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7629780 |
Power supply unit and printing apparatus with a supplemental power supply unit
A power supply unit and a printing apparatus, including a first power supply unit and a second power supply unit. The second power supply unit accumulates a power from an outlet and converts an...
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7629781 |
Multi-output switching power supply
A multi-output switching power supply of the present invention includes: a series resonant circuit which is connected in parallel with a first switching element or a second switching element, and...
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7629779 |
Multiple output multiple topology voltage converter
In some embodiments, a three-switch dual output buck converter includes a converter circuit having N+1 switch circuits, the converter circuit being configured to receive an input voltage and to...
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7622901 |
System power supply apparatus and operational control method
A system power supply apparatus includes a first constant voltage circuit that generates and increases a voltage up to a first constant level when receiving a first control signal. A second...
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7619903 |
Switching mode power supply and a method of operating the power supply in a power save mode
A switching mode power supply and a method of operating the power supply in a power save mode. The switching mode power supply includes a first PWM controller and a second PWM controller that are...
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7619399 |
Apparatus to generate high voltage using digital control and method thereof
An apparatus to generate a high voltage includes an outputting part having a power transforming part formed with a primary and a secondary coil, a switching part to control an output voltage...
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7615979 |
Flexible power converter and simplified process controller
Flexible power converter and simplified process controller capable of being configured for a variety of applications with minimal effort. The power converter has a plurality of power switches that...
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7605495 |
Dual supply circuit
A circuit intended to provide two D.C. voltages of inverted polarities based on an A.C. voltage, comprising: two capacitors having their respective electrodes connected to two terminals intended to...
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7586212 |
Multi-output power supply apparatus
The present invention provides an efficient multi-output power supply apparatus that enables a reduction in the on voltage of a main switch in a step-down power supply circuit or the like over a...
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7583066 |
Method of operating a DC/DC up/down converter
A method for an up-down converter which is based on a buck converter during the current down-conversion phase (Φ 2 , Φ 3 and Φ 5 , Φ 6 , respectively) of the coil (L 1 ) supplies an output (B)...
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7564229 |
Method and apparatus for power conversion and regulation in a power converter having a plurality of outputs
Techniques are disclosed to control a power converter with multiple output voltages. One example regulated power converter includes a an energy transfer element coupled between a power converter...
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7560913 |
Input-tracking, automatic output-margining method and system
An input-tracking and automatic output-margining system and method including: a logic board having a first load, a second load, and a first regulator disposed thereon; and a power supply having a...
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7560914 |
Current-fed multiple-output power converter
A power converter is disclosed. According to one embodiment, the power converter includes a first stage comprising a current source and a second stage comprising n output circuits for converting...
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7558556 |
Adaptive radio transceiver with subsampling mixers
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
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7550875 |
Power converter and related method capable of providing multiple output voltages
A power converter includes an inductor, first through fourth switches, and a control device. The first switch is coupled between a first end of the inductor and ground, the second switch is coupled...
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7548799 |
Powered device including a detection signature resistor
A method is provided that includes receiving a detection voltage at a powered device from a powered network, applying the detection voltage to an external resistor to provide a detection signature...
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7542309 |
Voltage stabilizer circuit of forward converter
A voltage stabilizer circuit of forward converter is disclosed to include a transformer, a first switch, a rectifier, an error amplifier, a control circuit, and a driving circuit. The control...
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7518263 |
Time delay control scheme for a power supply with multiple outputs
A time delay synchronous control scheme for a power supply, which has multiple outputs and tight output regulations, is provided. The switching mode power supply includes (1) a front-end DC/DC...
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7511463 |
Multiple output buck converter
In some embodiments, a three-switch dual output buck converter includes a converter circuit having N+1 switch circuits, the converter circuit being configured to receive an input voltage and to...
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7489484 |
Protective device for a controlling system of a sewage pump
A protective device for a controlling system of a sewage pump has a protective circuit to protect a start capacitor and to avoid the start capacitor from burnout when an overload is occurred by...
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7466114 |
Voltage converter
A voltage converter comprises an inductive circuit (L) for storing energy during an inductive magnetizing mode and transferring energy during an inductive demagnetizing mode. In addition the...
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7456617 |
System for controlling and monitoring an array of point-of-load regulators by a host
A power control system comprises a plurality of POL regulators, at least one serial data bus operatively connecting the plurality of POL regulators, and a system controller connected to the serial...
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7453243 |
Switching power supply with multiple output voltages and an intermittent oscillation pulse in standby
If an intermittent oscillation pulse in a case in which the power consumption in the standby state is reduced at the maximum is supplied to a connection point from an output port of a microcomputer...
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7440294 |
Power adapter and power supply system using the same
The present invention is associated with a power adapter capable of simultaneously providing a low-level DC voltage and a high-level DC voltage. The power adapter includes a transformer having a...
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7417414 |
Semiconductor device provided with feedback circuit including resistive element and capacitive element
The present invention provides a switching power supply circuit capable of stabilizing an output voltage as well as increasing a response speed of the output voltage by improving a phase margin of...
