Networked DC nano-grids are based on simultaneous power and data transfer between nodes of the power distribution networks. The node of a networked DC nano-grid can be realized using a multi-port power converter. The multiport power converter integrates several loads within a single unit. Hence, the number of power converters of a system can be minimized to reduce cost, complexity, and to improve efficiency and power density. Moreover, the number of ports of a single node depends on the system architecture and port characteristics depend on the connected load or source. Interconnection between these nodes can be done using one of the ports which facilitates power transfer in addition to data. In this paper, such a multi-port power converter is proposed with a suitable power modulation method. The proposed converter is mathematically analyzed to understand the operation and it is validated using software simulations.