RECYCLING THE ENERGY FROM LOAD CAPACITANCE - The present invention provides a voltage regulator/power converter capable of bidirectional power propagation, fitted with controls capable of raising and lowering voltages with unprecedented speed and accuracy. The bidirectional capability allows energy stored in capacitors to be returned to system power sources. In one embodiment of the invention power is supplied from a power source (on a first port of the power converter) to the load (on a second port of the power converter) through the converter and then, when load voltage is reduced or turned off, energy in the load capacitance is returned from to the power source. In an alternative embodiment energy from load capacitance is stored or used by a device on a third port of the power converter. | 07-30-2009 |
20090251194 | DC COMMON MODE LEVEL SHIFTER - A switched-mode level-shifter shifts a differential voltage superimposed on a common-mode voltage. In the level shifter, a common-mode inductive reactor has at least two windings, and at least one of the differential voltage and the common-mode voltage are applied to at least one of the windings of the reactor. A switch charges the inductive reactor when caused to be in a first state, where the inductive reactor when charged experiences a change of flux according to the applied voltage. The switch also actuates a reset of the charged inductive reactor when caused to be in a second state, where the inductive reactor when reset reverses the change of flux experienced thereby. A source of a chopping signal is provided to alternately drive the switch between the first and second states, where each of the first and second states is one of in and out of conduction. | 10-08-2009 |
20130147449 | BI-POLAR BI-DIRECTIONAL ENERGY BALANCING POWER-CONVERSION ENGINE - The invention provides a power converter and method for controlling same, comprising a plurality of switch elements, an inductive reactor, and at least two ports for the movement of electrical energy. Any energy-moving port may be made unipolar, bidirectional, bipolar, or bidirectionally bipolar. Ports may be equipped with sensing circuitry to allow the converter output to be controlled responsively to an input signal. The invention may be configured to be used in many ways, for example, as a power-supply, as an amplifier, or as a frequency converter. The invention may comprise energy predictive calculating means to obtain excellent transient response to line and load variations. The invention may also include a switch to create a low impedance path around the inductor to allow current to recirculate through the inductor when it is not needed at any of the ports. | 06-13-2013 |
Patent application number | Description | Published |
20120055320 | Oscillatory, magnetically activated position sensor - The present invention provides an oscillatory, magnetically-activated position sensor. According to this invention, mechanical motion changes the linkage of magnetic flux between a magnet and an inductor having a magnetic core. The resulting change of flux through the core modulates its permeability responsive to the mechanical motion. The inductor is comprised by an electronic oscillator circuit, the oscillation amplitude, and frequency, of which is thereby modulated responsive to the mechanical motion. Circuitry for detecting the oscillation amplitude, and for generating a sensor output signal responsive to the mechanical motion is provided. Matrix operation of sensors according to this invention is also taught. | 03-08-2012 |
20120063055 | Direct-current current transformer - The present invention provides a direct-current current transformer, or DCCT, yielding bandwidth from DC to several MHz. The DCCT according to this invention is a simple, open-loop, device in which flux densities occur at very low levels, avoiding difficulties occasioned by core saturation. | 03-15-2012 |
20120167743 | Low-power sector-rotating toggling actuator - The present invention provides low-power, sector-rotating, electro-magnetically and mechanically operable toggling actuator. The reluctance of the magnetic circuit of this invention is controlled to effect actuation with but little magneto-motive force and, little electrical power. The preferred embodiment of this invention provides a single-coil, sector-rotating, electromagnetically and mechanically operable toggling actuator. In this embodiment, a pivotally-mounted magnetically-permeable rotor is attracted to either of two stable rotary positions by permanent magnets affixed to a magnetically-permeable stator. A magnetic circuit between the stator and the rotor comprises an electromagnetic coil to provide magneto-motive force for toggling the rotor to a desired position responsive to the direction of electrical current through the coil. A switch may be provided for activating external circuits responsive to rotor position. | 07-05-2012 |
20130042743 | ACTION MAGNETS AND DRIVERS TO REDUCE MUSICAL INSTRUMENT WIRING, CONNECTIONS, AND LOGIC - The present invention provides, for musical instruments such as organs, action-magnets and action-magnet drivers that facilitate reduction of wiring, connections, and logic circuitry. Some embodiments of present invention provide stop action-magnets, also called SAM's, comprising integral drive circuitry and, which may further comprise additional integral circuitry. Embodiments of this invention may comprise, logic circuits such as a shift-register cells, micro-controllers, or both. Some embodiments of this invention comprise shift-cells and registers combining both SIPO and PISO functions for addressing SAM's. A single-coil SAM embodiment of the present invention may respond to signals intended to operate traditional two-coil SAM's. In another embodiment, a pipe action-magnet driver comprises logic circuitry. In yet another embodiment a pipe action-magnet comprises an integral driver that further comprises logic circuitry. | 02-21-2013 |