Boosting circuit and boosting method

Details Boosting circuit and boosting method Boosting circuit and boosting method

2008-07-07

2009-12-15

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

Reexamination Certificate

active

07633332

ABSTRACT:
A boosting circuit includes a boosting capacitor to which an input voltage is applied; a smoothing capacitor to which a boosted voltage is applied; a discharging MOS transistor configured to connect said boosting capacitor and said smoothing capacitor in a discharging operation during a boosting operation period such that charge stored in said boosting capacitor is discharged to said smoothing capacitor; and a charging MOS transistor configured to apply the input voltage to said boosting capacitor in a charging operation during the boosting operation period to charge up said charging capacitor. A back gate of said charging MOS transistor and a back gate of said discharging MOS transistor are connected to a common node, and said common node is connected to different voltages in the charging operation and the discharging operation.

REFERENCES:
patent: 5371705 (1994-12-01), Nakayama et al.
patent: 5933047 (1999-08-01), Zhu et al.
patent: 7477048 (2009-01-01), Takeshi
patent: 2005-45934 (2005-02-01), None

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