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. 07, 2020
Filed:
Nov. 03, 2017
Delta Electronics, Inc., Taoyuan, TW;
Yu-Ming Chang, Taoyuan, TW;
DELTA ELECTRONICS, INC., Taoyuan, TW;
Abstract
A power converter includes a primary-side switching circuit, a resonant circuit, a transformer, a secondary-side rectifying circuit, and a processing circuit. The primary-side switching circuit includes switches and configured to switch the switches to be on or off based on a switching frequency to convert a dc input voltage to an AC signal. The resonant circuit is coupled to the primary-side switching circuit and configured to receive the AC signal to provide a resonant current. The primary winding of the transformer is coupled to the resonant circuit. The secondary-side rectifying circuit is coupled to the secondary winding of the transformer and configured to rectify the secondary ac signal output by the secondary winding and output an output voltage. The processing circuit receives a cut-off current detecting signal via a current detecting circuit if the corresponding switch is turned off, and adjusts the switching frequency accordingly.