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. 27, 2012
Filed:
Oct. 24, 2008
Sang-cheol Moon, Bucheon, KR;
Gwan-bon Koo, Bucheon, KR;
Jin-tae Kim, Bucheon-si, KR;
Young-bae Park, Anyang, KR;
Sang-Cheol Moon, Bucheon, KR;
Gwan-Bon Koo, Bucheon, KR;
Jin-Tae Kim, Bucheon-si, KR;
Young-Bae Park, Anyang, KR;
Fairchild Korea Semiconductor, Ltd., Bucheon, KR;
Abstract
In a power converter, a primary coil receives an input voltage, and a switch includes a first electrode, a second electrode coupled to the primary coil, and a control electrode. An output unit includes a secondary coil, and outputs an output voltage. The primary coil and the secondary coil form a transformer, and the input voltage is converted to the output voltage by the transformer. A controller receives a sensing voltage corresponding to a switch current flowing between the first electrode and the second electrode of the switch, detects a valley point of a voltage between the first electrode and the second electrode of the switch based on the sensing voltage, and transmits a control signal to the control electrode of the switch in accordance with the valley point.