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7323854 |
Zero cancellation in multiloop regulator control scheme
Control loops in a voltage regulator can be stabilized using minimal silicon area. A current limit signal, generated by a current limit control loop in the voltage regulator, can be divided to...
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7304458 |
Regulator circuit
A regulator circuit is offered to resolve a problem that an unnecessary operating current flows in a semiconductor integrated circuit in a low power consumption state. Channel width to channel...
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7292015 |
High efficiency, high slew rate switching regulator/amplifier
A regulating apparatus having an output node and being operative for regulating the voltage level at the output node in response to a reference signal provided as an input to the regulating...
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7285942 |
Single-transistor-control low-dropout regulator
A low-dropout regulator with a single-transistor-control providing improved transient response and stability is disclosed. The single-transistor-control provides a dynamic resistance at the output...
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7274180 |
Constant voltage outputting method and apparatus capable of changing output voltage rise time
A constant voltage outputting apparatus includes an input terminal, an output terminal, a control unit, a plurality of output control transistors, and a switching unit. The input terminal receives...
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7274176 |
Regulator circuit having a low quiescent current and leakage current protection
A voltage regulator includes first and second transistors arranged in parallel and configured to regulate current flow to an output node, and a sensing circuit configured to sense a voltage level...
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7262583 |
Apparatus for providing regulated power to an integrated circuit
A regulator system for supplying power to a microelectronic device is disclosed. The system includes an array of a plurality of regulators, where each regulator provides a portion of power required...
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7262587 |
Circuit and method for controlling DC-DC converter
A control circuit for suppressing generation of inrush current during activation of a DC-DC converter, which controls output with control signals. The control circuit includes first and second...
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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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7227342 |
Extremely 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...
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7224156 |
Voltage regulator for use in portable applications
A voltage regulator includes a first stage capable having a first current flowing through it. A second stage has a second current. A third stage is capable of outputting an output voltage and has a...
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7221135 |
Method for regulating the time constant matching in DC/DC converters
A method regulates the time constant matching of a DC/DC converter phase, further to a variation of a load applied to an output of said phase. Such phase being associated with a coil network, with...
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7218084 |
Integrated circuit with modulable low dropout voltage regulator
A low dropout voltage (LDO) regulator comprises an output stage (EtS) of the amplifier (AMP), which has a main output and n auxiliary outputs which can respectively deliver a main control voltage...
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7208919 |
Method and apparatus for digitally regulating an output voltage using noise-shaped component selection
Provided is a digitally-controlled linear regulator having noise-shaped component selection. The digitally-controlled linear regulator has a regulated-voltage sensor, a comparator module, a...
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7199565 |
Low-dropout voltage regulator with a voltage slew rate efficient transient response boost circuit
A low-dropout (LDO) voltage regulator for generating an output voltage is disclosed. The voltage regulator includes a startup circuit, a curvature corrected bandgap circuit, an error amplifier, a...
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7196502 |
Switching regulator having soft start circuit
A switching regulator has a soft start circuit having a current source, a capacitor, and a MOS transistor connected between the current source and the capacitor for undergoing controlled operations...
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7196501 |
Linear regulator
A linear regulator having an input node receiving an unregulated voltage, an output node providing a regulated voltage, a voltage regulator, a bias circuit, and a current control device. The...
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7190150 |
DC—DC converter for power level tracking power amplifiers
A DC-to-DC converter as described herein is suitable for use as a variable voltage supply for an RF power amplifier. The DC-to-DC converter includes a buck converter for providing relatively low...
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7180761 |
Constant voltage control apparatus capable of reducing feedback lines
Provided is a constant voltage control apparatus capable of reducing feedback lines. In the constant voltage control apparatus, a first amplifier amplifies an output voltage applied to a pair of...
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7173402 |
Low dropout voltage regulator
A low dropout voltage regulator (LDO) includes a regulating circuit, an amplifier, and a first compensating path. The regulating circuit is configured to receive an input signal at an input...
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7173401 |
Differential amplifier and low drop-out regulator with thereof
A differential amplifier having a positive input terminal, a negative input terminal, an output terminal, a bias terminal and a ground terminal is provided. The differential amplifier comprises a...
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7170352 |
Apparatus and method for dynamic time-dependent amplifier biasing
A circuit for driving a capacitive load is provided. The circuit includes a differential signal sensor and a differential amplifier. The differential amplifier is arranged to drive the capacitive...
