This paper proposes a stepping on-time adjustment (SOTA) control method with status judgment for multichannel interleaving critical mode (CRM) boost PFC converter. The interleaved control is a trend for high power applications. However, conventional interleaved methods are complicated to implement when more than two channels are required. The SOTA method with status judgment is proposed to simplify the complex control in multi-channel applications. This method not only increases the stability, but also improves the dynamic response. In this paper, the simulation and experimental results of a 600W three-channel interleaved CRM boost PFC converter are shown to verify the feasibility of the proposed SOTA method.
This paper proposes an on-time compensation method for CRMIDCM Boost PFC converter, which is based on the average current control without using multiplier. The proposed method can compensate the input current distortion caused by zero voltage switching (ZVS), valley switching (VS) and switching frequency limitation (SFL). A low-cost sample and hold (S/H) circuit is used to replace the multiplier in the average current control loop. By SIMPLIS simulation, a 160W CRMIDCM boost PFC converter with ZVS/VS and SFL function is used to verify the feasibility of the proposed on-time compensation method. Finally, heavy/light load and high/lowline voltage conditions will also be presented in this paper.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.