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7417878 |
Distributed power supply and method of recovering from error
A distributed power supply is incorporated in a device including a plurality of PCB. An on-board power supply is provided in the distributed power supply. The on-board power supply individually...
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7400120 |
Constant voltage control device
A first output voltage Vcc is obtained via a first switching element from an external power supply, and a second output voltage Vme via a second switching element cascade-connected to the first...
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7391197 |
Apparatus for regulating output voltages with a current conversion module and analog to digital converter
An apparatus for regulating output voltages is used to regulate and output DC voltages, and can output a plurality of DC voltages through a simple structure. The apparatus for regulating output...
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7389087 |
Adaptive radio transceiver with filtering
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
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7385377 |
Voltage down-converter with reduced ripple
A voltage-down converter for providing an output voltage lower than a power supply voltage of the converter is proposed. The converter includes voltage regulation means for obtaining an...
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7378823 |
Multi-output type DC/DC converter with a constant on time interval in a steady state
In a multi-output type DC/DC converter, a controller controls, in accordance with first and second output voltages, turning on/off of a switch circuit and selection in an output selection circuit....
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7372239 |
Multi-output type DC/DC converter
Disclosed a multi-output type DC/DC converter including: a reactor connected to a direct-current power supply; a first switching circuit composed of switches to apply a current to the reactor; a...
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7365522 |
Multiple output stage converter and operating method thereof
A multiple output stage converter (MOSC) and an operating method thereof are provided. The MOSC includes a first transistor, a second transistor, a third transistor, and a logic control module. A...
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7355371 |
Voltage regulator and method thereof
A voltage regulator. A first analog to digital converter generates first data according to a first output voltage. A second analog to digital converter generates second data according to a second...
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7350435 |
Motor, especially a gear motor or a selector motor of a transmission actuating system, and method for detecting the moving direction of a motor
The invention relates to a method for determining the moving direction of a motor, especially an electric motor of a transmission actuating system for gear selection and/or shifting, whereby at...
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7340627 |
Method and system for supplementing current during enumeration of a USB device
A method and device for supplementing current from the USB bus for enumerating USB devices that require additional current beyond that allowable by USB bus specification. A chargeable power source,...
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7327124 |
Control apparatus and method for a boost-inverting converter
A plurality of switches, an inductor and two capacitors are configured to be a boost-inverting converter. To operate the converter in a boost-inverting mode, a control apparatus and method switch...
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7317304 |
Inductive load driving device
An inductive load driving device includes two inductive loads ( 20 A, 20 B) connected to a power source ( 21 ), two switching elements ( 15 A, 15 B), which are connected in series to the two...
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7298116 |
Multiple-output dc-dc converter
The multiple-output DC-DC converter comprises an inductor (L) and a main switch (S 0 ) which periodically couples a DC-input voltage (Vin) to the inductor (L). Each one of a multitude of loads (L...
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7276886 |
Dual buck-boost converter with single inductor
A dual output buck-boost power converter operates with a single inductor to achieve high efficiency with automatic or inherent load balancing. Switches associated with the opposite polarity outputs...
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7276885 |
Apparatus and method for power sequencing for a power management unit
A PMU that includes LDOs is provided. The PMU also includes, for each LDO, a corresponding reference circuit that provides a reference voltage for the LDO. Further, the PMU includes a central bias...
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7274175 |
Multiple output power supply that configures itself to multiple loads
A two stage multiple output power supply device is capable of outputting programmable DC voltages onto multiple outputs. The first stage receives an AC supply voltage and outputs a DC supply...
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7256571 |
Power supply dynamic set point circuit
A regulator set point circuit. The circuit includes a voltage regulator configured to produce an output voltage. An adjustable voltage source is coupled to the voltage regulator via a feedback...
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7256568 |
Single inductor multiple-input multiple-output switching converter and method of use
A single inductor multiple-input multiple-output (SI-MIMO) switching converter time-multiplexes different input power sources through only one inductor to provide multiple regulated output...
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7253592 |
DC voltage converter and method for converting a DC voltage
A DC voltage converter having a plurality of outputs and a method for converting a DC voltage into a plurality of output-side DC voltages is disclosed. A control unit is used to drive a first and a...
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7245090 |
Switching LED driver with temperature compensation to program LED current
The present invention provides a LED driver for control the brightness of the LED. An energy-transferred element and a switch are connected in series with the LED for controlling the current of the...
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7245089 |
Switching LED driver
The present invention provides a LED driver for controlling the brightness of the LED. An inductor and a switch are connected in series with the LED for controlling the current of the LED. A diode...
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7245888 |
Phone energy management for low battery voltages
The present invention provides a power supply arrangement with a DC-to-DC converter ( 10 ) for providing at least one supply voltage to a load ( 20, 30, 40 ) from an energy source ( 11 ). The...
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7235958 |
Apparatus and method to synchronize switching frequencies of multiple power regulators
A power supply has a plurality of switching regulators providing a like plurality of regulated output voltages. The oscillators of the switching regulators are synchronized with one another by a...
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7205750 |
Power supply for positive and negative output voltages
A predetermined positive output voltage to be obtained by raising an input power supply voltage is outputted by switching a switch connected in series with a coil in a switching power supply...
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