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| Number | Title | Issue Date |
| 8089787 | Switched capacitor DC-DC voltage converter The disclosure describes techniques for converting an input voltage level to two or more output voltage levels using only two pump capacitors and three switching phases. The disclosure also describes techniques for selectively controlling a dc-dc converter to operat... | 01/03/2012 |
| 7990742 | Charge pump circuit and methods of operation thereof A charge pump circuit, and associated method and apparatuses, for providing a split-rail voltage supply, the circuit having a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of said state... | 08/02/2011 |
| 7764526 | Hysteretic mode controller for capacitor voltage divider A hysteretic mode controller for controlling a capacitor voltage divider which has a flying capacitor. In one embodiment, the hysteretic mode controller includes an amplifier, a gain circuit and a hysteretic comparator circuit. The amplifier has an input for couplin... | 07/27/2010 |
| 7679942 | Step-down DC-to-DC converter A step-down DC-to-DC converter includes an input terminal, an output terminal, a switching transistor, and a rectifying transistor. The switching circuit is connected between the input terminal and the output terminal and is configured to reduce an input voltage dow... | 03/16/2010 |
| 7663897 | Semiconductor circuit device and data processing system Occurrence of power supply noise arising in connection with a step-down action at the time of turning on power supply is to be restrained. A step-down unit is provided with a switched capacitor type step-down circuit and a series regulator type step-down circuit, an... | 02/16/2010 |
| 7518893 | Method for operation of a converter circuit, as well as an apparatus for carrying out the method A method for operation of a converter circuit is specified, wherein the converter circuit has a converter unit with a multiplicity of drivable power semiconductor switches and an LCL filter which is connected to each phase connection of the converter unit, in which ... | 04/14/2009 |
| 7511977 | Charge-pump type switching power supply apparatus A switching power supply apparatus generates a first output voltage with a reversed polarity of an input voltage and a second input voltage of double the input voltage with the reversed polarity, and then outputs them from the first output terminal and the second ou... | 03/31/2009 |
| 7369080 | Method and system for driver circuits of capacitive loads Driver circuits for switched-capacitor circuits are implemented using a variety of methods and devices. According to one such circuit, a switched-capacitor driver circuit is implemented for producing an output signal by driving a capacitive output load in response t... | 05/06/2008 |
| 7368977 | Dimming method and system thereof A dimming method for LED driving circuit is proposed. By temporary switching a pin that is originally used for the input/output of other electric signals to a high impedance node, the dimming control signal may be inputted to dim LEDs. The dimming method comprises t... | 05/06/2008 |
| 7330018 | Step-down controller circuit A step-down controller has an input having a first and a second input terminal for applying an input voltage, an output having a first and a second output terminal at which an output voltage can be provided, a series circuit including a switch and an inductance whic... | 02/12/2008 |
| 7310214 | Inductive output tube (IOT) control circuit A power supply for an RF transmitting tube while protecting the tube from a high voltage arc event. The supply includes a rectifier circuit configured to be connected to an AC voltage supply and having an output circuit that supplies a DC voltage to a load including... | 12/18/2007 |
| 7307858 | Power supply arrangement for battery powered device A battery powered headworn communication device and a method for conversion of a battery voltage in a battery powered headworn communication device, which includes providing a voltage reduction to a fixed part of the input voltage and providing a variable reduction ... | 12/11/2007 |
| 7294530 | Method for encapsulating multiple integrated circuits A device, such as an integrated circuit or an electronic circuit component is affixed to a substrate. A first encapsulation structure encases a first integrated circuit and has at least one groove formed therein. An adhesive partially fills the groove in the first e... | 11/13/2007 |
| 7292460 | Converter circuit for switching a large number of switching voltage levels A converter circuit is specified for switching a large number of switching voltage levels, which has n first switching groups for each phase, with the n-th first switching group being formed by a first power semiconductor switch and a second power semiconductor swit... | 11/06/2007 |
| 7282985 | Charge pump with at least two outputs “A charge pump used for producing at least a first output voltage and a second output voltage according to an input voltage is disclosed. The charge pump includes a pump unit, first to fourth switches, a first output capacitor and a second output capacitor. During... | 10/16/2007 |
| 7271573 | Low loss DC/DC converter including a multi-level controller that applies a monotonic sequence of voltage levels A direct current to direct current converter includes first and second switches to output voltages on first and second output terminals in response to appropriate turn-on voltages at first and second control terminals. The first control terminal may selectively comm... | 09/18/2007 |
| 7246330 | Apparatus and method for detecting body diode conduction in a semiconductor device An apparatus is for detecting body diode conduction in a semiconductor device that includes first regions fixed with a substrate having an upper surface to establish a source, gate and drain with drain-to-source current flow parallel with the surface. The first regi... | 07/17/2007 |
| 7239194 | Trench capacitor power supply system and method A plurality of trenched capacitors are grouped in phases. A control circuit switches each phase between charging and discharging states devised to supply one or more loads with controlled power. ... | 07/03/2007 |
| 7215098 | Electrical generating system having capacitative control of alternator regulation The invention provides an electrical generating system comprising an AC electrical generator (G) having an output, and a capacitor arrangement (Ca) provided at the output of the generator and arranged so as to offset a drop of voltage from no-load to full-load occur... | 05/08/2007 |
| 7190210 | Switched-capacitor power supply system and method A plurality of thin-film capacitors are grouped in phases. A control circuit switches each phase between charging and discharging states devised to supply one or more loads with controlled power. ... | 03/13/2007 |
