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:
Mar. 14, 2006
Filed:
Nov. 30, 2004
Applicants:
Tae Ook Park, Anyang, KR;
Sung Cheol Kim, Suwon, KR;
Chan Gyu Jang, Hwasung, KR;
Inventors:
Assignee:
Samsung Electro-Mechanics Co., Ltd., Kyungki-Do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed herein is a flyback converter with a synchronous rectifier which is applied to a power supply of a portable computer such as a notebook PC. The flyback converter is operated in a critical conduction mode to turn on/off a main switch at a zero crossing point of an output voltage. The flyback converter is also adapted to control the duty cycle of a synchronous switch using a Zener diode. Therefore, there is no need for a Schottky diode to be connected in parallel with the synchronous switch, resulting in simplification in circuit design.