A Novel FMBL PFC Rectifier Is Proposed, In Which The High Efficiency Over A Wide Input Range Can Be Achieved. In The Proposed Rectifier, A BTBBL PFC Rectifier Is Adopted At High-line Voltages And A Three-level Bridgeless Boost PFC Rectifier (TLBL PFC) Is Formed To Achieve High Efficiency At Low-line Voltages. Compared With The Traditional Bridgeless Boost PFC Rectifier, An Extra Low-voltage Bidirectional Switch (usually Composed Of Two Switches) Is Added; Therefore The Increased Cost Is Low. At Both High- And Low-line Conditions, The Low CM Noise Can Be Achieved Due To The Direct Connection Between The Input Power Grid And The Output Electrolytic Capacitor During Half-line Cycle. The Proposed FMBL PFC Can Be Simply Treated As Two Independent Boost PFC Circuits According To The Line Voltage.

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