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Class 323/225 - Plural devices


Subclass of Class 323 - Electricity: power supply or regulation systems
Definition: Subject matter wherein the shunt regulator is made up of
No. of patents: 276
Last issue date: 05/08/2012


1              
NumberTitleIssue Date
8174247Microwave transmission line DC/DC converter
A method and an electrical circuit for DC-DC voltage conversion in a network comprising an input voltage terminal, an output voltage terminal, at least one first switch and at least one second switch, at least one input impedance, at least one load impedance and at ...
05/08/2012
8174248Systems and methods of bit stuffing pulse width modulation
Systems and methods for bit stuffing pulse width modulation are provided. Example embodiments of the systems and methods of bit stuffing pulse width modulation disclosed herein may allow for a significant reduction in the size of the bootstrap capacitor while giving...
05/08/2012
8129960Resonance type electric power conversion apparatus and method
A resonance type electric power conversion apparatus which includes a main circuit including a main reactor, a main switching device, an inverse-parallel diode and an output power diode, and an auxiliary circuit including an auxiliary reactor, an auxiliary switch, a...
03/06/2012
8129961DC/DC-converter
The present invention relates voltage conversion device in which a regulated output voltage is supplied by current pulses generated by the voltage conversion device from a voltage source. In particular, the invention relates to an improved control of an pulse freque...
03/06/2012
8111052Zero voltage switching
A method for providing non-resonant zero-voltage switching in a switching power converter. The switching power converter converts power from input power to output power during multiple periodic switching cycles. The switching power converter includes a switch and an...
02/07/2012
8080981Interleaved-PWM power module system and method with phase-locking operation
An interleaved-PWM power module system and method for operating the same are disclosed. The power system includes at least two power modules, each of which has a specific ID number. The power module with an extreme value of the specific ID number is set as a master ...
12/20/2011
7956586Step-up/step-down type DC-DC converter, and control circuit and control method of the same
To provide a control circuit and control method of a step-up/step-down type DC-DC converter capable of realizing high efficiency. In a state (1), a terminal Tx of a choke coil L1 is connected to an input terminal Tin, and a terminal Ty is connected to ...
06/07/2011
7906944Extremely high-speed switchmode DC-DC converters
Switchmode DC-DC power converters using one or more non-Silicon-based switching transistors and a Silicon-based (e.g. CMOS) controller are disclosed. The non-Silicon-based switching transistors may comprise, but are not necessarily limited to, III-V compound semicon...
03/15/2011
7898229Supply architecture for inductive loads
Apparatus and associated systems and methods may relate to a process for supplying unidirectional current to a load, controlling a reverse electromotive force (REMF), capturing inductive energy from the load, and supplying the captured inductive energy to the load. ...
03/01/2011
7880449Capacitor start-up apparatus and method with fail-safe short circuit protection
Electronic circuits couple energy storage devices, such as double layer capacitors or rechargeable battery cells, to a power supply output, thereby improving noise suppression and extending ride-through capability of the power supply. In a typical circuit, an energy...
02/01/2011
7723965DC-DC converter circuits, and methods and apparatus including such circuits
Electrical power from an input voltage supply is converted to first and second output voltages of opposite polarities using a single inductor (L) and only four principal switches (S1, S2, S4, S6). In contrast to known circuits, none of th...
05/25/2010
7688044Device for transforming and stabilizing a primary AC voltage for supplying an electric load
A device coupled to a primary AC voltage and a load includes an input, an inductive element coupled thereto, and a generator of a PWM control signal. A capacitor is coupled in parallel to the load. A first bidirectional switch couples the load and primary AC voltage...
03/30/2010
7663349Green technologies: 7less microsystems
The green technology is the technology for the green society having the green safety. The green technology is not only save the resource and recycle the resource but also save the energy and recycling the energy. The core technology of the Green Technology is the 7L...
02/16/2010
7602157Supply architecture for inductive loads
Apparatus and associated systems and methods may relate to a process for supplying unidirectional current to a load, controlling a reverse electromotive force (REMF), capturing inductive energy from the load, and supplying the captured inductive energy to the load. ...
10/13/2009
7538526Switching regulator, and a circuit and method for controlling the switching regulator
A switching regulator includes a first switching element for charging an inductor, a switching circuit for discharging the inductor, a controller circuit for generating a first control signal for controlling the level of an output voltage of the switching regulator,...
05/26/2009
7432689Buck-boost control logic for PWM regulator
A PWM regulator is operated either a buck mode or a boost mode depending on whether the input voltage is above or below the desired regulated output voltage. The technique uses two sawtooth ramps 180 degrees out of phase. Where the two ramps cross each other is a bu...
10/07/2008
7429851Constant voltage power supply circuit
A disclosed constant voltage power supply circuit (1) has an input terminal (Vdd), an output terminal (Vout), a constant voltage power supply unit (2) that generates a constant voltage (Vo1) with a ripple voltage (Vri), and a ripple removing cir...
09/30/2008
7403400Series interleaved boost converter power factor correcting power supply
A power factor correcting power supply includes an input stage power converter and an output stage power converter. The input stage power converter includes a plurality of series connected boost switches and a power factor correction controller. The power factor cor...
07/22/2008
7397151Power supply unit and portable apparatus using the same
A power supply unit comprises a series regulator and a switching DC-DC converter controlled by a PWM signal and connected in parallel with the series regulator, which are switchably enabled by a mode instruction signal depending on the magnitude of a load current. I...
07/08/2008
7394231Current-mode control for switched step up-step down regulators
A switched regulator circuit provides step-up and step-down operation in which the level of the input voltage can be greater, equal to, or less than a preset controlled output voltage. A four switch arrangement or two switch arrangement provides buck, boost, and buc...
