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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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7619396 |
Thermal dissipation improved power supply arrangement and control method thereof
Time-sharing technique is used for power conversion to improve the thermal dissipation thereof. In a power supply arrangement to provide a supply voltage to a load, a plurality of linear regulators...
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7583065 |
Hybrid filter for high slew rate output current application
An active linear regulator circuit in parallel with a filter capacitor of a switching voltage regulator injects current to a load only when the switching regulator and capacitor cannot supply...
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7564700 |
Power supply system and apparatus
The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input...
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7560912 |
Hybrid filter for high slew rate output current application
An active linear regulator circuit in parallel with a filter capacitor of a switching voltage regulator injects current to a load only when the switching regulator and capacitor cannot supply...
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7514911 |
Voltage regulator feedback protection method and apparatus
An integrated circuit comprising a feedback terminal to receive a feedback signal. A voltage regulator has a feedback input to receive the feedback signal from the feedback terminal. The voltage...
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7498778 |
ORing circuit
A method and a circuit comprising an electrically controlled transistor element ( 303 ) configured for conveying a current from an input terminal ( 300 ) to an output terminal ( 320 ), wherein the...
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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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7400121 |
Soft-start system for voltage regulator and method of implementing soft-start
A system and method to provide a slow start up voltage, such as that can slowly ramp up or down by cyclically coupling a pair of associated energy storage devices, such as capacitors, during a...
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7362079 |
Voltage regulator circuit
A voltage regulator circuit has a standby amplifier with an output coupled to a gate of an output transistor. An active amplifier has an output coupled to the gate of the output transistor and to a...
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7336058 |
Multistage low dropout voltage regulation
A low dropout (LDO) voltage regulator having more than one LDO modules, each LDO module having a frequency response adapted to a certain range of output frequency. The LDO voltage regulator can...
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7327125 |
Power supply circuit having voltage control loop and current control loop
A power supply circuit includes two pass transistors that conduct current from a voltage supply terminal to an output terminal. One of the pass transistors is smaller whereas the other is larger....
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7301313 |
Multiple voltage regulators for use with a single load
Multiple voltage regulators for use with a single load. The present invention allows power to be supplied to an electrical load using multiple voltage regulators based on the operating environment...
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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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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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7208923 |
Multiple-output power device, and mobile device using the same
A multiple-output power device has a plurality of regulators for outputting regulated voltages; a plurality of power terminals for supplying an input voltage to the respective regulators; and a...
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7199561 |
DC-DC converter and converter device
In a converter device, an N-type FET is connected in series between an input terminal and an output terminal and an N-type FET is connected between the side of the output terminal of the N-type FET...
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7170265 |
Voltage regulator circuit with two or more output ports
A dual output voltage regulator circuit is disclosed. The output voltage regulator has a first FET and a second FET. A current source responsive to the regulated output voltage provides a current...
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7106032 |
Linear voltage regulator with selectable light and heavy load paths
A light-load power transistor and a heavy-load power transistor are connected in parallel between an input voltage and an output voltage. The light-load power transistor has a smaller current...
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7031175 |
System and method of detecting phase body diode using a comparator in a synchronous rectified FET driver
A body diode comparator circuit for a synchronous rectified FET driver including a sample circuit and a comparator. The FET driver has a phase node coupled between a pair of upper and lower...
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6906501 |
Control method for parallel-connected power converters
A control method for the parallel-connected power converters includes a control circuit comprising a voltage feedback circuit and a current feed-forward circuit. The voltage feedback circuit,...
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6906579 |
Optimal inductor management
In a packaged integrated circuit, the package inductance limits the rate at which off-chip current may be varied in response to a change in on-chip current demand of the integrated circuit. The...
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6853322 |
Reducing jitter in mixed-signal integrated circuit devices
A data converter is implemented as an integrated circuit device ( 100 ). The converter comprises signal processing circuitry ( 120-170 ) which produces an output signal (OUT) in dependence upon a...
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6838861 |
Parallel coupled standby power supplies providing plural outputs
A power supply for a television apparatus comprises a source of energizing potential (5.2V) fed to first and second control transistors (Q 26403 , Q 26404 ). The first control transistor outputs a...
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6822426 |
Regulator with feedback voltage and current signal summing into controller
A current control circuit forces current sharing among paralleled power converters. Each power converter has an associated current control circuit, which includes a current amplifier and a coupling...
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6744242 |
Four-state switched decoupling capacitor system for active power stabilizer
In a packaged integrated circuit, the package inductance limits the rate at which off-chip current may be varied in response to a change in on-chip current demand of the integrated circuit. The...
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6727680 |
Extended range power supply system
An extended range power supply system includes a power source for providing operational power with a power supply circuit connecting with the power source for regulating the operational power. A...
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6677809 |
Integration of a voltage regulator
An integrated circuit with a D.C./D.C. internal voltage regulator, including at least two power stages of the regulator, having respective terminals of connection to a supply voltage connected to...
