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7315195 |
High voltage generation circuit
A high voltage-generating circuit comprises a control circuit for generating a control signal for executing an operation command and generating a refresh signal depending upon a refresh operation,...
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7312649 |
Voltage booster power supply circuit
A voltage booster power supply circuit using a first voltage VDD 3 and a second voltage VDDM to boost the first voltage VDD 3 , which is higher than the second voltage, to provide a boosted...
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7312972 |
Actuator driving apparatus
An actuator driving circuit for driving an electromagnetic actuator, includes a boosting circuit which boosts a source voltage, and a boosted voltage controller which is connected to an output...
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7312650 |
Step-down voltage output circuit
A step-down voltage output circuit preventing: latch-up phenomenon in a load circuit for a period between a power-supply activation and complete start of a charge pump circuit; and rapid change of...
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7307466 |
Potential detector and semiconductor integrated circuit
An integrated semiconductor circuit has a potential detector for detecting a potential boosted by a high voltage generator. One terminal of a first capacitor is connected to a potential detection...
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7304531 |
Internal voltage generator
Provided is an internal voltage generator for preventing an occurrence of leakage current while a charge pumping is not performed. The internal voltage generator includes: a charge pumping unit for...
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7304529 |
Method of controlling a charge pump generator and a related charge pump generator
The method controls a charge pump generator having at least an output tank capacitor on which a regulated output voltage of the generator is produced, and a pump capacitor that is connected to a...
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7304530 |
Utilization of device types having different threshold voltages
A technique implements high impedance nodes using high threshold voltage devices that may generate less leakage current and may have a higher gate oxide breakdown voltage than standard devices in a...
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7304528 |
Charge pump with speed control
A charge pump circuit includes a test mode control unit for generating a plurality of control signals according to a test mode enable signal and an input signal and fixing one of the plurality of...
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7304871 |
Boost circuit capable of step-up ratio control
When a step-up ratio control circuit sets a step-up ratio of a charge pump circuit to 1.0 to enable a short mode, a path inside the charge pump circuit is short-circuited and a first transistor is...
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7301388 |
Charge pump with ensured pumping capability
An n-stage charge pump contains n primary capacitive elements (C C1 -C Cn or C D1 -C Dn ), n+1 charge-transfer cells (60 1 -60 n+1 , 110 1 -110 n+1 , 120 1 -120 n+1 , or 130 1 -130 n+1 )...
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7298198 |
Charge pump
A charge pump comprises a single voltage multiplier stage ( 1 ) which converts an input voltage (VDD) into an output voltage (Vo) under control of a clock signal (Q, Qn; CLKO). An oscillator ( 2 )...
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7298199 |
Substrate bias voltage generating circuit for use in a semiconductor memory device
A substrate voltage generating circuit for use in a semiconductor memory device is provided. The semiconductor memory device includes a charge pump for generating a substrate bias voltage in...
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7292089 |
Charge pump circuit with no output voltage loss
The present invention is for preventing a charge pump from an unnecessary output voltage loss generated by a threshold voltage of a metal-oxide silicon (MOS) transistor. An apparatus for amplifying...
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7288981 |
Voltage translator circuits using capacitive techniques
A voltage translator circuit and a method for operating the same. The voltage translator circuit includes (a) an input node, an output node, and a ground node; (b) a voltage divider circuit...
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7288984 |
Charge pump generator and relative control method
The electric charge transferred in a charge transfer phase from the pump capacitor to the tank capacitor is diminished by reducing the amplitude of the voltage swing on the transfer capacitor...
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7282986 |
Negative voltage generator circuit
The present invention is related to a negative voltage generating circuit for reliably providing the semiconductor integrated circuit (IC) with a negative voltage. An electric charge pumping device...
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7283003 |
Reset signal generators for a frequency-phase detector and methods of generating reset signals for the same
Reset signal generators for a frequency-phase detector include a first signal source circuit is coupled to a pump-up signal of the frequency-phase detector. The first signal source circuit includes...
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7282956 |
High voltage switching circuit of nonvolatile memory device
A high-voltage switching circuit comprises: a high-voltage switch configured to transfer a high voltage; a pumping circuit configured to boost signals of first, second, and third nodes by...
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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...
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7279957 |
Charge pump for generating arbitrary voltage levels
A charge pump for generating an arbitrary voltage level includes “M” pieces of pump units PU i and “M+1” pieces of first switches S j . The pump unit PU i includes a first terminal N i,1 ...
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7279961 |
Charge pump for intermediate voltage
A charge pump generates a voltage higher than an intermediate voltage and a regulator circuit provides a first regulated voltage higher than the intermediate voltage. A second stage includes a...
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7279959 |
Charge pump system with reduced ripple and method therefor
A charge pump system has a charge pump for receiving a clock signal and provides an output signal of increased voltage magnitude in response to an enable signal. A plurality of comparators is...
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7279958 |
Synthesized resonation for an EL driver circuit
A driver circuit for an electroluminescent (EL) lamp that consumes less power and reduces electromagnetic interference (EMI). Electrical charge is stored during a discharge cycle of an AC signal...
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7276958 |
Charge pump with reduced noise spikes
A voltage supply circuit which suppresses generation of current spikes in the power source current in operation, reduce noise, simplify the circuit configuration, and decrease the cost. Clock...
