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:
Aug. 22, 2006
Filed:
Aug. 06, 2004
Hidenori Kobayashi, Nagano, JP;
Hidenori Kobayashi, Nagano, JP;
Fuji Electric Holdings Co., Ltd., Tokyo, JP;
Abstract
A current detecting device and method that detects a variation in a current being supplied to a load in supplying variable DC power to the load via an inductor from a synchronous rectification DC-DC converter in which a high-side switch is connected to one electrode of a DC input voltage source and a low-side switch connected to the other electrode. The switches are turned on and off alternately during a prescribed switching period. A low-pass filter is connected to a signal line that leads from a connecting point of the inductor and the switches. An operation circuit detects an output current of the DC-DC converter by performing an operation on the difference between an output voltage of the low-pass filter and an output voltage of the DC-DC converter.