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:
Jan. 18, 2022
Filed:
Feb. 10, 2020
Delta Electronics (Shanghai) Co., Ltd, Shanghai, CN;
Delta Electronics (Shanghai) CO., LTD, Shanghai, CN;
Abstract
The present disclosure provides a control method of a voltage conversion circuit. The voltage conversion circuit includes a DC voltage input terminal, a primary side switch unit, a resonant inductance, a transformer, a secondary side switch unit and a DC voltage output terminal which are electrically coupled. The resonant inductance is connected to the transformer in series. The voltage conversion circuit also includes a resonant capacitance which resonates with the resonant inductance. The control method includes: controlling switch elements in the primary side switch unit and the secondary side switch unit, so that a range of a ratio Ton/Tr of a total conduction time Ton to a resonant period Tr of the voltage conversion circuit is (0, 1.8)U(2.7, 3.7)U(4.8, 5.5), and a quality factor Q of the voltage conversion circuit is less than or equal to 5, that is, Q≤5. The control method provided by the embodiment of the present disclosure can reduce the conduction loss and the switching loss of the voltage conversion circuit, thereby improving the efficiency and reducing the cost.