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:
May. 27, 2014
Filed:
Oct. 19, 2010
Fei LI, Shanghai, CN;
Hongjian Gan, Shanghai, CN;
Fei Ji, Shanghai, CN;
Xin LI, Shanghai, CN;
Delta Electronics, Inc., , TW;
Abstract
The configurations of a buck type and a buck/boost type converter systems and a controlling method thereof are provided in the present invention. The proposed buck/boost type converter system includes a rectifier bridge, a first auxiliary circuit including a first unidirectional switch coupled to the rectifier bridge and a second unidirectional switch coupled to the first unidirectional switch, a first capacitor coupled to the first unidirectional switch and the rectifier bridge, a buck/boost converter having a first input terminal coupled to the first unidirectional switch, a second input terminal coupled to the first capacitor, a first output terminal coupled to the second unidirectional switch and a second output terminal, a second capacitor electrically connected to the first and the second output terminals in parallel, and a DC source coupled to the second unidirectional switch.