Computer-Aided Systematic Topology Derivation of Single-Inductor Multi-Input Multi-Output Converters From Working Principle

Liping Mo, Jiangming Huang, Guipeng Chen*, Xinlin Qing, Yihua Hu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In this paper, aiming to systematically derive single-inductor multi-input multi-output (SI-MIMO) converters having favorable merits of high-density and low-cost, a basic model is firstly extracted from the working principle. Theoretically, by enumerating all possible connections of the basic model and one-by-one manually judging their effectiveness according to working criterions, multiple viable SI-MIMO topologies can be obtained, but with heavy workload. To simplify the topology derivation process, this paper also proposes a computer-aided method to replace the manual effort. By modelling the basic model and working criterions with graph theory, MATLAB codes can be developed to automatically screen out the effective topologies. With the proposed method, 8 three-port, 28 four-port and 115 five-port converters with single inductor are conveniently obtained, including both the existing and new topologies. Moreover, by configuring ports and switches in each derived topology, multiple specific converters can be further expanded. These converters can provide more options for practical engineering applications, and a new topology is also introduced and experimentally verified in the paper.

Original languageEnglish
Pages (from-to)2637-2649
Number of pages13
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Issue number6
Publication statusPublished - 24 Mar 2022

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China under Grant 51907172.


  • Automatic
  • single-inductor multi-input multi-output
  • topology derivation
  • working principle

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