Hardware verification of a hyper-efficient (98%) and super-compact (2.2kW/dm3) isolated AC/DC telecom power supply module based on multi-cell converter approach

Due to the increasing electricity demand of data centers driven by the emergence of cloud computing and big data, the focus on the development of telecom and data center power supplies is shifted towards high efficiencies. In this paper, a multi-cell converter approach for a telecom rectifier module breaking through the efficiency and power density barriers of traditional single-cell converter systems is shown. The comprehensive optimization of the entire system with respect to efficiency and volume is described and the applied component loss models are explained. Furthermore, the design of a hardware demonstrator based on the optimization results is presented and several important design aspects are explained in detail.