The effect of topology on life time of SMPS

Recently, life time is one of the serious requirements of electronic systems. The numbers of system failures, repair cost, guarantee, etc are estimated by life time estimation. In this paper, the reliability of a switching power supplies is evaluated. It will show that the most of failure rates depends on power circuit which it is named topology. Reliability of two different topologies, including half-bridge and flyback, will be discussed in this paper. It will be shown that flyback topology has better reliability during less power parts.