Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-05-08
2007-05-08
Ton, My-Trang Nu (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S534000
Reexamination Certificate
active
10535102
ABSTRACT:
The present invention relates to a booster circuit of a non-volatile memory requiring a plus or minus high voltage equal to or higher than a power-supply voltage. The present invention can generate a high voltage of approximately 12 V even at a low power-supply voltage equal to or lower than 3 V and generate not only a plus high voltage but also a minus high voltage by the same circuit. Also, by combining a body-controlled type parallel charge pump, which is a booster circuit according to the present invention, with a serial-type charge pump, two types of high voltages can be efficiently generated and a reduction in chip areas can be achieved.
REFERENCES:
patent: 6603346 (2003-08-01), Sawada et al.
patent: 6661682 (2003-12-01), Kim et al.
patent: 6747897 (2004-06-01), Karaki
patent: 6819162 (2004-11-01), Pelliconi
patent: 11-308856 (1999-11-01), None
“A Dynamic Analysis of a Dicson Charge Pump”, IEEE, Journal of Solid-State Circuits, vol. 32, No. 8 Aug. 1997 (cited in the specification).
Kanai Takeo
Yamazoe Takanori
Antonelli, Terry Stout & Kraus, LLP.
Cox Cassandra
Nu Ton My-Trang
Renesas Technology Corp.
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