Performance comparison between buck and boost CRM PFC converter

@article{Yang2010PerformanceCB,
  title={Performance comparison between buck and boost CRM PFC converter},
  author={Jianyou Yang and Junming Zhang and Xinke Wu and Zhaoming Qian and Ming Xu},
  journal={2010 IEEE 12th Workshop on Control and Modeling for Power Electronics (COMPEL)},
  year={2010},
  pages={1-5}
}
This paper presents a detailed performance comparison (including efficiency, EMC performance and component electrical stress) between boost and buck type PFC under critical conduction mode (CRM). In universal input (90–265Vac) applications, the CRM buck PFC has around 1% higher efficiency compared to its counterpart at low-line (90Vac) condition. Due to the low voltage swing of switch, buck PFC has a better CM EMI performance than boost PFC. It seems that the buck PFC is more attractive in low… CONTINUE READING
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