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| Number | Title | Issue Date |
| 8179190 | Pulse generator having an efficient fractional voltage converter and method of use Disclosed are systems and methods which provide voltage conversion in increments less than integer multiples of a power supply (e.g., battery) voltage. A representative embodiment provides power supply voltage multipliers in a binary ladder distribution to provide a... | 05/15/2012 |
| 8174306 | Electrostatic actuator apparatus According to one embodiment, an electrostatic actuator apparatus includes a first voltage generation circuit configured to generate a first voltage, a first switch connected between the first voltage generation circuit and a first node, a second voltage generation c... | 05/08/2012 |
| 8169254 | Semiconductor apparatus and method for controlling the same A semiconductor apparatus includes a plurality of pump control units respectively located in a plurality of chips, connected in series through a first TSV, and configured to sequentially delay a period signal, transmit delayed period signals and generate pump contro... | 05/01/2012 |
| 8164379 | Voltage generator capable of preventing latch-up and method thereof A voltage generator capable of preventing latch-up is disclosed. The voltage generator includes a positive charge pump unit, a negative charge pump unit, a second stage charge pump unit, and a control unit. The positive charge pump unit is utilized for generating a ... | 04/24/2012 |
| 8154333 | Charge pump circuits, systems, and operational methods thereof A charge pump circuit includes at least one stage between an input end and an output end. The at least one stage includes a first CMOS transistor coupled with a first capacitor and a second CMOS transistor coupled with a second capacitor. The at least one stage is c... | 04/10/2012 |
| 8143937 | Internal negative voltage generation device An internal negative voltage generation device includes a first internal negative voltage generation block configured to generate a first internal negative voltage which is lower than a ground voltage; a second internal negative voltage generation block configured t... | 03/27/2012 |
| 8143938 | Boost circuit and liquid crystal display device using boost circuit A charge pump circuit has boost capacitors and a charge switch supplying supply voltage to the boost capacitors, and a step-up ratio thereof is variable by switching a connection relationship of the boost capacitors. A control circuit unit controls switching of the ... | 03/27/2012 |
| 8143939 | Charge pump driving circuit and charge pump system A charge pump driving circuit for generating a driving pulse signal to drive a charge pump circuit is disclosed. The charge pump driving circuit includes a control signal generator and a driving signal generator. The control signal generator generates a first contro... | 03/27/2012 |
| 8134403 | Reduced current charge pump This document discusses, among other things, a charge pump having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current for a capacitor using a comparison of an output voltage to at least one ... | 03/13/2012 |
| 8130028 | CMOS charge pump with improved latch-up immunity A CMOS charge pump with improved latch-up immunity is provided. The CMOS charge pump includes a blocking transistor that disconnects first and second boost nodes from a bulk node in response to a blocking control signal, such that a bulk voltage can be maintained at... | 03/06/2012 |
| 8125263 | Charge pump A charge pump is disclosed for amplifying an input voltage received at an input end and outputting the amplified voltage at an output end as an output voltage. The charge pump includes a plurality of source/drain coupling transistors for serving as charging capacito... | 02/28/2012 |
| 8120411 | Charge pump with ramp rate control A charge pump circuit is provided that has a controllable ramp rate. The charge pump circuit may receive a control signal from a control circuit. The control signal may be asserted by the control circuit to turn on the charge pump circuit. When the charge pump circu... | 02/21/2012 |
| 8120412 | Voltage boosting system with slew rate control and method thereof A system includes a voltage controlled oscillator, a charge pump, and a current regulator circuit. The voltage controlled oscillator has a control input and a clock output that provides a clock signal at a clock frequency that is variable. The charge pump is coupled... | 02/21/2012 |
