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:
Sep. 26, 2023
Filed:
Jun. 19, 2020
Southeast University, Nanjing, CN;
Csmc Technologies Fab2 Co., Ltd., Wuxi, CN;
Shen Xu, Wuxi, CN;
Minggang Chen, Wuxi, CN;
Wanqing Yang, Wuxi, CN;
Dejin Wang, Wuxi, CN;
Rui Jiang, Wuxi, CN;
Weifeng Sun, Wuxi, CN;
Longxing Shi, Wuxi, CN;
SOUTHEAST UNIVERSITY, Jiangsu, CN;
CSMC TECHNOLOGIES FAB2 CO., LTD., Jiangsu, CN;
Abstract
Disclosed are a system and method for controlling an active clamp flyback (ACF) converter. The system includes: a drive module configured to control turning-on or turning-off of a main switching transistor Sand a clamp switching transistor S; a main switching transistor voltage sampling circuit configured to sample a voltage drop between an input terminal and an output terminal of the main switching transistor S; a first comparator connected to the main switching transistor voltage sampling circuit and configured to determine whether a sampled first sampling voltage is a positive voltage or a negative voltage; and a dead time calculation module configured to adjust, according to an output of the first comparator and a main switching transistor control signal DUTYL of a current cycle, a clamp switching transistor control signal DUTYH of next cycle outputted by the drive module.