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7629711 |
Load independent voltage regulator
An integrated circuit package ( 202 ) includes a voltage regulator ( 208 ) and a power-out pin ( 236 ) for coupling to a load circuit ( 210 ) via a connection ( 234 ) external to the integrated...
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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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7405547 |
Stabilized DC power supply circuit having a current limiting circuit and a correction circuit
A stabilized DC power supply circuit of the present invention includes an output current limiting circuit for limiting an output current of an output transistor, and a correction circuit for...
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7362080 |
Power regulator having over-current protection circuit and method of providing over-current protection thereof
A power regulator includes a pass transistor, a feedback circuit, an error amplifier and a protection circuit. The pass transistor receives an unregulated first power supply voltage, and an output...
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7215103 |
Power conservation by reducing quiescent current in low power and standby modes
A method and circuit for automatically lowering a quiescent current at a predetermined threshold. A compact and low power current comparator is employed to detect the power consumption conditions,...
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7038431 |
Zero tracking for low drop output regulators
A low drop output regulator may be used for power management. The low drop out regulator may include an amplifier network having a transfer function may be used to provide a substantially constant...
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7019499 |
Low noise fast stable voltage regulator circuit
A low noise voltage regulator circuit with fast stable output voltage is disclosed. The low noise voltage regulator circuit contains a reference voltage generator, for generating a reference...
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6650097 |
Voltage regulator with reduced power loss
To provide a voltage regulator with high safety in which its characteristics do not deteriorate and the regulator is not destroyed even if it is used with a large loss, for example, it is...
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6583607 |
Linear regulator with a selectable output voltage
A control method and a linear regulator of the type including a power MOS transistor, controlled by a differential amplifier having a first input terminal receiving a reference voltage and a second...
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6181118 |
Control circuit for controlling a semi-conductor switch for selectively outputting an output voltage at two voltage levels
A control circuit (1) for controlling a FET (2) for outputting a 3.3 volt or a regulated 1.5 volt output to an AGP bus on a PC motherboard in response to a TYPEDET signal being applied to a control...
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6046577 |
Low-dropout voltage regulator incorporating a current efficient transient response boost circuit
An improved low-dropout ("LDO") voltage regulator incorporates a transient response boost circuit which is added to the slew-rate limited node at the control terminal of the LDO voltage regulator...
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6034515 |
Current limiting circuit
A current limiting circuit in which, when the input DC voltage is raised from zero volts to the reference voltage, an output DC flows through the connected load only when the value of the input DC...
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5986441 |
Circuit configuration for capturing the load current of a power semiconductor component with a load on the source side
The circuit configuration captures the load current of a field effect-controllable power semiconductor component. The drain and gate terminals of a further field effect-controllable semiconductor...
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5920472 |
High voltage converter circuit
A power supply apparatus for a drive unit in a high voltage converter circuit, the circuit has a plurality of power semiconductors connected in series. Each power semiconductor is connected to a...
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5550462 |
Regulated power supply circuit and an emitter follower output current limiting circuit
The present invention provides a regulated power supply circuit capable of stably limiting an output current even in a case where an output current detecting resistor having a low resistance is...
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5528127 |
Controlling power dissipation within a linear voltage regulator circuit
A method and apparatus for providing a regulated output voltage when supplied with an unregulated input voltage utilizes a detection circuit to selectively steer current between two current paths...
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5272399 |
Circuit limiting the load current of a power MOSFET
A circuit configuration for limiting current flowing through a power MOSFET includes a voltage divider being connected between drain and source terminals of the power MOSFET and having a node at...
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5243271 |
Voltage stabilized power supply with capacitor isolation during supply voltage variations
A power-supply arrangement comprises a reference circuit for generating a reference voltage (Vref). The reference circuit is coupled between a first (1) and a second (2) supply voltage terminal for...
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5180965 |
Direct-current power source circuit with back gate control circuit for power MOS-FET
A direct current power source circuit has a voltage control power MOS-FET and a back gate control circuit. The voltage control power MOS-FET is connected between an input terminal and an output...
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RE33941 |
Power driver having short circuit protection
A power driver including a switch (17) that connects between a power input terminal (12) and a power output terminal (13). A current sense unit (22) provides an over current sense signal if an over...
