Ladder Multi-resonant Switched-capacitor Converters with Extended Voltage Gain Range
作者： Wei Ding , Zhenning Li , Chunxiao Hao , Shouxiang Li
DOI: 10.1109/IECON43393.2020.9254784
关键词: Voltage 、 Modulation 、 Open-loop controller 、 Transistor 、 Converters 、 Electrical engineering 、 Diode 、 Switched capacitor 、 Physics 、 Capacitor
摘要: The traditional ladder switched-capacitor converter (SCC) has limited voltage gain range, sacrificing the overall efficiency severely to extend range. In this paper, Ladder multi-resonant converters (MRSCC) with extended range are proposed. By adding multi resonance core and adopting on-time fixed frequency modulation, a "charge balance" state overlapped resonant currents is introduced. Consequently, conversion ratio of RSC can be regulated continuously, widely efficiently even at light load condition. addition, all transistors turned on zero-current-switching (ZCS) operation diodes off ZCS operation. Moreover, complete soft-charging between capacitors obtained, eliminating charge-sharing loss effectively. A comprehensive analysis principle, voltage-gain curve component stress presented. An open loop prototype was built verify converter.
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