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7161338 |
Linear voltage regulator with an adjustable shunt regulator-subcircuit
A linear voltage regulator is provided for providing an output voltage to a load. In a preferred embodiment, the linear voltage regulator comprises: an operational amplifier receiving a regulated...
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7161339 |
High voltage power management unit architecture in CMOS process
A voltage regulator circuit includes a single high voltage regulator, and a plurality of parallel low voltage regulators capable of receiving an intermediate voltage from the high-voltage...
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7154240 |
Load-driving device and method of driving load
A device for driving a load such as an electric motor for driving a fan mounted on an automobile includes a semiconductor power FET for supplying a load current to the load, a voltage detector for...
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7148666 |
Direct current voltage boosting/bucking device
A direct current voltage boosting/bucking device includes a direct current voltage boosting circuit and a low drop-out (LDO) linear voltage converting circuit. The direct current voltage boosting...
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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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7132811 |
Vehicle speed dependent compensator for electric steering systems
An electric power steering control system comprising: an electric motor disposed in a vehicle to apply torque to a steerable wheel; a torque sensor disposed in the vehicle for detecting a steering...
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RE39374 |
Constant voltage power supply with normal and standby modes
A first constant voltage circuit includes an operational amplifier having a reference voltage applied to a first input terminal thereof and a voltage obtained as a result of an output voltage being...
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7129661 |
Motor driver, motor driven by the motor driver, and apparatus employing the motor
A motor driver includes a first signal selector and a second signal selector. The first signal selector is used for selecting a signal to be supplied to an energizing unit of driving coils, and...
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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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7116086 |
System and method for driving LEDs
Embodiments of the invention provide for a system and method for driving LEDs with consistently good illumination and superior efficiency at lower cost and suitable for use with cheaper LEDs or...
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7102338 |
Multi-sense voltage regulator
A voltage regulator has an output path to couple to a load. A first sense point at a first sense location on the output path is to sense a first feedback signal for the voltage regulator. And, 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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7102394 |
Programming and control of an integrated circuit using an externally connected resistor network
A circuit in an integrated circuit having input terminals coupled to a resistor network for selecting one of multiple digital states includes a tri-state circuit, a multiplexer, a comparator and a...
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7095217 |
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...
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7091709 |
Constant voltage power supply circuit
A constant voltage power supply circuit including: a differential operation type amplifier, of which a first input terminal is supplied with a reference signal, and of which a second input terminal...
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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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7081740 |
Digital duty cycle regulator for DC/DC converters
A digitally-controlled, DC/DC converter includes at least one switched-mode power stage for the purpose of converting an input voltage (Vin) into an output voltage (Vout); the power stage including...
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7068018 |
Voltage regulator with phase compensation
The present invention provides a voltage regulator which has high-speed responsibility with a low consumption current, and which can stably operate with a low output capacity. The voltage regulator...
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7053592 |
Output level responsive switching on/off of a linear regulator
A circuit configuration provides an output voltage from an input voltage. The circuit configuration has a voltage regulator with an input terminal for receiving an input voltage, an output terminal...
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7042274 |
Regulated sleep transistor apparatus, method, and system
A transistor may operate as a sleep transistor or as a regulator.
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7038433 |
Active ORing controller for redundant power systems
ORing diodes are used for power redundancy. In order to reduce the power loss due to the diode forward drop voltage, active ORing power MOSFETs are proposed to replace the diodes. With the active...
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7038412 |
Device with an electromotor
An arrangement having an electric motor ( 10 ) has a microcontroller ( 12 ) for influencing at least one motor function and a nonvolatile storage element ( 14 ) for storing at least one variable as...
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7038432 |
Linear predictive controller
A linear predictive system for a DC—DC converter including a linear predictive controller, first and second adders and a multiplier. The DC—DC converter generates an output signal and includes...
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7030677 |
Frequency compensation scheme for low drop out voltage regulators using adaptive bias
A method and circuits to improve the stability of low dropout voltage regulators having an adaptive biased driving stage. Said improvement of stabilization is valid through the total range of...
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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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7015680 |
Current-limiting circuitry
A field effect transistor (FET) driver circuit includes an error amplifier for providing a FET control signal and a current limiting amplifier for preventing excessive current flow through the FET....
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