Key technology research on 5G mobile communications power system

This paper has put forward a breakthrough design method for 5G power lighting and thermal. In order to improve the outdoor lightning protection ability, this paper presents a simplified compact lightning protection circuit, whose lightning protection ability can reach 20KA. It also advises to add an ORing MOSFET at the output end of power system, to solve the problem of the limit-exceeding of the synchronous rectifier electric stress when the lightning current flows backward. To make the product work under a wider temperature range and with higher reliability, this paper proposes a new thermal design, in which the power shells are designed as radiation fins, thus the MOSFETs that generate heat are installed directly on the shell, then the 5G power system could be small sized and light weight, and be more convenient to install and maintain.