Stabilized power supply circuit

Details Stabilized power supply circuit Stabilized power supply circuit

Filed on

2006-11-28

Date issued

2006-11-28

Examiner

Riley, Shawn (Department: 2838)

Patent Class

Miscellaneous active electrical nonlinear devices, circuits, and

SubClass

Specific identifiable device, circuit, or system

SubSubClass

With specific source of supply or bias voltage

Other Related Categories

C363S060000

Type

Reexamination Certificate

Status

active

Patent number

07142040

Description

ABSTRACT:
A stabilized power supply circuit includes a charge pump power supply circuit including four switching elements and a capacitor, and an error amplifier comparing the output voltage of the charge pump power supply circuit and a reference voltage and outputting an error signal on the basis of the difference therebetween. A current source is connected in series to the gate of a switching element formed of a MOSFET. The period during which electric charge is discharged from the gate is controlled in accordance with the error signal in order to maintain the output voltage constant.

REFERENCES:
patent: 5483434 (1996-01-01), Seesink
patent: 5680300 (1997-10-01), Szepesi et al.
patent: 6359797 (2002-03-01), Bayer et al.
patent: 6392904 (2002-05-01), Bayer et al.
patent: 6-351229 (1994-12-01), None
patent: 8-88550 (1996-04-01), None
patent: 10-304654 (1998-11-01), None
patent: 10-313570 (1998-11-01), None
patent: 2001-45740 (2001-02-01), None
patent: 2003-23770 (2003-01-01), None

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