Electricity: power supply or regulation systems inventions 12/06

20060290327 - Electronic device and electronic device system: An electronic device includes electronic components, including: a power switching unit to output a power switching signal; a first power input unit to receive first power from one of a plurality of external power devices; a second power input unit to receive second power from one of the external power... Agent: Stein, Mcewen & Bui, LLP

20060290326 - Protocols for reporting power status over multiple buses: An automated power reporting system is provided in one aspect. The system includes one or more devices that can report or transmit power status information over a bus or network. A protocol component utilizes a generalized protocol to process or convert the power status information over the network in order... Agent: Amin. Turocy & Calvin, LLP

20060290328 - Field device with dynamically adjustable power consumption radio frequency communication: A field device for use in an industrial process control or monitoring system includes terminals configured to connect to a two-wire process control loop configured to carry data and to provide power. In one embodiment, RF circuitry in the field device is configured for radio frequency communication having variable power... Agent: Westman, Champlin & Kelly, P.A. International Centre

20060290329 - Power connector having regulating member: A power connector (100) includes a dielectric housing (1) defining a number of passages (14) therein, first and second terminals (21, 22) received in the corresponding passages for power transmission, a detecting terminal (20) received in the corresponding passage for signal transmission and a regulating member (4) with specified constant... Agent: Wei Te Chung Foxconn International, Inc.

20060290330 - Secondary current compensation method: Techniques for correcting for internal resistance losses in the secondary windings of a transformer to reduce errors in output voltage from a high voltage power supply.... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20060290331 - Point-of-load design for high voltage ac power supplies: An electrophotographic document production device having a transformerless high voltage power supply located distal to its load and a transformer at the point of load.... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20060290332 - Integrated circuit capable of balanced polyphase power regulation using redundant feedback circuitry: A method according to one embodiment may include providing a redundant feedback circuit. The method of this embodiment may also include coupling the redundant feedback circuit to a feedback control loop and decoupling a feedback circuit from the feedback control loop. The method of this embodiment may also include calibrating... Agent: Grossman, Tucker, Perreault & Pfleger, PLLC

20060290333 - Switching control circuit and self-excited dc-dc converter: A self-excited DC-DC converter comprises a switching element that chops a direct-current input voltage; a smoothing circuit that smoothes the chopped voltage to generate a DC output voltage; a switching control signal generation circuit that generates a switching control signal for the on/off control of the switching element by comparing... Agent: SocalIPLaw Group LLP

20060290334 - Duty cycle mode switching voltage regulator: One disclosed method includes controlling an output voltage to track a reference voltage by using a feedback loop to monitor an output duty cycle and to maintain an output voltage that is substantially constant relative to the reference voltage.... Agent: Jung-hua Kuo C/o Portfolioip

20060290335 - Inrush current preventing circuit: There is provided an inrush current preventing circuit. The circuit comprises an voltage-controlled type switching device that has an input terminal, an output terminal and a control terminal that limits current between the input terminal and the output terminal by an applied voltage. A first resistor is connected in parallel... Agent: Brinks Hofer Gilson & Lione

20060290336 - Voltage regulator load compensator: One disclosed method involves suppressing ringing on a voltage regulator output by using a load compensator to monitor the output of the voltage regulator. If an output voltage is detected that is greater than a first predefined level, the output voltage is driven lower, and if an output voltage is... Agent: Jung-hua Kuo C/o Portfolioip

20060290337 - Power supply controller method and structure: A power supply controller determines the value of an input power and uses the value of the input power to regulate a value of the output voltage.... Agent: Semiconductor Components Industries, LLC Attn: Robert D. Atkins/law Dept./md 1700

20060284606 - Buck-boost voltage converter: An input switching unit selectively couples a first terminal of an inductor with an input voltage and a ground potential. An output switching unit selectively couples a second terminal of the inductor with an output voltage and the ground potential. A first pulse generating circuit generates a first pulse signal... Agent: North America Intellectual Property Corporation

20060284607 - Slope compensation circuit: A current-mode switching regulator uses a slope compensation circuit that automatically accounts for different inductor values and varying input voltages to generate a slope compensation signal. The slope compensation circuit monitors a voltage across a semiconductor switch to extract an upslope signal that tracks increasing inductor current in the current-mode... Agent: Knobbe Martens Olson & Bear LLP

