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Applying distributed power modules in telecom systems

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2 Author(s)
Lindman, P. ; Energy Systems Div., Ericsson Components AB, Stockholm, Sweden ; Thorsell, L.

The design of modern decentralized power systems in telecommunication applications are increasingly realized by using distributed DC/DC power modules. Power modules are usually characterized by high switching frequencies, which enable the use of small ferrite magnetics and ceramic capacitors to enhance the reliability, the power density, and the possibility of live insertion, all desired features in new power system designs. However, to utilize the advantages of power modules there are a number of considerations to be made in the design. These considerations are addressed focusing on telecom systems with an average power dissipation of <10 W/board, in free convection, i.e., nonforced convection, and <80 W/board, in forced convection cooled cabinets of commonly used mechanical sizes and designs for telecommunication equipment

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Power Electronics, IEEE Transactions on  (Volume:11 ,  Issue: 2 )