| 8120413 | Charge pump circuit A charge pump circuit includes a switch unit adapted to transmit charges from the input of the charge pump to the output of the charge pump; a transmission unit adapted to control turn-on or cut-off of an MOS transistor in the switch unit; and a charging unit in one... | 02/21/2012 |
| 8106702 | Dynamic enabling pump for power control A voltage generation system that can dynamically calibrate a time period for enabling the system includes: a voltage generation circuit, for providing an output voltage; an oscillator, coupled to the voltage generation circuit, for driving the voltage generation cir... | 01/31/2012 |
| 8106703 | Booster circuit Booster circuit comprising: first transistor that is connected to first node; capacitor that has one end connected to first node, and that is charged with voltage of first node when first transistor is activated; and control signal generating circuit that provides c... | 01/31/2012 |
| 8093941 | Systems and devices for dynamically scaled charge pumping Systems and devices for dynamically scaled charge pumping are presented. Example embodiments of the disclosed systems of dynamically scaled charge pumping enable regulation of the output voltage at a particular ratio and to dynamically control the ratio based on the... | 01/10/2012 |
| 8085086 | Non-volatile memory device and charge pump circuit for the same A charge pump apparatus comprises a plurality of charge pump stages, including a first stage, and one or more succeeding stages. The charge pump stages each include a respective output node. Each output node is connected to charge boosting circuitry and to precharge... | 12/27/2011 |
| 8076968 | Low-input-voltage charge pump In an embodiment, a charge pump of relatively simple design is provided which can generate sufficient drive voltage for a power switching device from a low-supply-voltage (e.g., 1V). In some embodiments, this charge pump performs better at lower input voltages when ... | 12/13/2011 |
| 8072258 | Booster circuit In a booster circuit which is operated with a two-phase clock and in which a plurality of (M≧4) lines of boosting cells constitute a unit, a boosting cell in the K-th line (1≦K≦M) is controlled, depending on the voltage of the input terminal of a boosting cell... | 12/06/2011 |
| 8072256 | Dynamic random access memory and boosted voltage producer therefor A dynamic random access memory (DRAM) is selectively operable in a sleep mode and another mode. The DRAM has data storage cells that are refreshed in the refresh mode. A boosted voltage is provided for the operation of the DRAM. A boosted voltage provider includes a... | 12/06/2011 |
| 8072257 | Charge pump-type voltage booster circuit and semiconductor integrated circuit device A booster circuit includes first and second transistors, a first capacitor, a first drive circuit, a second capacitor, a first controller, and a second controller. The first and second transistors are connected in series between a first voltage and a second voltage.... | 12/06/2011 |
| 8067977 | Voltage generating circuit and semiconductor device having the same An active charge pump circuit may include a charge pump circuit, a control circuit, and a charge transfer circuit. The charge pump circuit may generate a charge pumping voltage in response to an active enable signal. The control circuit may generate a charge transfe... | 11/29/2011 |
| 8067978 | Dynamic current supplying pump A pump system that can dynamically increase its current capability includes: a pump circuit, for producing an output voltage; an oscillator, for driving the pump circuit to pump at a particular frequency according to a pump enable signal; a limiter, coupled to both ... | 11/29/2011 |
| 8063693 | Electronic circuit for generating low voltage and high frequency phases in a charge pump A charge pump latch circuit is provided that includes at least one first and at least one second charge pump stage interconnected by an intermediate circuit node, and a stabilization stage connected to the intermediate circuit node and to control terminals of transi... | 11/22/2011 |
| 8054125 | Charge pump with low power, high voltage protection circuitry A charge pump circuitry for generating a charging voltage for programming a one time programmable (OTP) memory includes a charge pump sub-circuit for generating the charging voltage in a second voltage range when the charging voltage exceeds a threshold level. A pre... | 11/08/2011 |