20060284608 - Controller for dc to dc converter: A method includes starting a time count of a time interval at a start of a state change of a switch of a DC to DC converter; monitoring if the switch is in a skip mode; and disabling the skip mode in response to an expiration of the time interval... Agent: Grossman, Tucker, Perreault & Pfleger, PLLC

20060284609 - Constant-on-time power-supply controller and related system and method: A constant-on-time power-supply controller includes an adder and a control circuit. The adder generates a sum of a sense voltage and a regulated output voltage generated by a filter inductor. The sense voltage is generated by a sense circuit that sources a current to the filter inductor while the inductor... Agent: Bryan A. Santarelli Graybeal Jackson Haley LLP

20060279262 - Two-terminal protecting circuit: An integrated circuit provides a load with back-flow and open-circuit protection and includes a load, a trigger circuit, and a shunt circuit. The integrated circuit provides large-size LED displays having series LED connection with back-flow and open-circuit protection. The shunt circuit of the integrated circuit shunts the back-flow current from... Agent: North America Intellectual Property Corporation

20060279263 - Dc-dc converter device and method for operating the dc-dc converter of a motor vehicle on-board electrical system: A DC-DC converter system having a DC-DC converter including a power transistor and a control unit is provided, which control unit provides control signals for triggering the power transistor. The DC-DC converter is operable in two operating modes: in a first operating mode, the DC-DC converter operates at high efficiency;... Agent: Kenyon & Kenyon LLP

20060279264 - Method circuitry and electronic device for controlling a variable output dc power source: Power control circuitry and method for controlling a variable output DC power source. The power control circuitry may comprise a first comparator to compare a signal representative of an output current level of the variable output DC power source with a threshold level and provide a first output signal in... Agent: Grossman, Tucker, Perreault & Pfleger, PLLC

20060279265 - Communication system for communications carried over power lines: An over-power line communication system has a low impedance circuit unit, which is connected between the power lines, first signal couplers, which are set on the first communication device side to the low impedance circuit unit to electromagnetically couple the power lines with one of signal lines, second signal couplers,... Agent: Buchanan, Ingersoll & Rooney PC

20060279267 - Ic with fully integrated dc-to-dc power converter: In general, in one aspect, the disclosure describes a semiconductor device that includes a functional circuit and a dc-to-dc power converter. The power converter converts, regulates, and filters a DC input voltage to produce a DC output voltage and provides the DC output voltage to the functional circuit. The dc-to-dc... Agent: RyderIPLaw C/o Intellevate

20060279266 - Method and apparatus to reduce maximum power from a power supply with transition region regulation: Techniques are disclosed to regulate the output power of a power supply. An example power supply regulator includes an energy transfer element coupled between an input and an output of a switched mode power supply. A switch is coupled to the energy transfer element at the input of the power... Agent: Blakely Sokoloff Taylor & Zafman

20060279268 - Method for operational amplifier output clamping for switching regulators: A switching regulator includes a feedback network that generates a voltage Vea that is proportional to the difference between the output of the switching regulator and a reference voltage. A comparator is used to compare Vea to a sawtooth voltage to generate a voltage Vpwm. The voltage Vpwm drives a... Agent: Advanced Analogic Technologies

20060279270 - Bandgap reference circuit: A bandgap reference circuit having a low sensitivity to temperature and supplied voltage installs a compensation circuit on a bandgap reference circuit to substitute a prior art that uses a resistor to match the circuit startup purpose and solve the problem of startup error caused by the manufacturing error. The... Agent: Rosenberg, Klein & Lee

20060279269 - Voltage-regulator and power supply having current sharing circuit: The present invention proposes a voltage-regulator and a power supply having a current-sharing circuit. The voltage-regulator capable of current sharing uses an enabling terminal as a current-sharing control interface. A pass transistor supplies an output voltage and an output current to an output terminal of the voltage-regulator. A feedback control... Agent: J C Patents, Inc.

