Switched-inductor-based non-isolated large conversion ratio, low components count DC-DC regulators

Two switched-inductor cells are proposed. One of them is integrated into a boost structure, and the other one in a buck structure to get novel step-up, respectively step-down non-isolated converters with a large dc gain. The converters are operated at a high switching frequency, allowing for the inductors to be printed in PCB. Small size and high power density is obtained. The experimental results confirm the theoretical analysis. Comparison with converters with the same components count shows the advantages of the proposed regulators. The proposed cells are easily generalized by adding more inductors in order to obtain any required dc voltage gain.