TY - GEN
T1 - A Soft-Switching Transformer-less Step-down Converter based on Resonant Current Balance Module
AU - Guan, Yueshi
AU - Cai, Hongye
AU - Zhang, Xiangjun
AU - Wang, Yijie
AU - Wang, Wei
AU - Xu, Dianguo
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/10
Y1 - 2020/10/10
N2 - In this paper, a soft-switching transformer-less step-down convertor based on resonant current balance module is proposed. Here a LED driver is taken as an example to analyze. The converter includes a stacked half bridge, resonant current balance modules, pairs of LED strings. The resonant current balance modules make the proposed convertor realize automatic current sharing, zero current switching (ZCS) and extending to a 1/N convertor. Based on the ampere-second balance principle, the proposed convertor can realize automatic current balance. The switching frequency is slightly larger than the resonant frequency, so it achieves ZCS. A 15.8W experimental prototype with 100V input voltage and 25V output voltage is established in the laboratory, verifying the feasibility of the oft-switching transformer-less step-down converter.
AB - In this paper, a soft-switching transformer-less step-down convertor based on resonant current balance module is proposed. Here a LED driver is taken as an example to analyze. The converter includes a stacked half bridge, resonant current balance modules, pairs of LED strings. The resonant current balance modules make the proposed convertor realize automatic current sharing, zero current switching (ZCS) and extending to a 1/N convertor. Based on the ampere-second balance principle, the proposed convertor can realize automatic current balance. The switching frequency is slightly larger than the resonant frequency, so it achieves ZCS. A 15.8W experimental prototype with 100V input voltage and 25V output voltage is established in the laboratory, verifying the feasibility of the oft-switching transformer-less step-down converter.
KW - Transformer-less
KW - resonant current balance module
KW - scalability
KW - switched capacitor
KW - zero current switching (ZCS)
UR - https://www.scopus.com/pages/publications/85101051592
U2 - 10.1109/IAS44978.2020.9334778
DO - 10.1109/IAS44978.2020.9334778
M3 - 会议稿件
AN - SCOPUS:85101051592
T3 - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
BT - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
Y2 - 10 October 2020 through 16 October 2020
ER -