Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-07-26
2010-10-05
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S157000, C363S059000, C363S060000
Reexamination Certificate
active
07808301
ABSTRACT:
A multiple-stage charge pump circuit includes first and second pump capacitors, a charge recycle circuit, and first and second transfer circuits. The charge recycle circuit includes first and second driving circuits and a switch circuit turning off to make a node floating and to couple first terminals of the first and second pump capacitors to the node in a first time period. The switch circuit and first and second driving circuits provide a specific voltage to the node and control voltages at the first terminals of the first and second pump capacitors in second and third time periods, respectively. The first and second transfer circuits provide a high voltage to a second terminal of the first pump capacitor in the second time period, and provide the voltage of the second terminal of the first pump capacitor to a second terminal of the second pump capacitor in the third time period.
REFERENCES:
patent: 5818289 (1998-10-01), Chevallier et al.
patent: 7365591 (2008-04-01), Tobita
patent: 2006/0061410 (2006-03-01), Chiu et al.
patent: 2006/0132220 (2006-06-01), Lee
Chen Chung-Kuang
Hung Chun-Hsiung
Shih Yi-Te
Bacon & Thomas PLLC
Donovan Lincoln
Goyal Shikha
Macronix International Co. Ltd.
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