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7615981 |
Boost converter with enhanced control capabilities of emulating an inductor current
A DC to DC converter for converting an input DC voltage to an output DC voltage. The DC to DC converter may include at least one switch, an inductor coupled to the at least one switch, and a...
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7615978 |
Current mode control with feed-forward for power devices
A power device controller includes a voltage mode control loop to generate an error voltage and to control a power device and a current mode control loop to generate a current control voltage and...
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7612544 |
Linearized controller for switching power converter
A linearized controller to operate a switching power converter which includes an inductor having its first terminal coupled to a first voltage (V 1 ) and its second terminal switched so that it...
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7609047 |
Dynamically configurable voltage regulator for integrated circuits
A voltage regulator architecture for an integrated circuit is described. An apparatus may comprise a power switch array having multiple pass transistors, a voltage regulator array having multiple...
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7609039 |
Controller and control method for DC-DC converter
A DC-DC converter having conversion efficiency that is not lowered by input voltage change. A mode control circuit of the DC-DC converter monitors the input voltage, output voltage generated from...
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7606053 |
DC-to-DC converter and electric motor drive system using the same
A DC-to-DC converter is provided and generally configured for implementation with an electric motor drive system. In at least one embodiment, the DC-to-DC converter includes first and second...
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7605575 |
Voltage-supply circuit and method for providing a circuit with a supply voltage
A current-supply circuit includes a regulation transistor. The regulation transistor is formed to regulate, based on a first supply voltage present on a first supply-voltage feed line, a second...
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7605574 |
Switching regulator circuits
A current-mode switching regulator including at least: an inductor; a main switch for controlling the current flow through the inductor; and a feedback control circuit for operating the main switch...
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7605573 |
Switching regulator providing slope compensation and voltage control method thereof
A CMC-type switching regulator is disclosed that includes: a switching element switching to control outputting of input voltage; a smoothing circuit outputting the smoothed output voltage of the...
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7605571 |
Switching regulator with lower transistor capable of two states of ON or low current
The present invention discloses a switching regulator, which comprises: a first and a second transistors electrically connected with each other; a pulse width modulation control circuit for turning...
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7602168 |
Voltage regulator for integrated circuits
A voltage regulator for a charge pump includes a capacitor divider and a reset circuit. The capacitor divider produces, based on an input voltage (VPP), a sample voltage at a sampling node. The...
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7602165 |
Phase control device for DC/DC converter
A phase control device for use with a voltage-boosting DC/DC converter includes a current sensor for detecting a current flowing through at least one of the primary and secondary windings of a...
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7602164 |
Adaptive DC to DC converter system
The present invention discloses an integrated voltage regulator comprising a switching regulation and an additional regulation mechanism. The additional regulation mechanism permits better control...
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7602163 |
Coupled inductor output regulation
An information handling system includes a power converter having a first switched inductor to supply current to a load. A second switched inductor is inductively coupled to the first switched...
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7602161 |
Voltage regulator with inherent voltage clamping
A voltage regulator may include a resistor-based voltage divider circuit generating a desired output voltage from a supply voltage, an output NMOS device whose source terminal may be configured as...
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7602155 |
Power supply providing ultrafast modulation of output voltage
A power supply for providing a modulated output voltage to a load is disclosed. According to various embodiments, the power supply comprises a plurality of parallel-connected switch-mode power...
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7598719 |
Switching regulator with improved power supply voltage variation response
Provided is a switching regulator having an improved power supply voltage variation response characteristic while maintaining the stability of an output voltage to oscillation. An output resistance...
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7598714 |
Amplifier employing interleaved signals for PWM ripple suppression
An amplifier having improved distortion characteristics is set forth. The amplifier includes an interleaved PWM amplifier that generates interleaved PWM pulses in response to a modified input...
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7595619 |
Feed-forward circuit for adjustable output voltage controller circuits
A feedback loop in a variable power supply has an adjustable response speed based on operating conditions of the power supply. The response speed can be increased upon encountering a transient to...
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7595618 |
DC voltage converter with a detector circuit configured to distinguish between operating modes
A DC voltage converter is provided that cyclically converts an input-side supply voltage into an output voltage, and includes an inductive storage element connected between a supply voltage...
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7595617 |
Switching power supply control
A switching power supply controller includes a comparator to compare a feedback signal to a first limit and a second limit, one of which includes a ramp. Limit generators may be used to generate...
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7592788 |
Control device of a switching converter with overcurrent protection circuit and related switching converter
A control device of a switching converter having an input terminal, an output terminal and a semi-bridge of a first and second transistor coupled between the input terminal and a reference voltage,...
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7592787 |
Adaptive firing order control for dynamic current balance of multiphase voltage regulators
A pulse width modulation (PWM) modulator for a multiphase power converter and related adaptive firing order (AFO) method includes a multiphase leading edge generator having pulse generating...
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7589508 |
Low-noise switching voltage regulator and methods therefor
Several techniques are provided to increase the efficiency and reduce the EMI of produced by a multiphase switching voltage regulator. According to one technique, a multiphase switching voltage...
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7589506 |
Signal-to-noise improvement for power loss minimizing dead time
Apparatus for minimizing power losses associated with dead time between ON times of two series connected switches of a power converter connected across a supply potential, the apparatus comprising...
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7586767 |
Limit-cycle oscillation (LCO) based switch-mode power supply (SMPS) response evaluation
A limit-cycle oscillation (LCO) based switch-mode power supply (SMPS) response evaluation provides an effective mechanism for determining the characteristic response of an SMPS during normal...
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7586297 |
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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7586296 |
Power supply apparatus
The power supply apparatus includes a stepdown switching power supply circuit having a switching element and a smoothing circuit, a filter circuit located in the upstream of the stepdown switching...
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7586294 |
Current resonance type DC/DC converter actualizing a stable zero-current switching
In a current resonance type DC/DC converter for converting an input voltage into an output voltage, a control circuit has an edge detection circuit for detecting edges of a driving control signal...
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7583555 |
Robust and Efficient dynamic voltage scaling for portable devices
A method and apparatus for voltage regulation uses, in one aspect, worst-case supply voltages specific to the process split of the integrated device at issue. In another aspect, a two-phase voltage...
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7579918 |
Clock generator with reduced electromagnetic interference for DC-DC converters
A clock generator includes a current source for generating a constant current; a current mirror coupled between a supply voltage and the current source for generating a mirror current equal to the...
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7579817 |
Constant-voltage circuit capable of reducing time required for starting, semiconductor apparatus including constant-voltage circuit, and control method of constant-voltage circuit
A constant-voltage circuit includes a switching regulator and a series regulator each configured to start operating according to a selection signal input from outside the integrated circuit for...
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7579816 |
Single feedback input for regulation at both positive and negative voltage levels
A voltage regulator provides a regulated output load voltage at either a positive level or an inverted level relative to an input supply voltage. A switching circuit and control circuit are formed...
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7576527 |
Low power DC-DC converter with improved load regulation
A voltage converter includes, among other things, an amplifier, a voltage combiner, and a hysteretic comparator. The amplifier has a first input terminal which receives a first voltage...
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7576521 |
Switching regulator
A switching regulator, has first and second switching regulator units, and first and second PLL circuit units that are provided in the first and second switching regulator units respectively, input...
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7573248 |
Step-up switching voltage regulator circuit
A power voltage of a battery (including a secondary battery) mounted on a portable device drops with use or the like of the portable device. Therefore, a step-up switching voltage regulator circuit...
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7573152 |
Power sequencing circuit
The present invention provides a self-contained power management device, such as a power management IC or an IC including power management functions, which allow sequenced start up of power...
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7570020 |
Apparatus and method for magnetic charger IC for batteries with recycling of the LC filter for re-use as a battery step-down converter
A voltage regulation and battery charging system is provided. The system may include a switching regulator selection control circuit, two switching regulator controller circuits, two power...
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7567069 |
Step-up power supply device
A step-up power supply device includes: a step-up converter; a startup circuit which controls the on/off operation of a switch element of the step-up converter when an output voltage of the device...
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7567067 |
Power supply, display device, and light source driving apparatus
A power supply is provided, which includes a DC-DC converter being supplied with an external DC input voltage and a first switching control signal and outputting a duty sensing signal of which a...
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7567065 |
Switching regulator and method for changing output voltages thereof
A switching regulator including two switching elements and a control switching part. The two switching elements perform a switching operation according to a control signal to control an output...
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7564232 |
Charging circuit and control method and integrated circuit utilizing the same
A charging circuit for a bridge tied load (BTL) including an amplifier and a load driven by the amplifier according to a voice signal and a reference voltage stored in a reference capacitor. The...
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7564231 |
Switching power supply source
A switching power supply source including an inductance with first and second terminals; an output node; an NMos transistor, the drain of which is connected to the first terminal; a PMos...
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7564226 |
Rapid supply voltage ramp using charged capacitor and switch
In one embodiment, an apparatus is provided for a system including an integrated circuit coupled to a node to receive a supply voltage and having bypass capacitors coupled in parallel with the...
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7564196 |
Power supply device, and LED device and electronic device using same
A power supply device includes a step-up circuit configured to supply a driving voltage to a load, a comparison circuit configured to compare an output voltage from the load with a reference...
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7560915 |
Power supply apparatus provided with regulation function and boosting of a regulated voltage
A voltage comparator of a power supply apparatus detects overshoot by comparing an output voltage with a threshold voltage. The power supply apparatus is provided with three switches. Upon...
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7560910 |
Voltage converter and semiconductor integrated circuit
There is a need for preventing a MOS transistor from being destroyed due to an inrush current from an input terminal when a boost operation starts from a boost disabling state. During the boost...
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7560909 |
Power converter using extrapolative conductance mode control
Power converters employing extrapolative conductance mode (ECM) control utilize periodic current sampling and employ an extrapolation method to determine charge pulse duration. In preferred...
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7560902 |
Duty cycle controller for high power factor battery charger
A duty cycle controller apparatus for producing a duty cycle signal for controlling switching of switches of a battery charger having an AC input for receiving power and an output for supplying...
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7560898 |
Apparatus and method for dual source, single inductor magnetic battery charger
A voltage regulation and battery charging system is provided. The system may include a switching regulator selection control circuit, two switching regulator controller circuits, two power...
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