Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-11-27
2007-11-27
Wells, Kenneth B. (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
11021979
ABSTRACT:
An n-stage charge pump contains n primary capacitive elements (CC1-CCnor CD1-CDn), n+1 charge-transfer cells (601-60n+1, 1101-110n+1, 1201-120n+1, or 1301-130n+1) respectively sequentially designated as the first through (n+1)th cells, and sources of first and second clock signals (VCKPandVCK Por VCKP1and VCKP2) approximately inverse to each other. Each pump stage (62i, 112i, 122i, or 132i) includes one (CCior CDi) of the capacitive elements and a corresponding one (60i, 110i, 120i, or 130i) of the first through nth charge-transfer cells. Each cell contains a charge-transfer FET (PTior NTi). A pair of side FETs (PSiand PDior NSiand NDi) are provided in the first cell, in the (n+1)th cell, and normally in each remaining cell. The side FETs in the first cell or/and the (n+1) cell are connected in such a manner as to avoid undesired bipolar action that could cause degradation in the pump's voltage gain.
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Jager Ryan C.
Meetin Ronald J.
Mosel Vitelic Corporation
Wells Kenneth B.
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