Reliability Investigation of PCs' SMPSs

Abdi, B.; Askari, M.; Yazdanparast, L.; Ranjbar, A. H.
September 2011
Journal of Energy & Power Engineering;Sep2011, Vol. 5 Issue 9, p886
Academic Journal
Today reliability is one of the serious requirements of electronic systems. The numbers of system failures, repair cost, guarantee, etc. are estimated by reliability estimation. In this paper reliability of a switching power supply, which is used for personal computers, is evaluated. It will show that the most of failure rates depends on power circuit because of more stresses and dissipations. Derating effect of devices on the failure rate is discussed. A prototype power supply's waveforms are used for stress detection and calculation of dissipations.


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