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5004970 |
Device and a process for detecting current flow in a MOS transistor
In a device for detecting the flow of a current lower than a given threshold current in a load (L) in series with a power MOS transistor (M1), the free terminal of the MOS transistor is connected...
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4950975 |
Preliminary stage of a voltage regulator with low loss of voltage, and voltage regulator with said preliminary stage
A preliminary stage of a voltage regulator with a low voltage loss to be connected with a further stage of the voltage regulator and comprising an input and output voltage terminals, a common...
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4887021 |
Precision noise spike elimination circuit for pulse width modulators and PWM inverters
Circuitry is provided to eliminate high frequency noise spikes in the output of a pulse width modulator and inverters employing pulse width modulators. This circuitry provides a precision noise...
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4800331 |
Linear current limiter with temperature shutdown
A high efficiency current limit circuit comprises a current sensor, a control unit responsive to the current sensor for providing a control signal to a solid-state series pass element which limits...
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4706159 |
Multiple power supply overcurrent protection circuit
A short circuit protection circuit and associated method is provided, for a device with a first and second power supply. The circuit comprises a pair of switches connected to the respective power...
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4684878 |
Transistor base current regulator
The collector-to-emitter voltage (V CE ) of a transistor switch and its base drive are designed to have maximum specified values when the transistor switch conducts the highest specified load...
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4669026 |
Power transistor thermal shutdown circuit
A thermal shutdown circuit for use with a high power transistor which incorporates a sense emitter. A differential amplifier is driven from the transistor base and the sense emitter and has an...
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4489141 |
Passive potentiostat
This invention provides a passive potentiostat which is adapted to function as a self-adjustable unipolar resistive load. The passive potentiostat is suitable for controlling the half-cell...
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4146903 |
System for limiting power dissipation in a power transistor to less than a destructive level
A system for limiting power dissipation in a power transistor to less than a destructive level is disclosed. The power transistor includes a base and a power emitter in the base. The system...
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4050083 |
Integrated thermally sensitive power switching semiconductor device, including a thermally self-protected version
A monolithic semiconductor device is disclosed comprising a power switching thyristor and a temperature sensitive thyristor integrated on a common substrate. In preferred form, the temperature...
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3796943 |
CURRENT LIMITING CIRCUIT
A current sense voltage is derived which is proportional to the current to be limited. The current sense voltage is applied in phase opposition to a difference voltage obtained by opposing the...
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3596170 |
CIRCUIT FOR REGULATING PEAK VALUES OF AN AC WAVE
A peak-to-peak regulator is coupled in series between an AC power source and the primary of an AC transformer. Another winding on the same transformer is employed to detect when peak values of the...
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3579089 |
STABILIZED POWER SUPPLY CIRCUITS
A stabilized power supply circuit is provided having a transistor series control circuit, a resistance voltage divider shunting the load, a control circuit with a control amplifier and a reference...
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3534249 |
CURRENT REGULATING NETWORK WITH OVERLOAD PROTECTION
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3480852 |
AMBIENT AND COMPONENT TEMPERATURE COMPENSATED VOLTAGE CURRENT REGULATOR
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3453519 |
POWER RESPONSIVE CURRENT REGULATOR
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3432743 |
CONSTANT CURRENT SINK CIRCUIT
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3405319 |
Series regulator with disabling network
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3305764 |
Current and voltage regulated power supply
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3305763 |
Voltage/current regulated power supplies
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3286154 |
Power supply current regulation utilizing a sensing circuit to regulate power to theload
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3214678 |
Transistor regulated supply employing inverse biasing networks for temperature stabilization
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3211989 |
Voltage regulator employing a nonlinear impedance and negative temperature coefficient impedance to prevent leakage current
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3201680 |
Regulated transistor power supply with automatic shutoff
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3196344 |
Voltage regulator including a nonlinear mixing network to limit the power dissipation of a continuously conducting series regulating transistor
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3182247 |
Power supply sensing means
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3161778 |
Protection of circuit elements
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3158801 |
Regulated power supply
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3114873 |
Transistor power supply
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3105188 |
All-transistor regulated power supply having a protection circuit
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