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:
Oct. 07, 1997
Filed:
Jun. 28, 1995
Yukio Fujisawa, Hyogo, JP;
Isao Takinoue, Hyogo, JP;
Mitsubishi Electric Semiconductor Software Corporation, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A switching regulator is composed of digital circuits only. A switching regulator (30) comprises a driver (2) for directly controlling the operation of a switching transistor (1), and an OR gate (6) for determining the logic issued by the driver (2). An output terminal (Q) of an RS flip-flop (5) is connected to one input end of the OR gate (6), the output of a timer (40c) is applied to a set terminal (S) of the RS flip-flop (5), and the output of a comparator (4) is applied to a reset terminal (R1) through an OR gate (7). At a non-reverse input end of the comparator (4), a reference voltage (VE) is applied by a D/A convertor (40b), while a feedback voltage (VFB) is applied to a reverse input end. Accordingly, chopping of the switching transistor (1) is done on the basis of a rectangular pulse.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile