Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2008-07-23
2010-10-26
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
07821326
ABSTRACT:
The present invention relates to a charge pump, which uses a chopper circuit or a clamp circuit coupled between a pump capacitor and an output capacitor for preventing a parasitic transistor produced by a switching mechanism from turning on. Thereby, the performance of the charge pump is improved effectively.
REFERENCES:
patent: 5589697 (1996-12-01), Smayling et al.
patent: 6501325 (2002-12-01), Meng
patent: 6535052 (2003-03-01), Myono
patent: 7030683 (2006-04-01), Pan et al.
patent: 7427891 (2008-09-01), Sakurai et al.
patent: 7466189 (2008-12-01), Sohara et al.
patent: 2009/0039947 (2009-02-01), Williams
Chen Han-Chao
Yeh Cheng-Chung
Chow Ming
Sinorica LLC
Sitronix Technology Corp.
Tra Quan
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