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Match Document Document Title
6727735 Charge pump circuit for reducing jitter  
A semiconductor device is disclosed which includes an input unit for charging and discharging an output terminal in response to an input signal; and a dummy input unit to reduce jitter in a voltage...
6724241 Variable charge pump circuit with dynamic load  
A variable charge pump circuit uses a plurality of selectable loads to minimize the voltage ripples of the pumped output by selecting the appropriate load for a preselected pump voltage. The charge...
6724240 Method and integrated circuit for boosting a voltage  
A method and an integrated circuit for boosting a voltage are disclosed. A two-stage charge pump is used and has switches and capacitors. Known charges pumps can be single-stage or multi-stage and...
6724239 Voltage boost circuit and low supply voltage sampling switch circuit using same  
A voltage boost circuit includes a boost capacitor; a charge circuit for charging in the charging mode the boost capacitor to a supply voltage, the charging circuit including a charging MOS switch...
6724242 Pump circuits and methods for integrated circuits including first and second oscillators and first and second pumps  
Boosted voltage generates and methods for an integrated circuit are configured to boost an initial boosted voltage to a first boosted voltage in response to detecting a drop in the initial voltage....
6720822 Negative charge pump architecture with self-generated boosted phases  
A negative charge pump circuit includes a cascade connection of a plurality of charge pump stages, each stage including at least a charge capacitance and a pass transistor driven by a corresponding...
6717458 Method and apparatus for a DC-DC charge pump voltage converter-regulator circuit  
An apparatus and method for a DC-DC charge pump voltage converter-regulator circuit includes a control circuit, a multiplier circuit, and a feedback circuit. The feedback circuit includes a load...
6717855 Method and apparatus for allowing continuous application of high voltage to a flash memory device power pin  
According to one aspect of the present invention, an apparatus is provided in which a first switching device is used to connect a first node to a second node and disconnect the first node from the...
6714065 Semiconductor device including power supply circuit conducting charge pumping operation  
The boosting circuit provided in a semiconductor device includes a ring oscillator generating a pump clock having constant periods, a pump capacitor for performing a boost operation, and a pump...
6710666 Charge pump structure for reducing capacitance in loop filter of a phase locked loop  
A charge pump for reducing capacitance in a loop filter of a phase locked loop. The loop filter contains a resistor and a capacitor. The charge pump includes first and second input current sources...
6707335 Control method of charge-pump circuit  
Malfunctioning is prevented with a charge-pump circuit which boosts a voltage in increments of less than power supply voltage. The charge-pump circuit has switches S 1 , S 2 and S 3 which connect...
6703891 Charge pump with improved reliability  
A semiconductor integrated circuit device having an internal voltage generating circuit which generates a voltage two or more times higher than an operating voltage while at the same time reducing...
6700435 Local supply generator for a digital CMOS integrated circuit having an analog signal processing circuitry  
Digital CMOS integrated circuit ( 120 ) comprising an analog signal processing circuitry with a series of two or more field-effect transistors (FETs). The FETs have a maximum allowed supply voltage...
6700436 Method and circuit for generating a high voltage  
A high voltage generating circuit is described that includes, a control signal generating circuit for generating a first control signal in a first time period, and for generating second, third and...
6700434 Substrate bias voltage generating circuit  
Oscillation outputs which are different for respective detector signals output from a first detector circuit and a second detector circuit, are obtained from a first ring oscillator and a second...
6696883 Negative bias charge pump  
The present invention concerns an apparatus generally comprising a plurality of pump stages each implemented on an independent well. The plurality of pump stages may each be configured to generate...
6693483 Charge pump configuration having closed-loop control  
A charge pump configuration for matching a charge pump to prevailing conditions is described. The charge pump configuration according to the invention has a charge pump having a plurality of...
6693480 Voltage booster with increased voltage boost using two pumping capacitors  
A voltage booster drives the gate of a bus-switch n-channel transistor to a theoretical maximum of triple the power-supply voltage Vcc. The gate node is first driven to Vcc. Then the back-side of a...
6693479 Boost structures for switched-capacitor systems  
Simple, inexpensive boost structures are realized with diode, switch and buffer circuits that operate in a charge mode and a boost mode to thereby generate a boost signal S boost . The boost...
6690227 Charge pump circuit for use in high voltage generating circuit  
A charge pump circuit includes a plurality of serially connected pump stages. Each pump stage includes current paths connected between a gate terminal of a charge transfer transistor and a drain...
6686793 Gate enhanced tri-channel positive charge pump  
A gate enhanced tri-channel positive charge pump. The positive charge pump of one embodiment comprises a switching device to transfer charge from its input terminal to its output terminal, the...
6686794 Differential charge pump  
According to some embodiments, a charge pump includes a first current source coupled to a first and a second switch, each of the first and the second switch to receive a respective component of a...
6683488 Charge pump circuit for semiconductor device  
A charge pump circuit with improved pump efficiency and usable in a semiconductor memory device, includes a charge node, a pump capacitor for pumping charges of the charge node, a charge transfer...
6677798 High speed voltage level shifter  
A high speed voltage level shifter for use in circuitry having core circuits operating at a very low supply voltage includes a boost circuit for producing a boosted signal in accordance with a...
6674317 Output stage of a charge pump circuit providing relatively stable output voltage without voltage degradation  
An output stage and method for a charge pump circuit which substantially reduces the degradation of the output voltage. A first NMOS transistor has its source connected to an input node and its...
