Title :
Current driven synchronous rectifier with primary current sensing for LLC converter
Author :
Wu, Xinke ; Li, Baohong ; Qian, Zhaoming ; Zhao, Rongxiang
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A new synchronous rectifier driving circuit is proposed using primary current sensing and magnetizing current cancellation for LLC converter. The primary current in primary winding of transformer is used to generate the driving signal of SR. Because the magnetizing current of transformer is included in primary current, a current compensating scheme in current transformer is used to cancel the magnetizing current and generate a usable driving signal. With synchronous rectifier high efficiency can be achieve easily for LLC converter.
Keywords :
current transformers; power convertors; rectifiers; LLC converter; current compensating scheme; current driven synchronous rectifier; current transformer; magnetizing current cancellation; primary current sensing; Current driven Synchronous Rectifier; Primary current sensing;
Conference_Titel :
Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-2893-9
Electronic_ISBN :
978-1-4244-2893-9
DOI :
10.1109/ECCE.2009.5316463
