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| Number | Title | Issue Date |
| 8188724 | Method and apparatus to reduce maximum power from a power supply with transition region regulation Techniques are disclosed to regulate the output power of a power supply. An example feedback circuit for use in a power supply regulator includes a voltage regulation circuit coupled to sense an output voltage of the power supply regulator. The voltage regulation ci... | 05/29/2012 |
| 8188723 | Switching converter and method to control a switching converter Preferred embodiments of the present invention are a switching converter, an integrated circuit package, and method for controlling a switching converter. An embodiment of the invention is a switching converter comprising a first compensation network having a first ... | 05/29/2012 |
| 8183848 | Switching regulator and constant frequency compensating circuit for fixing operating frequency A switching regulator for fixing a frequency which includes a power stage circuit, comprising an upper gate switch, a lower gate switch and an inductor; a reference voltage generator for generating a reference voltage; a comparator for outputting a comparing result ... | 05/22/2012 |
| 8179114 | Voltage converting device and voltage converting method A changing-speed calculator monitors a current value of an output current flowing through a load circuit to calculate a change speed of the current value. A correction-amount obtaining unit reads from a correction-amount table a correction amount of a duty ratio cor... | 05/15/2012 |
| 8169207 | Power supply device including a clamping portion to limit and error voltage and electronic appliance provided therewith A power supply device has an error amplifier producing an error voltage by amplifying a difference between a feedback voltage according to an output voltage and a predetermined reference voltage, an output portion producing a desired output voltage from an input vol... | 05/01/2012 |
| 8169208 | Output current detection of a voltage regulator For output current detection of a voltage regulator, the currents in a high-side transistor and a low-side transistor of the voltage regulator are sensed and summarized to a summed current to flow through a setting resistor. The voltage variation on the setting resi... | 05/01/2012 |
| 8159204 | Regulating current output from a buck converter without external current sensing A step-down (buck) switching regulator regulates output current without sensing a current external to a converter integrated circuit. The regulator generates a set current that is indicative of a predetermined current level to which the output current is regulated. ... | 04/17/2012 |
| 8159203 | DC-DC converter with switchable estimators A DC-DC converter is provided with a first estimator unit (RAE, RLPF, RHPF) for performing an accurate control signal estimation and a second estimator unit (FEU, ΔVEU) for performing a fast control signal estimation. In addition, a switching unit (SU) is provided ... | 04/17/2012 |
| 8154266 | Bi-directional DC power circuit Bi-directional direct current (DC) power circuit having: a signal processing module for processing feedbacks of output voltage and voltage drop, and outputting pulse control and directional control signals; a pulse width modulation (PWM) module for outputting pulse ... | 04/10/2012 |
| 8154315 | Self-referencing voltage regulator A voltage regulator includes an input terminal for receiving a power input having a first voltage level, and an output terminal for generating a power output. A reference signal having a second voltage level is derived from the first voltage level adjusted with a pr... | 04/10/2012 |
| 8154267 | Current mode control type switching regulator A switching regulator for converting input voltage to output voltage includes a switch; an inductor energized by input voltage by the switch; a rectifier for discharging the inductor; and a slope voltage generator for generating slope voltage inclined responsive to ... | 04/10/2012 |
| 8138737 | Duty cycle controller for power factor correction circuit A power factor correction circuit includes a first rectifier to rectify an AC voltage, a series circuit connected to an output of the first rectifier and including a step-up reactor and a switching element, a rectifying-smoothing circuit connected to both ends of th... | 03/20/2012 |
| 8138736 | Power system having a local sense control dominant over a remote sense control to avoid effects of interconnection failure modes A power system is configured to provide a regulated voltage to an electrical load connected to a power source through at least one power line. The power system includes a first voltage control loop based on a remote sense signal indicative of voltage level at the lo... | 03/20/2012 |
| 8138738 | Method for regulating supply voltage According to the method for regulating the supply voltage of an electronic circuit a regulating element with variable resistivity and the outer supply voltage being applied to an input terminal of said regulating element is controlled by an amplified difference betw... | 03/20/2012 |
| 8129972 | Single integrator sensorless current mode control for a switching power converter A single integrator sensorless current mode control scheme for a switching power converter requires an amplifier circuit which produces an first current that varies with the difference Verror between a reference voltage and a voltage that varies proportio... | 03/06/2012 |
| 8129971 | Multi-cell voltage regulator In some embodiments, the number of active cells in a multi-cell voltage regulator is controlled so that the current-per-active-cell approaches a predefined target or to be within an acceptable range so that the active cells operate with suitable efficiency. ... | 03/06/2012 |
| 8129973 | Controlling a voltage regulator A wireless system includes a radio and a voltage regulator, which provides a supply voltage to the radio. The voltage regulator includes a storage element, at least one switch that is coupled to the storage element and a controller. The controller operates the volta... | 03/06/2012 |
| 8120346 | Methods and apparatus for current sensing Methods and apparatus for current sensing according to various aspects of the present invention sense the current in a circuit, such as an inductor circuit. The current sensing systems may comprise an RC element connected such that the RC time constant matches the L... | 02/21/2012 |
| 8120347 | Sample and hold circuit and method for maintaining unity power factor An AC electrical system has a source voltage and current interconnected through an energy storage device with a load. A unity power factor control circuit maintains unity power factor incorporating the steps of producing a sample and hold voltage related to the inpu... | 02/21/2012 |
