Low-power charge pump circuit and low-power booster method

Electric power conversion systems – Current conversion – With voltage multiplication means

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H02K 900

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054368219

ABSTRACT:
A charge pump circuit has a booster clock driver for outputting a clock signal changing between a power supply voltage and a ground voltage in response to a clock signal; a clock voltage control circuit connected to the booster clock driver for modifying a voltage level of the clock signal; a booster circuit connected to the clock voltage control circuit, provided with a capacitor to which the modified boosted clock signal is supplied and a boosted-voltage holding capacitor for holding a boosted voltage, for outputting the boosted output voltage; and a limiter connected to the booster circuit for limiting the output voltage. The clock voltage control circuit sets a high level of the clock signal at a voltage lower than the power supply voltage and a low level of the clock signal at a voltage higher than the ground voltage.

REFERENCES:
patent: 4106086 (1978-08-01), Holbrook et al.
patent: 4704706 (1987-11-01), Nakano et al.
patent: 5008799 (1991-04-01), Montaluo
patent: 5193198 (1993-03-01), Yokouchi
Yuji Yatsuda et al., "A Byte Erasable 5V-Only 64Kbit EEPROM", ElectroCommunication . . . , 12 vol. J66-C No. 12, Dec. 1983, pp. 927-934.

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