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:
Jun. 09, 2015
Filed:
Apr. 11, 2013
Applicant:
Fujitsu Ten Limited, Kobe-shi, Hyogo, JP;
Inventor:
Yuichiro Shimizu, Kobe, JP;
Assignee:
FUJITSU TEN LIMITED, Kobe, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); H02M 3/156 (2006.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01); H02J 7/345 (2013.01); H02M 3/156 (2013.01);
Abstract
There is provided a power supply circuit. A switching regulator is configured to drop a battery voltage to a first specific voltage. A series regulator includes a switching element and a capacitor connected at an output stage of the switching element. The series regulator is configured to drop the first specific voltage to a second specific voltage and output the second specific voltage. A control circuit is configured to adjust an amount of electric charge to be accumulated in the capacitor according to a voltage value of the first specific voltage.