The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2002
Filed:
Jan. 30, 2001
Fujitsu Limited, Kawasaki, JP;
Abstract
A method for controlling an internal supply voltage generating circuit reduces power consumption in an active mode. The internal supply voltage generating circuit includes a first voltage-drop regulator, which supplies a relatively large driving power to an internal circuit, and a second voltage-drop regulator, which supplies a relatively small driving power to the internal circuit. First, the second voltage-drop regulator is activated and the first voltage-drop regulator is inactivated in one of a stand-by mode and a power-down mode. Then, at least the first voltage-drop regulator is activated in an active mode, and the first voltage-drop regulator is inactivated in an active pause of the active mode. The first voltage-drop regulator is activated when the active pause is cancelled.