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:
Sep. 16, 2003
Filed:
Jun. 07, 2002
Atsushi Mitamura, Hanno, JP;
Hideyuki Ono, Hanno, JP;
Shindengen Electric Manufacturing Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a stable, highly efficient DC-DC converter that uses &Dgr;&Sgr; modulation capable of limiting excessive peak current flowing inside the converter by monitoring the current flowing inside the converter with an integrator located inside the &Dgr;&Sgr; modulator. A highly efficient &Dgr;&Sgr; modulation type of DC-DC converter can be provided capable of stable control without requiring a detection resistor by composing the &Dgr;&Sgr; modulator with an adder, integrator, quantizer and attenuator, providing an AND circuit that limits the on period of the output signal of a power switching element, and limiting the excessive peak current flowing within the converter.