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Document Title |
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7629783 |
Ultra low dropout voltage regulator
An ultra low dropout voltage regulator, which separately supplies operating power for internal circuits, but controls the operating power to perform the operation of a voltage regulator chip, so...
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7626368 |
Method and apparatus for providing a regulated voltage at a voltage output
An apparatus for supplying a glitch-free, regulated voltage at a voltage output includes a main transistor, which is connected between an intermediate potential and the voltage output, a bypass...
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7615982 |
Power converter able to rapidly respond to fast changes in load current
According to an embodiment, in a DC/DC converter delivering current to load, a method is provided for rapidly responding to changes in load current. The method includes: detecting fast changes in...
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7576524 |
Constant voltage generating apparatus with simple overcurrent/short-circuit protection circuit
In a constant voltage generating apparatus where an output circuit is controlled in accordance with a control voltage, a voltage detection signal generating circuit generates a voltage detection...
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7560916 |
Voltage-locked loop
A system and method providing output voltage control in a power supply circuit. Various aspects of the present invention may comprise at least a first module adapted to receive an input DC voltage...
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7557549 |
Automatic output mode select for an actuator controller
Methods and systems are disclosed for automatically controlling the mode of an output that can be coupled to one of several types of actuators or the like. In one illustrative embodiment, an...
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7554311 |
Hybrid charge pump regulation
Techniques for reliably and efficiently generating an output voltage for use within an electronic device, such as a memory system, are disclosed. A voltage generation circuit generates the output...
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7545131 |
Transient processing mechanism for power converters
Transient processing mechanisms for power converters. Error generation circuitry in a power converter may generate an error signal based on the difference between a power converter output voltage...
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7541786 |
Voltage regulator
A voltage regulator including a voltage regulation unit and an over driving unit is provided. The voltage regulation unit outputs a corresponding output voltage according to an input voltage. The...
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7538528 |
Constant power foldback mechanism programmable to approximate safe operating area of pass device for providing connection to load
System and methodology for supplying power to a load using a pass device for connecting the load. A current limit circuit prevents current supplied to the load from exceeding a current threshold. A...
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7521907 |
Controller for a power converter and method of operating the same
A controller for use with a power converter including a switch configured to conduct to provide a regulated output characteristic at an output of the power converter, and method of operating the...
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7511464 |
Voltage regulator
Provided is a voltage regulator in which a rush current of an output circuit can be limited and a rise time of an output voltage is short. The voltage regulator includes a first output current...
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7508179 |
Dual input prioritized LDO regulator
An LDO regulator includes two linear regulator circuits and an internal priority logic scheme that favors generating a regulated output voltage using a regulated supply voltage over an unregulated...
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7466117 |
Multi-function voltage regulator
A multi-function voltage regulator for both DCDC function and LDO function includes a first transistor, a second transistor and a voltage control unit. The first transistor has a first terminal and...
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7459891 |
Soft-start circuit and method for low-dropout voltage regulators
A low drop-out voltage regulator having soft-start. A low drop-out regulator circuit is provided having an input node, an output node, a power FET connected by a source and drain between the input...
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7456619 |
Power supply circuit
A power supply circuit includes a standard voltage generator, a regulator, a capacitor and a discharging circuit. The standard voltage generator is configured to generate a standard voltage. The...
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7453239 |
Charging apparatus having a switching element for controlling charging power
A charging device that may perform charging with larger current is provided. The charging device comprises a switching element for increasing or decreasing charging power, a PWM controlling circuit...
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7449869 |
Digital current mode controller with low frequency current sampling
The present invention is directed to a digital controller for adjusting the duty ratio a pulse width modulation control signal used to control a power switch of a switch mode power converter....
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7446515 |
Compensating NMOS LDO regulator using auxiliary amplifier
An LDO (low dropout) regulator including a pass transistor having a first electrode coupled to produce an output voltage of the LDO regulator, a control electrode, and a second electrode coupled to...
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7446491 |
Intelligent power management for actuators
A system and method is disclosed for intelligent power management of actuators such as those used in papermaking. Multiple power supply units are connected to a common power bus. The power bus is...
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7429852 |
Constant voltage circuit capable of quickly responding to a sudden change of load current
A constant voltage circuit which is capable of quickly responding to a sudden change of an output voltage includes an output transistor, and first and second error amplifiers. The output transistor...
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7405545 |
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...
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7402985 |
Dual path linear voltage regulator
A voltage regulator comprising two feedback loops for regulating a load voltage, where the first feedback loop comprises a pass transistor to source current to the load, and the second feedback...
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7400119 |
Modular high voltage power supply for chemical analysis
A high voltage power supply for use in a system such as a microfluidics system, uses a DC-DC converter in parallel with a voltage-controlled resistor. A feedback circuit provides a control signal...
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7385376 |
Voltage regulator with high voltage protection
A method for regulating a voltage in an integrated circuit device includes providing a first regulated output based upon a first voltage input range and subsequently receiving the first regulated...
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7365451 |
Power converter
A power converter that can continue to operate after suffering a partial failure. The power converter includes multiple array transformers; normally-on switches connected respectively in series...
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7355372 |
Power control system capable of balancing output currents
A power control system includes a voltage control circuit and a plurality of balance circuits. The voltage control circuit controls a voltage level at an output of the power control system...
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7327130 |
Current sense method
A current-sense circuit for measuring a load current in a switching power regulator may operate independently of process variation and temperature, and measure bi-directional load currents without...
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7317306 |
Nonlinear adaptive voltage positioning for DC-DC converters
The present invention provides a nonlinear adaptive voltage positioning DC-DC converter method and apparatus that enable improved voltage transient response under changing current conditions for a...
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7279872 |
Circuit and method for processing a supply voltage with voltage peaks
A circuit for processing a supply voltage with a voltage peak to obtain an output signal with reduced or eliminated voltage peak, comprises a first capacitance and a second capacitance, wherein a...
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7277305 |
Power converter
A heavy duty cycle power converter ( 2 ) has current mode control in which the closed loop control is carried out by a controller ( 5 ) using a desired signal ( 11 ) which is a function of the...
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7253595 |
Low drop-out voltage regulator
A low drop-out voltage regulator having a pass device (Mp), an error amplifier (M 1 -M 51 ) and a double regulation loop including DC feedback loop (R 1 , R 2 ) and an AC feedback loop (Rf, Cf)...
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7248026 |
Single-pin tracking/soft-start function with timer control
A voltage regulator includes a voltage divider connected between a soft-start pin and the voltage regulator's error amplifier. The voltage divider has the same divider ratio as that of the voltage...
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7227343 |
Linear voltage regulator with selectable output voltage
A linear voltage regulator provides a selectable output voltage to a load. The linear voltage regulator includes: a regulating circuit including an input terminal for receiving an input voltage, an...
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7135842 |
Voltage regulator having improved IR drop
A regulated power source for supplying power to an external circuit includes a voltage sensing circuit and a voltage regulator. The voltage sensing circuit generates a feedback voltage by comparing...
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7119524 |
Control of DC/DC converters having synchronous rectifiers
A DC to DC power converter includes synchronous rectifiers which respond to a control waveform. Negative current from a load into the power converter is prevented by increasing the converter output...
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7106042 |
Replica bias regulator with sense-switched load regulation control
A regulator circuit including output loading sense circuitry where the output loading sense circuitry comprises, in one example, a resistor in the feedback leg of the replica bias regulator, a...
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7102421 |
Dynamically adjustable on-chip supply voltage generation
A voltage regulation scheme for an on-chip voltage generator includes a voltage sensing circuit (VSC) and a configurable buffer circuit (CBC) to regulate the on-chip voltage generator. The CBC...
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7088082 |
Regulator with variable capacitor for stability compensation
A voltage regulator with a variable compensation capacitor is capable of driving a large variable dynamic current load. The regulator includes an error amplifier and an output stage amplifier. The...
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7023189 |
Voltage regulator circuit of integrated circuit chip
A voltage regulator circuit for use with an integrated circuit (IC) chip and an external voltage source includes a first transistor and a second transistor. The first transistor has the emitter...
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7012410 |
Regulating system
A regulating system comprises an input terminal for applying an input voltage, and an output terminal for providing an output voltage. A semiconductor element is connected between the input...
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7000128 |
Method and apparatus for reducing capacitive load-related power loss by gate charge adjustment
The present invention increases power efficiency in power FET applications with varying loads. A constant frequency mode can be used without detracting from efficiency. This is accomplished by...
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6989660 |
Circuit arrangement for voltage regulation
The invention specifies a circuit arrangement for voltage regulation in which, in addition to a control loop having a comparator ( 4 ), an output stage ( 3 ) and a feedback path, an auxiliary...
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6989659 |
Low dropout voltage regulator using a depletion pass transistor
A linear low dropout voltage regulator is described that makes use of a depletion mode NMOS pass transistor and of a PMOS transistor in series to the NMOS transistor and connected to its drain. The...
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6984949 |
System and method to selectively prevent movements of an electric vehicle
A method and system for preventing the movements of an electric vehicle in a direction opposite a desired direction are described herein. The electric vehicle comprises an electric motor linked to...
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6980783 |
Apparatus and method of controlling low frequency load currents drawn from a DC source in a telecommunications system
A circuit controls the low frequency load currents drawn by components of telecommunications systems. The circuit includes a power converter, a first sense circuit, a second sense circuit, a...
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6969981 |
Voltage regulator power management apparatus
Quiescent currents in a circuit that includes a regulator are reduced by disabling selected portions of the circuit. A window comparator is selected activated to evaluate the input voltage such...
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6965222 |
Current controller for inductive load
A current controller includes a pulse width modulation signal outputting circuit, a saw-tooth-wave signal generating circuit, a command value smoothing circuit, a detection value amplifying...
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6960906 |
Switching power supply
The present invention provides a switching power supply which reduces power consumption in a standby state and improves power supply efficiency. At the time of starting a standby mode in which the...
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6922041 |
Apparatus for and method of adjusting a switching regulator output for a circuit having a pre-charge voltage
A switching regulator target voltage is adjusted to a first value corresponding to a pre-charge voltage that is present at a regulator output terminal. The switching regulator responds to a...
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