In order to realize efficient power supply and energy storage in power supply field

it was an inevitable trend to introduce digital technology into power supply field comprehensively and appropriately in the future to realize the definition of power supply by digital power supply and software. In this paper

we analyzed typical technologies in the field of communication power supply. Several power supply technology schemes which can be applied in the field of digital power supply are listed and analyzed. Then the technical points and problems of digital power supply development were pointed out

so as to prepare for the future development of digital power supply.