Design and Analysis of a Novel Trans-inverse DC-DC Converter

This paper explores the coupled-inductor architectures for a trans-inverse DC-DC converter. The parasitics (e.g., leakage inductance and AC resistance) will inevitably affect the performance of the coupled-inductor and thus, the entire system. More specifically, when ignoring these parasitics, the operation principle of the DC-DC converter changes and the boosting capability is degraded. Considering the application in a trans-inverse DC-DC converter, three winding arrangements are explored in detail to demonstrate their advantages and disadvantages. Finite element analysis (FEA) on the magnetics is conducted in this paper to simulate the leakage inductance and AC resistance. Finally, the performance of the trans-inverse converter with the designed winding arrangements is verified by experimental tests.