Research on Power Factor Correction boost inductor design optimization — Efficiency vs. power density

Nowadays, efficiency and power density are the most important issues for Power Factor Correction (PFC) converters development. However, it is a challenge to reach both high efficiency and power density in a system at the same time. In this paper, taking a Bridgeless PFC (BPFC) as an example, a useful compromise between efficiency and power density of the Boost inductors on 3.2 kW is achieved using an optimized design procedure. The experimental verifications based on the optimized inductor are carried out from 300 W to 3.2 kW at 220 Vac input.