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:
Nov. 10, 2020
Filed:
Nov. 06, 2019
P-duke Technology Co., Ltd., Taichung, TW;
Lien-Hsing Chen, Taichung, TW;
Chun-Ping Chang, Taichung, TW;
Hao-Jen Wang, Taichung, TW;
Yung-Chi Chang, Taichung, TW;
P-DUKE TECHNOLOGY CO., LTD., Taichung, TW;
Abstract
A control circuit having extended hold-up time is coupled to a bus path of a conversion circuit. The control circuit includes a bypass circuit, an energy storage capacitor, and an auxiliary power circuit. The auxiliary power circuit supplies an energy storage voltage to the energy storage capacitor according to a working voltage provided by the conversion circuit. When a bus voltage of the bus path is less than or equal to the energy storage voltage, the energy storage voltage is supplied to the bus path through the bypass circuit so that the bus voltage is greater than or equal to a predetermined voltage within a hold-up time.