Two-Phase Interleaved Inverse-Coupled Inductor Boost Without Right Half-Plane Zeros

This paper presents a novel two-phase interleaved inverse-coupled inductor boost (IICIB) without right half-plane (RHP) zeros. The input and output inductors in the IICIB have been all integrated into one magnetic core, and there is a 180° phase shift between the driving signals. Thanks to the coupling relationship between the four inductors in the new proposed converter, a smaller core size and higher power density can be achieved because the core size is normally determined by the energy storage requirement. Meanwhile, with the RHP zeros eliminate, a higher bandwidth with wide range of control over the applied input or output voltage can be achieved. The new converter not only has the aforementioned advantages, but also shows great potential for current ripple reduction as a result of the interleaved structure. Finally, experimental verification is provided to illustrate the effectiveness of the theoretical findings and design approaches.