Title :
Implementation of open-loop control for interleaved DCM/CCM boundary boost PFC converters
Author :
Laszlo Huber;Brian T. Irving;Claudio Adragna;Milan M. Jovanovic
Author_Institution :
Delta Products Corporation, Power Electronics Laboratory, P.O. Box 12173, 5 101 Davis Drive, RTP, NC 27709, U.S.A.
Abstract :
This paper is focused on the implementation of the open loop control method for interleaved DCM/CCM boundary boost PFC converters where the slave converter is synchronized to the turn-on instant of the master converter and both converters operate with current-mode control. It is shown that this method is the only open-loop control method that provides a stable operation. Implementations of the master-slave synchronization circuit in both analog and digital technology are described. Experimental results obtained on a 400-W, universal input, 400-V output prototype circuit with two interleaved DCM/CCM boundary boost PFC converters controlled by an integrated control circuit currently being developed are provided.
Keywords :
"Open loop systems","Master-slave","Frequency synchronization","Switching converters","Circuits","Interleaved codes","Switching frequency","Laboratories","Power supplies","Voltage control"
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE
Print_ISBN :
978-1-4244-1873-2
DOI :
10.1109/APEC.2008.4522845
