Implementation of open-loop control for interleaved DCM/CCM boundary boost PFC converters

Laszlo Huber, Brian T. Irving, Claudio Adragna, Milan M. Jovanovic
2008 IEEE Applied Power Electronics Conference and Exposition. Conference Proceedings  
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
more » ... ribed. 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.
doi:10.1109/apec.2008.4522845 fatcat:5skbe73pibazvde3uuelbm6wx4