20060273768 - Light loading control circuit for a buck-boost voltage converter: A light loading control circuit operates a switching circuit of a buck-boost voltage converter alternately in a plurality of phase cycles and a sleep period. Each phase cycle has a rising phase, a falling phase, and a maintaining phase. In the rising phase, the switching circuit is operated to increase... Agent: North America Intellectual Property Corporation

20060273767 - Method and apparatus for high-efficiency dc stabilized power supply capable of effectively reducing noises and ripples: Methods and apparatuses for generating DC stabilized power are described. A DC stabilized power supply apparatus includes a voltage switching control circuit and first and second power supply circuits. The voltage switching control circuit generates first and second voltage switching signals in accordance with at least one voltage switching signal.... Agent: Ivan S. Kavrukov Cooper & Dunham LLP

20060273769 - Pulse modulation system with nonlinear ramp: A pulse-width-modulation (PWM) control system with nonlinear ramp is disclosed. A nonlinear ramp generator generates a nonlinear ramp varied with the duty (Vout/Vin) in a waveform signal, which could be a logarithm ramp, an exponent ramp, a multi-piecewise-linear ramp, a power ramp or a combination of above. The slope of... Agent: Birch Stewart Kolasch & Birch

20060273770 - Uniform converter output voltage distribution power system: A uniform converter output voltage distribution power system evenly controls the individual output voltages of DC-to-DC parallel-input series-output connected converters using a uniform output voltage distribution controller including a generator for generating respective error signals from the converter output voltages using a common distribution reference signal for providing respective converter... Agent: Carole A. Mulchinski M1/040

20060273771 - Creating additional phase margin in the open loop gain of a negative feedback amplifier system: A low-dropout voltage (LDO) regulator that creates a zero in the open loop gain using a relatively small-sized current control element to divert part of the supplied load current through a “zero” resistor before adding it to the output load. The main part of the output load is passed through... Agent: Bever Hoffman & Harms, LLP Tri-valley Office

20060273773 - Method and apparatus for trimming current limit and frequency to maintain a constant maximum power: A method which regulates a power supply is disclosed. In one aspect of the invention, the method includes sensing an excess control current through a control terminal with a control current sensor circuit. A transistor is switched with a control circuit in response to the control current sensor circuit and... Agent: Blakely Sokoloff Taylor & Zafman

20060273772 - Pfm-pwm dc-dc converter providing dc offset correction to pwm error amplifier and equalizing regulated voltage conditions when transitioning between pfm and pwm modes: To prevent a voltage glitch in the regulated DC output voltage of a PWM/PFM DC-DC converter when switching between PFM and PMW modes, the error amplifier of the converter's PWM regulation path is provided with a DC voltage offset correction mechanism. This mechanism “zeros-out” DC voltage offsets that may be... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20060273774 - Control circuit for monitoring and maintaining a bootstrap voltage in an n-channel buck regulator: A control circuit is incorporated in a switching regulator for monitoring and maintaining a bootstrap voltage to allow the switching regulator to operate at or near 100% duty cycle. The control circuit includes a circuit receiving the bootstrap voltage and generating a monitor voltage, a comparator circuit receiving the monitor... Agent: Patent Law Group LLP

20060273775 - Power supply for a load control device: A power supply for a load control device is disposed in series with an AC voltage source and a load and generates a substantially DC voltage for powering a controller of the load control device. The power supply is operable to provide substantially all voltage provided by the AC voltage... Agent: Ostrolenk Faber Gerb & Soffen

20060273776 - Power regulation for field instruments: Effective power regulation may be achieved for a field instrument that derives power from a communication signal. In particular aspects, a system and process for power regulation include the ability to receive a communication signal and adjust the voltage supplied to a power converter based on the current of the... Agent: Fish & Richardson P.C.

20060273777 - Direct-current stabilized power supply device: In a direct-current stabilized power supply device provided with an output transistor that receives an input voltage from the outside and a control circuit that controls the output transistor so that an output voltage of the direct-current stabilized power supply device is stabilized, there is provided a voltage supply circuit... Agent: Birch Stewart Kolasch & Birch

20060273778 - Low loss dc/dc converter: A direct current to direct current converter includes first and second switches to output voltages on first and second output terminals in response to appropriate turn-on voltages at first and second control terminals. The first control terminal may selectively communicate with one of N>2 different voltages. The converter may include... Agent: Fish & Richardson P.C.