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7411377 |
Adaptive control loop
A duty cycle estimator determines a duty cycle for controlling a regulated output of an output regulator. The output regulator is responsive to the duty cycle for controlling a transfer of energy...
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7408388 |
Switching power supply device, semiconductor integrated circuit device and power supply device
There are provided a switching power supply device performing a stable operation with fast response, a semiconductor integrated circuit device, and a power supply device. A capacitor is provided...
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7408333 |
Power supply apparatus
A power supply apparatus for supplying an output voltage to a load is provided, which comprises a power output unit, a feedback unit and a control unit. The power output unit adjusts and supplies...
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7408332 |
Intelligent soft start for switching regulators
A circuit, method, and system for intelligently soft starting switching regulators are provided. The circuit, method, and system provide for a switching circuit operable to couple an input voltage...
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7408329 |
Power supply unit for gas discharge processes
A method of generating an output DC voltage of a gas discharge process voltage supply unit, in which in a first voltage transformation stage a first DC voltage is transformed into a second DC...
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7408328 |
Information handling system including a power supply unit with a switching regulator that reduces transient load release
An information handling system (“IHS”) includes a system board and a power supply unit coupled to the system board. The power supply unit includes a switching power regulator. The switching...
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7405549 |
Soft start circuit, power supply unit and electric equipment
A soft start circuit includes a constant current source for generating a constant current, a first current mirror circuit for generating from the constant current a first mirror current, a second...
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7405548 |
Circuit for generating a supply voltage
Circuit for generating a supply voltage having a voltage input connected to a voltage regulator that generates a first supply voltage and to a low-noise voltage regulator that generates a low-noise...
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7403200 |
Current sensing bi-directional switch and plasma display driver circuit
A bi-directional switch comprising first and second semiconductor switching devices, a current sensor connected in series with the switching devices, thereby forming a series circuit, a driver...
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7402987 |
Low-dropout regulator with startup overshoot control
The present invention provides an LDO regulator having a greatly improved overshoot characteristic through the use of an output voltage based feedback loop. More specifically, in the invention, one...
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7402986 |
Power supply circuit for portable battery powered device
The present invention relates to battery power peripheral devices such as MP3 players which are also periodically connected to another power source such as a mains wall socket or USB cable power...
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7400163 |
Dead time control circuit capable of adjusting temperature characteristics of dead time
In a dead time control circuit, a delay circuit is connected to an input terminal and adapted to delay signals therethrough by a delay time corresponding to a dead time. A logic circuit has a first...
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7400127 |
Method for regulating an output signal and circuit therefor
A regulator circuit and a method for compensating for sag in the output signal of the regulator circuit. A first comparator is coupled to an input of an oscillator, which oscillator outputs a clock...
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7400125 |
Power supply circuit with series regulator
A series-regulator type of power supply circuit is provided. In the circuit, the emitter and collector of a transistor are connected to power input/output terminals. A control circuit controls a...
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7400124 |
Apparatus and methods for regulated voltage
An electronic system according to various aspects of the present invention includes a memory and a supply regulation circuit having a regulated output to provide a selected voltage level. In one...
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7400118 |
High efficiency single-inductor dual-control loop power converter
A high efficiency single-inductor dual-control loop power converter (SIDL) is proposed for converting unregulated DC input into regulated DC output to a power load. The SIDL includes:
an energy...
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7397228 |
Programmable on-chip sense line
Disclosed herein is a system for controlling power supply voltage to an on-chip power distribution network. The system incorporates a programmable on-chip sensing network that can be selectively...
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7394234 |
Power supply circuit and test apparatus
A power-supply circuit for supplying voltage to a load while freely selecting positive voltage and negative voltage using a single power supply has a power supply that generates power-supply...
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7394233 |
High efficiency modulated power supply
A modulated power supply comprises a power switching stage having at least one power switching device for generating a power signal in response to an input modulating signal. A current source is...
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7391627 |
Power converter
A power converter comprises an inductor (LP) and a controllable switch (CF) coupled to the inductor. A switch controller ( 1 ) supplies a periodic switching signal (VC 1 ) which has a repetition...
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7391196 |
In system analysis and compensation for a digital PWM controller
A system for analyzing the operation of a switching power converter includes a digital controller for receiving an analog signal representing the output DC voltage of the power converter for...
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7391195 |
Self-oscillating boost DC-DC converters with current feedback and digital control algorithm
In a method and system for controlling a direct current to direct current (DC-DC) converter includes an inductor coupled to receive a voltage input at an input terminal. A diode is coupled in...
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7391193 |
Voltage regulator with bypass mode
A step down voltage regulator with bypass comprised of devices designed to operate over a maximum rated voltage lower than a supply voltage. The regulator includes an output regulation device...
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7388444 |
Switching regulator duty cycle control in a fixed frequency operation
A clock oscillator system for use in providing the switching regulator duty cycle control in a fixed frequency (no cycle skipping) operation is provided. In one embodiment, the circuit according to...
