Telecom power supply systems form the backbone of modern telecommunications. Without them, communication services would falter during power outages or fluctuations. Their. BENNING has been supplying battery-based AC and DC power supplies to various mobile and fixed network operators worldwide for decades and has invested heavily in the development of highly efficient power supplies for energy-saving and reliable operation. This article focuses on the Analog Devices MAX15258, which is designed to accommodate up to two MOSFET drivers and four external MOSFETs in single-phase or dual-phase boost/inverting-buck-boost. Figure 1 presents a simplified diagram of a typical telecommunications DC power system with an emphasis on how –48 V DC is created and distributed. The telecom DC power system typically includes the national electricity grid system, a diesel generator, a self-acting AC automatic transfer switch. Power supplies for information and communication devices are important devices for providing stable power supply 24 hours a day, 365 days a year for the various communication devices used to provide data communication services, such as telephone and Internet. There are a wide variety of such power.