Voltage generating circuit

Details Voltage generating circuit Voltage generating circuit

2011-06-28

2011-06-28

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

Reexamination Certificate

active

07969230

ABSTRACT:
A charge pump provides high boosting efficiency with low power loss even with a heavy load. Plural charge transfer switches are connected in series forming two lines of charge transfer circuits operated by out-of-phase clock signals. Capacitors are connected to each of nodes in the charge transfer circuits. The charge transfer circuits include a first control unit, a second control unit, and a voltage comparison output unit. The second control unit includes a switch unit configured to selectively feed a signal from a previous-stage node or a later-stage node to the gate of a charge transfer switch in the second control unit, depending on the phase of the clock signal.

REFERENCES:
patent: 6501325 (2002-12-01), Meng
patent: 7259612 (2007-08-01), Saether
patent: 2002/0130703 (2002-09-01), Tsai
patent: 2003-88102 (2003-03-01), None
patent: 2004-23990 (2004-01-01), None
patent: 2005-339658 (2005-12-01), None
patent: 2008-125349 (2008-05-01), None
Ker, Ming-Dou, et al., “Design of Charge Pump Circuit With Consideration of Gate-Oxide Reliability in Low-Voltage CMOS Processes”,IEEE Journal of Solid-State Circuits, vol. 41, No. 5, pp. 1100-1107, May 2006.

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