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:
Apr. 28, 1998
Filed:
Sep. 26, 1996
Yoichi Tokai, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A chopper-type switching power-supply circuit having a DC high-potential input terminal, a DC low-potential input terminal, a DC high-potential output terminal, and a DC low-potential output terminal. The power-supply circuit has one terminal of an inductor connected to the DC high-potential input terminal and a capacitor connected to other terminal of the inductor. The output circuit contains the DC high-potential output terminal and the DC low-potential output terminal. A first input terminal is coupled to the other end of the capacitor and a second input terminal coupled to the DC low-potential input terminal. An N-channel MOSFET has a drain electrode connected to the other terminal of the inductor and a source electrode connected to the high-potential output terminal. A control circuit supplies a pulse-width control signal to the gate electrode of the N-channel MOSFET in accordance with the potential at the output terminals of the output circuits, thereby to perform negative feedback chopper control on the N-channel MOSFET.