| 8115466 | Converter and driving method thereof A converter is disclosed for using at least one switch to convert an input signal to a square wave signal, and using the square wave signal to generate an output voltage. The converter converts the square wave signal by a switching operation of a switch and generate... | 02/14/2012 |
| 8115468 | Controller and driver communication for switching regulators Pulse width modulation (PWM) controllers and output stage driver circuits and related methods of communicating switching regulator mode information. The controller includes circuitry that recognizes intervals when the load driven by the regulator is in a low power m... | 02/14/2012 |
| 8115467 | DC-DC converter A DC-DC converter has an error amplifier that amplifies a potential difference between a first voltage based on an output voltage at the output terminal and a reference voltage, and outputs a resultant error amplified signal; a differential detecting circuit that se... | 02/14/2012 |
| 8106643 | Power supply apparatus A power supply apparatus is provided. The power supply apparatus includes two power suppliers coupled in parallel so as to simultaneously supply the electric power required by an electronic product in operation. The power supply apparatus provided by the invention m... | 01/31/2012 |
| 8102165 | Means of eliminating electrolytic capacitor as the energy storage component in the single phase AD/DC two-stage converter A power factor correction (PFC) circuit includes an inductor, a diode, a storage capacitor, a switch and a control unit. The input power has a voltage fluctuation V1. The storage component absorbs a first voltage fluctuation and a switch regulation circui... | 01/24/2012 |
| 8093879 | Semiconductor circuit A semiconductor circuit (10a) comprises a first terminal section (17) to be connected to a connection point of two external resistors; a second terminal section (18) to be connected to an external circuit; a voltage circuit section having... | 01/10/2012 |
| 8093878 | Switching power supply device A switching power supply device for a ripple control system that can obtain the ripple component with the necessary amplitude without using discrete elements. On capacitor Ci of CR integrator 11, a voltage is generated corresponding to the integration value o... | 01/10/2012 |
| 8089258 | Power supply apparatus A power supply apparatus is provided. The power supply apparatus includes two power suppliers coupled in parallel so as to simultaneously supply the electric power required by an electronic product in operation. The power supply apparatus provided by the invention m... | 01/03/2012 |
| 8089257 | Signal comparison circuit and power conversion device The voltage deviation is converted into the time quantity with the first integration circuit for the voltage detection and the second integration circuit for the voltage detection. The current setting value and the current measurements are converted into the time qu... | 01/03/2012 |
| 8085026 | Current sense cascode amplifier A current sense amplifier sensing current through a main switch of a converter. The amplifier includes first and second switch devices, an amplifier control circuit, a bias circuit, a current generator circuit, and a sense circuit. The main switch is coupled to an i... | 12/27/2011 |
| 8080986 | Driving control device and method for power converting system A driving control device and method for power converting system includes power converting circuit and driving control device. The driving control device has an analog/digital convertor, a measuring device, and a control module. The driving control method is the anal... | 12/20/2011 |
| 8076919 | Switch-mode power supply Disclosed is a Power Factor Correction Controller, which comprises a boost converter, a current sensing unit, an arithmetic unit, and a switch driving unit. The current sensing unit can sense or derive the current that pass through the energy delivery device, which ... | 12/13/2011 |
| 8058860 | Single pin multi-VID bit interface circuit for dynamic voltage change of a DC/DC converter A controller for a DC/DC converter is provided. The controller comprises an error circuit, control logic, a high side driver, a low side driver, and an interface circuit. The error circuit is coupled to a feedback terminal so as to receives a feedback signal and is ... | 11/15/2011 |
| 8044650 | Methods and apparatus for current sensing in mutually coupled inductors Methods and apparatus for current sensing in mutually coupled inductors according to various aspects of the present invention may operate in conjunction with a control system adapted to control current through the inductors and multiple current sensors connected to ... | 10/25/2011 |
| 8044649 | Dual mode regulation loop for switch mode power converter The invention relates to a DC-DC converter, which includes a power stage driven by a pulse width modulator, a first error amplifier with a first input coupled to a first reference voltage source and a second input coupled to a current sink through which a current is... | 10/25/2011 |
| 8040121 | Switching regulator A switching regulator is configured to generate an output voltage by stepping down an input voltage by switching control of a switching element. The switching regulator includes a first comparator configured to compare a feedback voltage of the output voltage and a ... | 10/18/2011 |
| 8040120 | Switching DC-DC converter and oscillator A switching DC-DC converter includes: an output voltage detecting unit configured to detect a DC output voltage; an error amplifying unit configured to compare the detected output voltage and a reference voltage and configured to supply an amplified error signal bet... | 10/18/2011 |
| 8035367 | Electronic device, detection circuit and voltage control method A voltage control method includes producing an error signal based on a difference between a reference signal and an adaptor voltage and an adaptor current corresponding to the adaptor voltage, regulating, based on the error signal, the adaptor voltage, comparing a r... | 10/11/2011 |
| 8026708 | Voltage regulator A voltage regulator stably operates even when an operating current of a differential amplifier circuit is increased according to an output current. In the voltage regulator, a current mirror circuit for detecting the output current and increasing the operating curre... | 09/27/2011 |
| 8022683 | Powering a power supply integrated circuit with sense current A power control system and method senses input and/or output voltages of a power supply using sense currents in order for an integrated circuit (IC) switch state controller to generate a control signal to control a switch of the power control system. By sensing sens... | 09/20/2011 |
| 8013585 | DC-DC converter and DC-DC power conversion method employing overcurrent protection An overcurrent detection circuit (50 in FIG. 1) in a DC-DC converter is connected to a switching control circuit (1), and detects an inductor current flowing through an inductor (L) during the ON control of a switching element (Mn), so as to dec... | 09/06/2011 |
