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:
Jun. 29, 2021
Filed:
May. 13, 2020
Applicant:
Weltrend Semiconductor Inc., Hsinchu, TW;
Inventors:
Mu-Chih Lin, Hsinchu, TW;
Chun-Teh Chen, Hsinchu, TW;
Ren-Yi Chen, Hsinchu, TW;
Ming-Ying Kuo, Hsinchu, TW;
Jeng-Cheng Liu, Hsinchu, TW;
Assignee:
WELTREND SEMICONDUCTOR INC., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/08 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33523 (2013.01); H02M 1/083 (2013.01); H02M 1/0058 (2021.05);
Abstract
A control method is introduced to operate an ACF power converter under a non-complimentary mode. A high-side switch is turned ON at least twice within a switching cycle of a low-side switch, to provide at least two high-side ON times. One of the high-side ON times follows the end of demagnetization time of a transformer in the ACF power converter, and the other follows the end of the blanking time that controls the maximum switching frequency of the low-side switch.