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:
Nov. 13, 2018
Filed:
Apr. 18, 2017
Delta Electronics, Inc., Taoyuan, TW;
Hao Sun, Shanghai, CN;
Yueyong Meng, Shanghai, CN;
Lei Chang, Shanghai, CN;
Jinfa Zhang, Shanghai, CN;
DELTA ELECTRONICS, INC., Taoyuan, TW;
Abstract
A multi-stage power converter includes a first-stage power conversion circuit, a second-stage power conversion circuit, a second-stage analogic sampler, a pulse width modulator, a first isolator, a pulse width analyzer and a control unit. The second-stage analogic sampler samples power parameter from the second-stage power conversion circuit. The pulse width modulator converts the power parameter into a pulse width modulation signal. The pulse width analyzer receives the pulse width modulation signal through the first isolator in an isolation manner, calculates a duty ratio of the pulse width modulation signal according to a rising edge and a falling edge of the pulse width modulation signal, and calculates the power parameter according to the duty ratio. The control unit controls operations of the second-stage power conversion circuit according to the power parameter that is obtained by the pulse width analyzer.