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:
Feb. 03, 2026
Filed:
Oct. 18, 2023
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Abstract
A control method for a flyback power converter is provided. Firstly, a flyback power converter is provided. The flyback power converter includes a transformer, a leakage inductance energy recovery circuit and a control unit. Then, a delayed turn-off time period is defined by the control unit. Then, a detection signal related to a current flowing through the leakage inductance energy recovery circuit is detected. If the detection signal is greater than or equal to a first set value, a switch element of the leakage inductance energy recovery circuit is turned on. If the detection signal is lower than or equal to a second set value, the second switch element is turned off after the delayed turn-off time period.