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7276960 |
Voltage regulated charge pump with regulated charge current into the flying capacitor
A charge pump circuit with a regulated charge current where the amount of current flowing into the flying capacitor depends on the magnitude of the output voltage error, using an OTA to convert the...
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7276959 |
Pumping circuit of semiconductor device
A pumping circuit of a semiconductor device includes a power supply unit for supplying a power source voltage to a first node, a first transfer pump for transferring a first electric potential of...
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7274248 |
Booster circuit and semiconductor device having same
A booster circuit for boosting an externally supplied voltage includes a plurality of parallel-connected charge pump units. The charge pump units are activated successively in accordance with a...
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7271645 |
Smart charge-pump circuit for phase-locked loops
The smart charge-pump circuits basically include a high-performance charge-pump circuit as well as a smart lock-in circuit. After the smart charge-pump circuit sensors an initial condition and...
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7271642 |
Charge pump drive circuit for a light emitting diode
Through operated alternately between a charging phase and a discharging phase, a charge pump converts an input voltage source into a drive voltage for being supplied to a light emitting diode. A...
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7268611 |
Semiconductor device and memory card using same
A semiconductor device capable of achieving downsizing without reducing the power supply efficiency and capable of reducing switching noises and a memory card using the same are disclosed. The...
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7265606 |
Apparatus and method for a boot strap circuit for a boost voltage converter
A boost converter with a flying capacitor topology is provided. The flying capacitor is charged during a first half of a cycle. During a second half of the cycle, the output voltage of the boost...
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7259612 |
Efficient charge pump for a wide range of supply voltages
A voltage booster and regulator usable with Dickson-type charge pump device is specifically adapted to maintain efficiency with both high and low supply voltages. For high voltage supplies (e.g.,...
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7259611 |
Step-up / step-down circuit
A step-up/step-down circuit can be simplified as compared with conventional circuits by including a step-down unit for receiving a system clock pulse alternately providing a reference voltage (GND)...
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7259613 |
Method of forming a floating charge pump and structure therefor
In one embodiment, a capacitor of a charge pump circuit is referenced to a high side voltage or top voltage rail.
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7259974 |
Integrated floating power transfer device with logic level control and method
A switch control circuit ( 416, 402, 418, 422 ) and method are provided for transistor-implemented switches ( 405, 413, 408, 414 ) of an integrated floating power transfer device ( 400, 500 ). The...
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7256631 |
Charge pump with balanced and constant up and down currents
A charge pump generates a first sub up current and a second sub up current that vary complementarily with a change in a voltage at an output terminal. The charge pump also generates a first sub...
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7256640 |
Multi-stage charge pump voltage generator with protection of the devices of the charge pump
Protecting the devices of a charge pump includes the connection of a high-voltage transistor between the output node of the charge pump and the load being supplied, and in controlling this...
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7256641 |
Semiconductor device including a three or more stage semiconductor charge pump
A semiconductor device includes a three or more-stage semiconductor charge pump. The capacitance of a pumping capacitor that increases and decreases the potential of a final-stage node on the...
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7253676 |
Semiconductor device and driving method of semiconductor device
A semiconductor device that includes a clock generator which generates a clock signal; a booster which boosts a supply voltage by using the clock signal to output the boosted voltage; a potential...
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7253675 |
Bootstrapping circuit capable of sampling inputs beyond supply voltage
The bootstrapping circuit capable of sampling inputs beyond supply voltage includes: a bootstrapped switch MN 20 coupled between an input node and an output node; a first transistor MP 13 having...
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7250809 |
Boosted voltage generator
The present invention provides a boosted voltage generator of a semiconductor device where a boosted voltage efficiency and drivability at a target boosted voltage level can be evaluated accurately...
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7250808 |
Differential charge pump circuit
A differential charge pump circuit has two current paths and generates a differential current in accordance with currents inputted to the two current paths. The two current paths have a pair of...
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7250810 |
Multi-mode charge pump drive circuit with improved input noise at a moment of mode change
A multi-mode charge pump drive circuit has a multi-mode charge pump, a switch control circuit, a current regulation circuit, an error amplifier, a variable resistance unit, and a mode selection...
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7248096 |
Charge pump circuit with dynamic biasing of pass transistors
A two-phase charge pump is provided that is controlled by first and second clock signals in phase-opposition. The charge pump has a sequence of cascade-connected stages. Each stage includes a...
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7248123 |
Phase locked loop with floating capacitor boost circuit
Charge from a charge pump of a PLL is dumped to a loop filter of the PLL. The dumped charge is temporarily stored in a capacitor, between the charge pump and the loop filter. A voltage of the...
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7245245 |
Digitizer and related charge pump circuit
A digitizer and a related charge pump are provided. The charge pump includes an input coupled to the output of the comparator and receiving the output of the comparator as a control signal of...
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7245176 |
Apparatus for generating internal voltage in test mode and its method
An apparatus for receiving a first supply voltage in order to generate an internal voltage includes a control signal generating block for receiving a control enable signal and a clock signal and...
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7242255 |
Method and apparatus for minimizing phase error and jitter in a phase-locked loop
An apparatus that minimizes phase error and jitter in a phase-locked loop. The apparatus includes a phase/frequency detector, a charge pump, a loop filter, a voltage-controlled oscillator, and a...
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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.
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