| 7162795 | Power distribution system with a dedicated power structure and a high performance voltage regulator A system and method for distributing power to an integrated circuit. In one embodiment, a power laminate may be mounted to a printed circuit board (PCB). The integrated circuit for which power is to be distributed may be electrically coupled to the PCB. The power la... | 01/16/2007 |
| 7161342 | Low loss DC/DC converter A direct current to direct current converter includes first and second switches to output voltages on first and second output terminals in response to appropriate turn-on voltages at first and second control terminals. The first control terminal may selectively comm... | 01/09/2007 |
| 7161874 | Power generating type electronic timepiece The power generated by a power generating means (1) of a power-generating type electronic clock is measured by a first power generating sensing means (101) and a second power generating sensing means (102). The power generation level required wh... | 01/09/2007 |
| 7142438 | Extended output range switching power supply with constant power feature The Invention is a 360 watt bench has an exceptionally wide output range that allows it to replace up to four conventional units. The output voltage can be manually adjusted with coarse and fine controls from zero to 75 volts. At the low voltage end, 60 amps of outp... | 11/28/2006 |
| 7135847 | Serial connected low-loss synchronously switchable voltage chopper The invention relates to a buck converter comprising: a pair P—0 of switches SB, SH in series and connected to an input terminal B of the converter by the switch SB, K other additional pairs P—1, P—2, . . .... | 11/14/2006 |
| 7126647 | Power supply device of video display apparatus and method thereof A power supply device of a video display apparatus and a method thereof is capable of improving operation reliability of a video display apparatus, preventing erratic operation of the video display apparatus caused by higher harmonics and preventing erratic operatio... | 10/24/2006 |
| 7099167 | Step-down circuit, power supply circuit, and semiconductor integrated circuit A step-down circuit is provided that comprises a clock control circuit which provides a plurality of clock signals having a frequency determined based on a control signal; a charge pump circuit which reduces a first potential applied to a first terminal and then pro... | 08/29/2006 |
| 7092263 | DC-DC converter for converting an input voltage to a first output voltage A DC—DC converter is provided for converting an input voltage to a first output voltage. The input voltage is input to a first selecting switch, controlled by a first signal, and a second selecting switch. A first capacitor has one end, input by the first signal, ... | 08/15/2006 |
| 7088596 | Switching power supply with novel common mode filter arrangement The present invention is to provide a switching power supply device for preventing the change of characteristic of the line filter due to filler such as resin which covers the circuits. A switching power supply device is disclosed which comprise a rectifier 1... | 08/08/2006 |
| 7082041 | Power supply filtering A power supply is filtered while the amount of in-rush current required by the capacitive charging of the filter is limited. A resistor may be placed in parallel with a relay where the parallel combination is in series with the filtering capacitor. The relay is open... | 07/25/2006 |
| 7068020 | Step-down DC—DC converter An N-channel MOS transistor is used to configure a DC—DC converter having good characteristics without providing a particular voltage circuit which outputs a voltage higher than an input voltage. An N-channel MOS transistor 11 and a choke coil 12 are... | 06/27/2006 |
| 7019992 | Capacitively coupled power supply A power supply comprises a pair of first and second capacitors forming a capacitive voltage divider. A source of a periodic input supply voltage is coupled to the capacitive voltage divider for producing in the second capacitor, from a portion of the periodic input ... | 03/28/2006 |
| 7015561 | Active rectifier A switching circuit has an active switch, a controller, and at least two terminals. The at least two terminals include two current control terminals for connection at two locations in another circuit. The controller is configured to turn the active switch off to blo... | 03/21/2006 |
| 7009858 | Adjustable current consumption power supply apparatus A DC/DC converter and a series regulator are connected in parallel between an input terminal and an output terminal. At the time of a heavy load, the DC/DC converter is operated. Although the DC/DC converter has a large current consumption of its own, it has a high ... | 03/07/2006 |
| 7005905 | Stable timing clock circuit A circuit capable of providing stable timing clock includes: a step-down clamping circuit, an oscillating circuit, and a voltage potential-conversing circuit. The step-down clamping circuit that step down the input first voltage potential, and clamp to output second... | 02/28/2006 |
| 6998721 | Stacking and encapsulation of multiple interconnected integrated circuits In one embodiment, a device includes but is not limited to: a first integrated circuit affixed to a substrate; an electronic circuit component affixed to the substrate; a first encapsulation structure encasing the first integrated circuit; a second integrated circui... | 02/14/2006 |
| 6995807 | Micro-power stand-by mode A micro-power stand-by system is provided which minimizes power supplied to and the utilization of a stand-by power supply circuit and the resultant production of electro-magnetic interference (EMI) during normal electronic device operation. In one embodiment, the s... | 02/07/2006 |
| 6958924 | Multi-cell energy conversion device A device converting electric power between a voltage source and a current source, comprising several stages (8i) of switching cells (10i,k) comprising each two switches (12i,k, 14 | 10/25/2005 |
| 6933703 | Selectively activated electrochemical cell system A power generating system is described including a plurality of electrochemical cells. The cells are generally arranged in sections that are selectively activated individually or in combination to produce power from selected cell sections. A method of generating pow... | 08/23/2005 |
| 6922097 | Asymmetric-amplitude dual-polarity charge pump with four-phase selectable operation A symmetric dual-voltage charge pump and its control circuit generate bipolar output voltages. The charge pump converts a unipolar power source to a set of dual-voltage outputs of opposite polarity that are completely independent of each other. The charge pump inclu... | 07/26/2005 |
