Charge pump for generation of multiple output-voltage levels

Details Charge pump for generation of multiple output-voltage levels Charge pump for generation of multiple output-voltage levels

2006-12-11

2009-08-25

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

C363S059000

Reexamination Certificate

active

07579902

ABSTRACT:
A charge pump circuit for generating a plurality of voltages in excess of a supply voltage includes a first group of cascaded charge-pump stages, the input of a first charge pump stage in the first group being driven from the supply voltage. A first output stage has an input driven from the output of a last charge pump stage of the first group and an output coupled to a first voltage node. A second group of cascaded charge-pump stages is provided, the input of the first charge pump stage of the second group being driven from the output of the last charge pump stage of the first group. A second output stage has an input driven from the output of the last charge pump stage in the second group and an output coupled to a second voltage node.

REFERENCES:
patent: 5732039 (1998-03-01), Javanifard et al.
patent: 6151229 (2000-11-01), Taub et al.
patent: 6794927 (2004-09-01), Bedarida et al.
patent: 2002/0190781 (2002-12-01), Daak
patent: 2006/0083033 (2006-04-01), Myung et al.
patent: WO-2008/073862 (2008-06-01), None
patent: WO-2008/073862 (2008-06-01), None
“Application Serial No. PCT/US2007/086912, International Search Report mailed Sep. 30, 2008”, 12 pages.

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