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:
Apr. 30, 2019
Filed:
Apr. 30, 2018
Chicony Power Technology Co., Ltd., New Taipei, TW;
CHICONY POWER TECHNOLOGY CO., LTD., New Taipei, TW;
Abstract
A power conversion control circuit, which is applied to a flyback converter having a main switch, includes at least one bypass switch, a half-bridge power control unit, and an active-clamp control unit. The half-bridge power control unit is coupled to the main switch. The active-clamp control unit is coupled to the half-bridge power control unit and the main switch. When the flyback converter is operated in light-load condition, the active-clamp control unit turns on the at least one bypass switch, the half-bridge power control unit is coupled to the ground through the at least one bypass switch, the active-clamp control unit is coupled to the ground through the main switch, and the active-clamp control unit provides a low-side control signal to switch the main switch. Accordingly, it is to make the flyback converter have considerable power saving and energy saving in light-load condition.