99% Efficient 2.5-kW Four-Level Flying Capacitor Multilevel GaN Totem-Pole PFC

Qingyun Huang,Qingxuan Ma,Pengkun Liu,Alex Q. Huang,Michael De Rooij

IEEE Journal of Emerging and Selected Topics in Power Electronics（2021）

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摘要

In this article, a high-efficiency and high-density 2.5 kW four-level flying capacitor multilevel (FCML) totem-pole bridgeless power-factor-correction (PFC) rectifier with 200 V GaN devices is analyzed, designed, and tested. This 2.5 kW four-level continuous conduction mode (CCM) GaN totem pole PFC operates with 360 kHz current ripple frequency which significantly reduces the inductor size while k...

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关键词

Gallium nitride,Inductors,Switches,Capacitors,Topology,Silicon,Switching frequency

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