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.

Date of Patent:
Nov. 03, 2026

Filed:

Nov. 04, 2024
Applicant:

Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;

Inventors:

Liangliang Ren, Shanghai, CN;

Wei Wang, Shanghai, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 1/34 (2007.01); H02M 3/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33592 (2013.01); H02M 1/0058 (2021.05); H02M 3/01 (2021.05);
Abstract

The present disclosure provides an active clamp flyback converter and a control method, and relates to the technical field of converter. The control method includes: in response to that an input voltage of the active clamp flyback converter is less than a preset voltage threshold, or the input voltage of the active clamp flyback converter is less than a product of an output voltage of the active clamp flyback converter and a turns ratio of the transformer, in a same switching cycle, controlling the clamp switch to turn on when the transformer is in a demagnetization stage; and controlling the clamp switch to turn off when a resonant current of the clamp capacitor and a leakage inductance of the transformer reaches a preset current threshold.


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Ren, Liangliang. (2026). Active clamp flyback converter and control method (U.S. Patent No. 12785578). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12785578

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