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. 12, 2003
Filed:
Nov. 30, 2001
Applicant:
Inventor:
Masuhide Ikeda, Nagano-ken, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/10 ;
U.S. Cl.
CPC ...
G05F 1/10 ;
Abstract
A voltage conversion circuit incorporate many of what were previously discrete components into a single IC, whereby the number of externally disposed discrete components is reduced as much as possible to reduce the overall size while maintaining high power conversion efficiency. This is achieved by using multiple wells within wells, and coupling the wells to specific voltage potentials to protect the circuit from failure.