| 8049552 | Internal voltage generator of semiconductor device An internal voltage generator of a semiconductor device includes a charge pumping unit for performing a charge pumping operation on the basis of the voltage level of a reference voltage to generate a charge pumped voltage having a voltage level higher than the exter... | 11/01/2011 |
| 8049553 | High-voltage CMOS charge pump Provided is a high-voltage complementary metal-oxide semiconductor (CMOS) charge pump. The high-voltage CMOS charge pump includes a first Dickson charge pump for doubling a supply voltage based on an input clock signal and a complementary input clock signal with rev... | 11/01/2011 |
| 8049551 | Charge pump for switched capacitor circuits with slew-rate control of in-rush current A ramp-up circuit for switched capacitor circuits with negative feedback to control the slew rate of in-rush current. Other embodiments are described and claimed. ... | 11/01/2011 |
| 8044707 | VDD/5 or VDD/6 charge-pump Systems and methods to achieve a charge pump for generating from single supply voltage energy efficient supply voltages having a value of ±⅙ Vdd, ±⅕ Vdd, ±¼ Vdd, ±⅓ Vdd, ±½ Vdd or ±1 Vdd that are symmetrical around ground voltage have been disclosed. T... | 10/25/2011 |
| 8044705 | Bottom plate regulation of charge pumps Techniques of operating a charge pump are described. The charge pump is connectable to receive a clock signal and a regulating voltage and provide an output voltage. The charge pump can have one or multiple stages, each of the stages will include a capacitor. During... | 10/25/2011 |
| 8044706 | Reduced capacitor charge-pump Systems and methods to achieve a charge pump for generating from single supply voltage energy efficient supply voltages that are symmetrical around ground voltage have been disclosed. The charge pump requires two flying capacitors only. The charge pump generates pos... | 10/25/2011 |
| 8040174 | Charge coupled pump-efficient charge pump regulator with MOS capacitor A charge pump with a MOS-type capacitor, where the MOS-type capacitor is operated in an inversion region in which capacitance varies as a function of the frequency of the applied signal. The charge pump is switched to transfer charge from an input node to the capaci... | 10/18/2011 |
| 8040175 | Supply regulated charge pump system An apparatus and a method for maintaining an output voltage of a charge pump circuit near a target voltage is disclosed. A regulated supply voltage is generated based on the output voltage of the charge pump. The regulated supply voltage is applied to a voltage inpu... | 10/18/2011 |
| 8035441 | High voltage generator and word line driving high voltage generator of memory device A high voltage generator includes: a detection unit for comparing a reference voltage with a high voltage and detecting a voltage level of the high voltage; an oscillator selection unit for generating a first control signal and a second control signal in response to... | 10/11/2011 |
| 8035440 | Multistage charge pumps with diode loss compensation Multistage charge pumps with diode loss compensation are disclosed. In one example, a pre-regulated charge pump to generate a voltage is described. The example pre-regulated charge pump includes a charge pump having a plurality of stages and one or more diodes. The ... | 10/11/2011 |
| 8030988 | Method for generating multiple incremental output voltages using a single charge pump chain A method and apparatus for generating multiple voltage level outputs from a single series of charge pump stages. The apparatus includes a plurality of voltage output circuits electrically connected in series. A selected number of the voltage output circuits include ... | 10/04/2011 |
| 8022749 | Circuit arrangement for voltage supply and method The circuit arrangement for the supply of voltage comprises a control arrangement (2), a charge pump (14), a comparator (25) and a ramp signal generator (30). A power supply voltage (Vdd) can be fed to the input of the charge pump (14 | 09/20/2011 |
| 8022750 | Boost circuit A boost circuit includes: first transistors connected in series between a voltage input node and a voltage output node to constitute a charge transfer circuit; and first capacitors, one ends of which are coupled to the respective connection nodes between the first t... | 09/20/2011 |
| 8022748 | Power source circuits for driving liquid crystal displays This invention is suitable for use in the field of integrated circuits. It provides a type of power source circuit. Said power source circuit includes: a charge pump circuit used to operate the charge pump to produce driving voltages; a first control circuit, used i... | 09/20/2011 |
