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:
Dec. 06, 2011
Filed:
Jan. 21, 2009
Xu Yang, Xian, CN;
Yanping Yin, Xian, CN;
Ming Xu, Blacksburg, VA (US);
Yongjiang Bai, Xian, CN;
Qiaoliang Chen, Xian, CN;
Xu Yang, Xian, CN;
Yanping Yin, Xian, CN;
Ming Xu, Blacksburg, VA (US);
Yongjiang Bai, Xian, CN;
Qiaoliang Chen, Xian, CN;
FSP Technology Inc., Taoyuan, Taoyuan Hsien, TW;
Abstract
A phase shift control method for a boost converter and circuit implementation comprises a master phase and at least one slave phase. A master-phase inductor current flowing through the master phase has a master-phase charge time interval and a master-phase discharge time interval; a slave-phase inductor current flowing through the slave phase has a slave-phase charge time interval and a slave-phase discharge time interval. The method comprises: calculating an ideal switching timing whereat the slave-phase inductor current descends to a zero-current judgment value; obtaining a physical switching timing whereat the slave-phase charge time interval starts; calculating a conduction timing error between the physical switching timing and the ideal switching timing; determining the time length of the slave-phase charge time interval in the same cycle according to the conduction timing error and the master-phase charge time interval.