**7. Conclusions**

Eight wide-range soft-switching FB MMDCs are proposed and discussed. Two of the most promising converters are found and explained in detail, and a comparative evaluation among the proposed converters is also provided. The experimental results agree with the theoretical prediction. The IZVS\_SMM and IZVZCS\_SAC&CAC show clear advantages compared to other solutions, e.g., smaller duty ratio loss, wide-range soft switching, less conduction loss, a simpler and more compact primary circuit and lower added cost. Thus, these two converters are more suitable for high input voltage applications with more primary modules. Furthermore, the IZVS\_SMM has some special characteristics. its secondary rectified voltage is a TL waveform, which results in lower input and output filter requirements. The IZVS\_SMM is the only topology which can be used in the high input voltage applications with controllable multi-output ports.

**Author Contributions:** Software, X.L.; formal analysis, J.C. and Y.S.; data curation, X.L.; writing—original draft preparation, J.C.; writing—review and editing, Y.S.; project administration, H.D. and Y.S.; All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Conflicts of Interest:** The authors declare no conflict of interest.