Jhu J.-YLin Y.-CCHING-JAN CHEN2023-06-092023-06-092021https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124890893&doi=10.1109%2fIFEEC53238.2021.9662038&partnerID=40&md5=dc7e49b46bd206988e7470447fb70fbdhttps://scholars.lib.ntu.edu.tw/handle/123456789/632118This paper proposed a single-stage interleaved buck-boost-LLC resonant converter to achieve a wide input voltage range up to 8 times of minimum input voltage for railway and medical applications. In this paper,analysis of the proposed converter is performed and presented,including operation principles,gain characteristics,and achievable input voltage range. Zero-voltage switching (ZVS) conditions and the range of switches are also analyzed. Experimental results of a prototype converter with 20-160V input and 12 V/4 A output verifies the analysis and the accuracy of proposed dc gain equations. © 2021 IEEE.digital control; interleaved-buck-boost converter; LLC resonant converter; wide input voltage rangeDigital control systems; Electric current regulators; Electric inverters; Electric rectifiers; Energy conversion; Medical applications; Railroads; Zero voltage switching; Buck-boost; Buck/boost converters; Digital control; Gain characteristic; Input voltages; Interleaved-buck-boost converter; LLC resonant converter; Paper analysis; Single stage; Wide input voltage ranges; DC-DC convertersconference paper10.1109/IFEEC53238.2021.96620382-s2.0-85124890893