Research on a Negative Non-isolated Multi-port DC-DC Converter Based on LC Resonant

The birth of the fifth generation wireless communication technology marks a significant increase in data transmission speed, a significant reduction in latency, and a significant increase in device connectivity. In order to meet the traffic needs of 5G and MIMO, this project studies a DC/DC converter with negative polarity single input and positive polarity multiple output based on this background. The main focus of this project is to establish a new topology structure of an LC resonant negative polarity single input positive polarity multiple output non isolated converter. This topology structure is based on the four-switch Buck-Boost (FSBB) converter, replacing the switch in the FSBB with a diode, simplifying the two-port output circuit topology, and using single output as the main analysis point, conducting modal analysis, circuit characteristic analysis. The analysis is verified using simulation experiment.