Reliability Measures for Switched-Mode Power Supplies (SMPS) with Redundant Fly Back Transformer

Abstract

Now a day's reliability testing is an integral part of Electronics Engineering. For successful usage of electronic components, modeling and estimation of their reliability has become critical. In this paper, the authors have analyzed SMPS (AC to DC converter) mathematically for evaluation of its performance measures. A standby fly back transformer has been used for the purpose of improving the system's reliability. We can online this standby unit through an imperfect switching device on failure of main operable unit. To solve the mathematical model Supplementary variable technique and Laplace transform techniques are used. Steady state behavior and a specific case have also computed to improve practical utility of the model. Also the results are obtained for availability and cost function.