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7388358 |
Method and apparatus for a pulse width modulated DC-DC converter
A pulse width modulated pulse signal is generated and its duty cycle adjusted according to at least two different schedules, for example, a coarse tuning cycle and a fine tuning cycle. The target...
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7388357 |
Method and apparatus for reducing input supply ripple in a DC-DC switching converter
A power system comprising a front end regulator coupled to an input supply voltage (Vin) and providing a regulated input supply voltage (Vbp). The front end regulator compares the input supply...
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7388354 |
Methods and devices for low noise current source with dynamic power distribution
Systems and methods for increasing driver power dissipation efficiency in a low noise current supply utilizing a power supply and a voltage regulator to power an output current regulator. An analog...
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7385379 |
No load to high load recovery time in ultraportable DC-DC converters
A voltage converter that recovers quickly from a transition from a power save mode where the load is relatively low to a fully operation mode where the load is relatively high. The converter...
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7385375 |
Control circuit for a depletion mode switch and method of operating the same
A control circuit for a power converter employing a depletion mode switch and a method of operating the same. In one embodiment, the control circuit includes a controller configured to control the...
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7382303 |
Non-perturbing power supply margin controller
A power supply margin controller may alter the voltage of a control signal used to control the output voltage of a power supply. The controller may include a digital-to-analog converter having an...
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7382116 |
Semiconductor device configured to control a gate voltage between a threshold voltage and ground
A pair of upper and lower semiconductor switching elements can switch between the conductive state and the non-conductive state when control voltages vary. A controller controls the levels of the...
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7382115 |
Apparatus for converting DC power and method of the same
Embodiments according to the present invention can enhance an efficiency of an apparatus or method capable of converting power of a system. An apparatus for converting power includes a load state...
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7382114 |
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...
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7378825 |
DC/DC converter
A DC/DC converter is supplied such that the desired output setting voltage can be obtained as the load-side output, even when the difference between the power supply voltage and the output setting...
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7378824 |
Voltage converter capable of avoiding voltage drop occurring in input signal
A voltage converter for providing an output voltage signal at an output port according to an input voltage signal is disclosed. The voltage converter comprises a feedback circuit, a transmission...
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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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7378822 |
Switching regulator slope compensation generator circuit
A slope compensation circuit that provides slope compensation in a switching regulator is provided. The slope compensation circuit preferably is adapted to receive an oscillator pulse train from a...
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7375503 |
System for current sensing in switched DC-to-DC converters
A system for sensing the supply current of a switched DC-to-DC converter. The system includes a first circuit that senses a first voltage that is proportional to the supply current, wherein the...
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7373527 |
System and method for interleaving point-of-load regulators
A system and method for providing interleaving point-of-load (POL) regulators such that each regulator's switching cycle is phase displaced with respect to those of other POL regulators in the...
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7368897 |
Load adaptive power converter
In some embodiments, a switching mode power converter has an input and an output. The switching mode power converter may be configured to transition between a continuous conduction mode at a first...
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7365997 |
Synchronous switching control circuit for power converters
The present invention provides a synchronous switching control circuit for variable switching frequency power converters. It comprises a first circuit to generate a first signal in response to an...
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7365525 |
Protection for switched step up/step down regulators
A four switch voltage converter is regulated for buck mode and boost mode under constant frequency valley-peak current mode control. Protection circuits are responsive to output voltage and...
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7362081 |
Low-dropout regulator
A low-dropout regulator is provided that includes a filter and a bandgap reference generator. The filter includes a resistive device and a capacitor. The bandgap reference generator is coupled to...
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7362077 |
Pre-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...
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7359219 |
Power supply
A power supply, including a step-up converter, a resonant converter, and control unit. The step-up converter is connected to the resonant converter; the step-up converter and the resonant converter...
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7358710 |
Temperature-compensated inductor DCR dynamic current sensing
A resister network having a negative temperature coefficient (NTC) may be utilized to create a temperature compensated equivalent resistance “R” for a current sensing RC network used in...
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7358707 |
Information handling system including a power supply unit with a power converter for supplying power to multiple outputs
An information handling system (IHS) includes a system board and a power supply unit, coupled to the system board. The power supply unit includes a power converter for supplying power to a first...
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7355375 |
Dynamic bias circuit for use with a stacked device arrangement
A regulator circuit includes a first transistor coupled to a supply voltage and a second transistor coupled between the first transistor and an output node. The regulator circuit also includes a...
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7355374 |
Direct current voltage transformer
A DC voltage transformer includes an oscillator, which can be controlled in terms of a characteristic such as its phase and/or frequency, and a modulation circuit that provides a periodic or random...
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7355373 |
DC-DC converter
In an up-converter a switching element is controlled both by an integrated control circuit and by a secondary winding on an inductor. High power factor and low total harmonic distortion are...
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