07/01/2008
7391190Apparatus and method for three-phase buck-boost regulation
A buck-boost converter is provided. In buck-boost mode, the converter operates in at least three phases. In one phase, the inductor current ramps upward. In another phase, the inductor current ramps downward. In yet another phase, the inductor current remains at rou...
06/24/2008
7379311Inrush current control circuit
An inrush current control circuit includes a first and second control units connected in series, wherein the first and second control units all have a current limiting resistor and switch connected in parallel. The current limiting resistor of the first control unit...
05/27/2008
7372711Circuit and method for reducing voltage spikes due to magnetizing current imbalances and power converter employing the same
For use in a power converter having parallel power trains, a circuit for, and method of, reducing voltage spikes due to magnetizing current imbalances in the power trains and a power converter incorporating the circuit or the method. In one embodiment, the circuit i...
05/13/2008
7372333Monolithic supply-modulated RF power amplifier and DC-DC power converter IC
Embodiments of RF power amplifiers are disclosed that include switched-mode power amplifiers supplied by synchronous buck DC-DC converters. The switched-mode power amplifiers can be used to amplify a limited form of an RF input signal and the supply to the switched-...
05/13/2008
7365972Electronic device with dual heat dissipating structures
An electronic device with dual heat dissipating structures use in an electronic system is disclosed. The electronic device comprises the circuit board having the first and second heat producing surfaces, the major and auxiliary heat dissipating structures disposed o...
04/29/2008
7365661Power converter circuitry and method
A control system and method for simultaneously regulating the operation of a plurality of different types of switching power converters. The system utilizes in regulating the power converters sampled data and nonlinear feedback control loops. ...
04/29/2008
7362077Pre-charge method for isolated boost converter
A boost control module operates semiconductor switches of a boost converter circuit in an avalanche mode to precharge a boost output capacitor. The boost control module comprises a switching module that complementarily transitions a first semiconductor switch and a ...
04/22/2008
7358689Phase-control power controller for converting a line voltage to a RMS load voltage
A phase-control power controller converts a line voltage to an RMS load voltage and includes a phase-control clipping circuit that clips a load voltage to provide the RMS load voltage. The power controller may be in a base of a lamp and connected to a lamp terminal....
04/15/2008
7355368Efficient in-rush current limiting circuit with dual gated bidirectional hemts
A boost converter in accordance with an embodiment of the present application includes an input rectifying bridge adapted to rectify an input AC voltage, a first inductor connected to the input rectifying bridge, a output capacitor coupled to first inductor for conn...
04/08/2008
7352544Method and apparatus for providing a remedial strategy for an electrical circuit
A method and electrical circuit for dynamic reconfiguration of a DC-to-AC inverter comprising first and second power rails where each the rails has a power source. The method comprises monitoring the first and second power rails for short-circuit failure; and upon f...
04/01/2008
7349813Fault tolerant power system architecture for fluid flow measurement systems
To provide a fault-tolerant architecture to supply electrical operating power in fluid flow measurement applications, apparatus and associated systems, computer program products, and methods include an intelligent power module with redundant and electrically indepen...
03/25/2008
7342386Multiphase power converter having balanced currents
A power converter includes multiple phase circuits, each phase circuit includes a power switch for delivering power to an output of the power converter, a current sensor connected to the power switch for sensing a current in the power switch, a duty cycle controller...
03/11/2008
7339361Multi-phase DC-DC converter using auxiliary resistor network to feed back multiple single-ended sensed currents to supervisory controller for balanced current-sharing among plural channels
A multi-phase DC-DC converter incorporates auxiliary resistor networks to feed back to the converter's supervisory controller voltages representative of secondary sensed currents associated with primary currents sensed relative to the common nodes of the respective ...
03/04/2008
7336059System and method for charging and discharging a superconducting coil
A system and method for charging and discharging a superconducting coil. The system comprising a boost converter coupled between a low-voltage bus and a high voltage bus, and a buck converter coupled between the high-voltage bus and the coil. The system being config...
02/26/2008
7332897DC-DC converter
A DC-DC converter includes a main inductor connected to an input voltage, a main switching element connected in series to the main inductor, a main diode connected to the main inductor and a load, and a main capacitor connected to the main diode and the load, the DC...
02/19/2008
7330359Power supply unit
The present invention is directed to a power supply unit that provides large power supply to the load. The voltage detector 51 generates a voltage detection signal by detecting the voltage generated at the output terminals 21, 22. The current detector ...
02/12/2008
7319313Photovoltaic DC-to-AC power converter and control method
An apparatus and method of control for converting DC (direct current) power from a solar photovoltaic source to AC (alternating current) power. A novel DC-to-AC power converter topology and a novel control method are disclosed. This combination of topology and contr...
01/15/2008
7317304Inductive load driving device
An inductive load driving device includes two inductive loads (20A, 20B) connected to a power source (21), two switching elements (15A, 15B), which are connected in series to the two inductive loads, respectively, their on/off are ...
01/08/2008
7315153Switching power supply in an integrated circuit having a comparator with two threshold values, a synchronization input and output, voltage feedback and efficient current sensing
A switching power supply circuit in which a series circuit comprising a resistive element and a capacitive element is provided in a parallel configuration with an inductor which supplies a load current to a load circuit, a voltage comparator having first and second ...
01/01/2008
7313034Low supply voltage temperature compensated reference voltage generator and method
A reference voltage generator uses a conventional forward junction voltage generating device and a conventional thermal generator to generate a thermal voltage. The forward junction voltage and the thermal voltages have respective thermal sensitivities that act oppo...
12/25/2007
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