New power supply structure for telecom equipments toward a unique level of conversion

The authors deal with concepts about supplying power to electronic or optical switching exchanges based on the latest technical developments. They start from current and future energy needs estimations. Reliability data of telecommunications and their impact on the power supply required performance are studied. To support the assumptions, components and architectural progress are examined. The weak points of today´s solutions are highlighted and it is shown that evolution is necessary from centralized to decentralized toward unlocalized energy resources. Here, battery packs may back-up groups of telecommunication boards needing low voltages like 3, 5, 12, or -12 V. Due to associated electronic control, they are independent and may be parallelized to increase the autonomy