TY - GEN
T1 - High-Conversion Ratio Multi-Phase VRM Realized with Generic Modular Series-Capacitor Boost Cells
AU - Hamo, Eli
AU - Peretz, Mor Mordechai
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - This paper introduces a high-conversion ratio multi-phase non-isolated DC-DC topology built from generic series-capacitor boost cells. Using a stand-alone LC cell, the approach contributes to a high modularity of the resulting converters and enables high conversion ratios. The unique interaction between the capacitor and the inductor results in a soft-charging operation, which curbs the losses of the converter and contributes to higher efficiency. The method was used to create a multi-phase step-up DC-DC module for microinverters. The new converter significantly extends the effective duty ratio and lowers the voltage stress of the transistors. In addition, it has inherent current sharing to balance the load between the phases. Experimental results of a modular interleaved two-phase prototype demonstrate an excellent proof of design methodology concept and agree well with the simulations and theoretical analyses developed in this study.
AB - This paper introduces a high-conversion ratio multi-phase non-isolated DC-DC topology built from generic series-capacitor boost cells. Using a stand-alone LC cell, the approach contributes to a high modularity of the resulting converters and enables high conversion ratios. The unique interaction between the capacitor and the inductor results in a soft-charging operation, which curbs the losses of the converter and contributes to higher efficiency. The method was used to create a multi-phase step-up DC-DC module for microinverters. The new converter significantly extends the effective duty ratio and lowers the voltage stress of the transistors. In addition, it has inherent current sharing to balance the load between the phases. Experimental results of a modular interleaved two-phase prototype demonstrate an excellent proof of design methodology concept and agree well with the simulations and theoretical analyses developed in this study.
KW - DC-DC power converters
KW - high conversion ratio
KW - microinverters
KW - series-capacitor boost converter
KW - voltage regulator module
UR - http://www.scopus.com/inward/record.url?scp=85171425063&partnerID=8YFLogxK
U2 - 10.1109/COMPEL52896.2023.10220993
DO - 10.1109/COMPEL52896.2023.10220993
M3 - Conference contribution
AN - SCOPUS:85171425063
T3 - 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023
BT - 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023
PB - Institute of Electrical and Electronics Engineers
T2 - 24th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2023
Y2 - 25 June 2023 through 28 June 2023
ER -