6670844 Charge pump circuit  
A highly efficient charge pump circuit featuring easy circuit design and formation as well as high reliability includes transistors M 1 -M 4 individually having a diode connection configuration...
6667928 Semiconductor device in which a chip is supplied either a first voltage or a second voltage  
Disclosed are a semiconductor chip which is uniquely value-added, a semiconductor integrated circuit device which improves the productivity and yield of products and facilitates the production...
6667662 Oscillator circuit of internal power generator circuit and control method thereof  
An oscillator circuit which generates an oscillator signal that ensures the generation of a stable internal supply voltage. The oscillator circuit has a periodic circuit which includes a switch...
6664846 Cross coupled N-channel negative pump  
A charge pump circuit is described. The charge pump circuit includes: a first pumping stage, where the first pumping stage receives a first input voltage and a second input voltage and outputs a...
6661682 High voltage generating charge pump circuit  
The present invention is directed to a charge pump circuit. A multi-stage charge pump circuit with a particular structure for at least one of said stages is presented. The stage has two switches of...
6661683 Charge pump having very low voltage ripple  
A charge pump circuit is configured for continuous control of the output of the charge pump circuit through continuous use of at least one charge pump capacitor coupled with a servo amplifier....
6661278 High voltage charge pump circuit  
A switch element of a charge pump circuit includes (1) an NMOS transistor controlled by a first clock signal coupled between a first node and a first fixed voltage level, (2) a first PMOS well...
6657875 Highly efficient step-down/step-up and step-up/step-down charge pump  
A charge pumping system capable of a forward operation mode and a reverse operation mode is provided. In forward operation mode the charge pumping system can step-up an input voltage at a ratio of...
6657465 Rail-to-rail charge pump circuit  
A rail-to-rail charge pump circuit ( 60 ) that provides a current source and a current sink to a loop filter ( 62 ). The circuit ( 60 ) is responsive to two differential logic signals from a phase...
6657478 Voltage generation circuit and display unit comprising voltage generation circuit  
A voltage generation circuit including a capacitor, an n-channel MOS transistor, a p-channel MOS transistor and the like. The n-channel transistor has a source terminal connected to a node and a...
6654296 Devices, circuits and methods for dual voltage generation using single charge pump  
Devices, circuits and methods for dual voltage generation using a single charge pump. The dual voltages can be the same or different, as they are for two different components of a device. An...
6653889 Voltage generating circuits and methods including shared capacitors  
Integrated circuit voltage generating circuits include an integrated circuit substrate, a first voltage generating circuit in the integrated substrate that is configured to generate a first voltage...
6650172 Boost circuit with sequentially delayed activation of pump circuit stages  
A boost circuit reduces the consumed current during a startup condition of the boost circuit. The boost circuit comprises a plurality of charge pump circuit stages, each the charge pump circuit...
6646493 Voltage charge pump with circuit to prevent pass device latch-up  
A charge pump is disclosed with a circuit to prevent pass device latch-up. The charge pump includes at least one charge storage device and a pre-charge circuit to charge the at least one charge...
6646494 Semiconductor integrated circuit device having boosting circuit  
When a stage increasing signal, which is input into a sub boosting circuit, is at the L level, three boosting stages are used within the sub boosting circuit to boost a supply potential. On the...
6639864 Flash device operating from a power-supply-in-package (PSIP) or from a power supply on chip  
A system includes a processor and a flash memory block that may receive an operating voltage sufficient for reading a memory cell. A standby oscillator may generate a first signal to a...
6636103 Amplifier system with on-demand power supply boost  
An amplifier system with on-demand power supply boost includes an amplifier circuit for receiving an input signal and a charge pump connected to positive and negative power supplies and having...
6633494 Low voltage charge pump employing distributed charge boosting  
A charge pump system, including a charge pump and associated distributed clock generation circuitry, is provided for generating high voltages from a low initial voltage in applications such as...
6621326 P-channel negative pumps  
A charge pump circuit is described. The charge pump circuit includes: a first pumping stage including a first switch and a second switch coupled to the first switch; and at least a second pumping...
6614699 Booster circuit for raising voltage by sequentially transferring charges from input terminals of booster units to output terminals thereof in response to clock signals having different phases  
A booster circuit includes a plurality of booster units whose output terminals are respectively connected to the input terminals of the next-stage booster units, and an output circuit section. Each...
6614292 Boosting circuit of semiconductor memory device  
A boosting unit comprises a plurality of boosting circuits. Each boosting circuit includes an input driving circuit, a switching circuit, a capacitor circuit, and a precharge circuit. The input...
6611166 Charge pump load determination circuit  
Circuit and method for determining the presence of a load in a circuit including on a charge pump. The circuit monitors the state of a pump signal indicative of the operating status of the charge...
6608782 Booster circuit capable of achieving a stable pump operation for nonvolatile semiconductor memory device  
A p-MOS transistor 38 is connected to an intermediate node 5 . A level shifter 39 supplies an output signal hresetb to a gate of the p-MOS transistor 38 based on a signal Reset. Then, in an...
6605984 Charge pump ripple reduction  
Circuits reduce the ripple in charge pump output by staggering the times at which charge is drawn from the pump. In one embodiment, the outputs of a two-array high current pump are staggered by...
6605983 Voltage conversion circuit  
A voltage conversion circuit incorporate many of what were previously discrete components into a single IC, whereby the number of externally disposed discrete components is reduced as much as...
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