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6654264 |
System for providing a regulated voltage with high current capability and low quiescent current
A voltage regulator system includes a plurality of individual voltage regulators that are compounded to provide both high output current capability and low quiescent current at low load currents.
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6642698 |
Method and apparatus for distributing power to an integrated circuit
An apparatus for providing regulated power to a microelectronic device is disclosed. The apparatus includes an array of power regulators that are coupled together and which are configured to...
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6628094 |
Method and apparatus for canceling ripple current in a lamp
A method and apparatus for reducing ripple current in a projector lamp comprising an electrical network comprising input terminals A and C, and output terminals B and D, including a first inductive...
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6614706 |
Voltage regulating circuit, in particular for semiconductor memories
The voltage regulating circuit, in particular for semiconductor memories, has a reference-voltage generator for generating a reference voltage, an in-phase element for providing a regulated...
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6570367 |
Voltage generator with standby operating mode
A voltage generator for producing an internal supply voltage has a standby voltage generator and a voltage generator for normal operation that are controlled in common by a reference voltage. In...
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6541945 |
Apparatus and method for sharing two or more amplifiers to an array of pass circuits in a regulator circuit
An apparatus and method for a regulator circuit includes multiple amplifier circuits, multiple bias stages, and a shunt stage. Each bias stage includes a set of MOS transistors with respective...
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6515459 |
Apparatus and method for effecting controlled start up of a plurality of supply voltage signals
An apparatus for controlling start up of supply voltages received from a power supply responding to control by a feedback signal includes: (a) first error amplifiers receiving a supply voltage at a...
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6472853 |
Apparatus and method for limiting leakage to ground current while optimizing output of a power supply adaptable for use with a motion sensor switch
A method and apparatus for regulating a DC power supply, adaptable for use with a motion sensor switch, by limiting the leakage to ground current of the power supply to comply with U.L. Standards...
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6469480 |
Voltage regulator circuit having output terminal with limited overshoot and method of driving the voltage regulator circuit
A voltage regulator circuit comprises a reference voltage circuit for generating a reference voltage, an error amplifying circuit for receiving the reference voltage from the reference voltage...
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6465996 |
Constant voltage circuit with a substitute circuit in case of input voltage lowering
A constant voltage circuit robust to the input voltage lowering is disclosed. The invention is applied to a constant voltage circuit fed with an input voltage through first and second power...
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6384672 |
Dual internal voltage generating apparatus
To accomplish low power consumption of a semiconductor memory device, an internal voltage generating apparatus of the present invention applies an internal power voltage having the lower potential...
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6380721 |
Voltage regulator circuit
The performance of the main regulatory transistor of an on-chip voltage regulator circuit is enhanced when the main transistor is appropriately biased during start up. In an example embodiment, a...
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6288523 |
Precise rail tracking method for powering dual voltage integrated circuits
A rail tracking system and method for providing precise tracking of voltage levels to a dual supply voltage Integrated Circuit. A switch mode DC-DC voltage regulator is used to derive the lower of...
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6249110 |
Circuit configuration for generating a stabilized power supply voltage
In a circuit configuration for generating a stabilized power supply voltage, an in-phase regulator LR and a switched-mode regulator SR are connected in parallel to one another and are between...
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6181117 |
Power supply circuit of an electronic component in a test machine
Power supply circuit of an electronic component in a test machine and intended to provide the component with a supply current in a given range under a nominal polarization voltage. The power supply...
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6160490 |
Apparatus for improving the battery life of a selective call receiver
A selective call receiver (100) operating from a battery (102), includes a battery monitor (114), a radio receiver (108), a regulator (104), a capacitor (105) coupled to the regulator and the radio...
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6144194 |
Polyphase synchronous switching voltage regulators
The invention provides polyphase synchronous switching regulator circuits that include N power stages connected in parallel, with each stage synchronized to a timing control signal that is 360°/N...
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6140804 |
Converter for a DC power supply having a input resistance in series with a DC regulatory circuit
A converter is provided for stepping-down a DC power input to produce a DC power output of lower voltage. The converter includes a regulating unit (3), and, in series with it, an input resistor...
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6137273 |
Circuit for supplying a high precision current to an external element
The present invention concerns a circuit (30; 50) for supplying a first current (I3) to an external element (3), this current having to be supplied with high precision at a desired nominal value....
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6104176 |
Voltage regulator and method of voltage regulation
The voltage regulator includes a regulator circuit, connected between a high potential and a low potential, regulating an output voltage based on an input voltage. The regulator circuit includes a...
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6084384 |
Power supply circuit with auxiliary constant voltage circuit inhibit feature
A compact power supply circuit which can supply power to various apparatuses and circuits with a high degree of stability. A primary constant voltage circuit is connected to a second power supply...
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6049200 |
Voltage regulator capable of lowering voltage applied across phase compensating capacitor
There is provided a voltage regulator capable of lowering a voltage applied across a phase compensating capacitor even at the time of a high voltage output and of reducing an area of the phase...
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