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. 19, 2015
Filed:
May. 13, 2012
Applicants:
Yuan-wen Chang, Hsin-Chu, TW;
Ren-yi Chen, Hsin-Chu, TW;
Yi-lun Shen, Hsin-Chu, TW;
Inventors:
Assignee:
Leadtrend Technology Corp., Science-Based Industrial Park, Hsin-Chu, TW;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); G06F 1/00 (2006.01); H03K 3/84 (2006.01); H02M 1/36 (2007.01); H02M 3/156 (2006.01); H03K 4/502 (2006.01);
U.S. Cl.
CPC ...
H03K 3/84 (2013.01); H02M 1/36 (2013.01); H02M 3/156 (2013.01); H03K 4/502 (2013.01);
Abstract
A method for controlling voltage crossing a power switch of a switched-mode power converter includes the steps of: controlling a switch frequency of the power switch of the switched-mode power converter to a first frequency as activating the switched-mode power converter; and then changing the switch frequency of the power switch to a second frequency after the switched-mode power converter is activated for a predetermined time; wherein the first frequency is lower than the second frequency.