Reliability Prediction Approach of DC-DC Converter with Electrical Stress Analysis

DC-DC converter has been widely used in the electronic devices and systems for electric power supply. Until now, there have been many studies to improve reliability including electric characteristics of DC-DC converter. First, this paper shows a simple case of worst case circuit analysis (WCCA) on the output voltage of DC-DC converter with Monte Carlo Analysis (MCA) by electrical simulation program. Next, it presents a reliability prediction approach of DC-DC converter with electrical stress analysis by electrical simulation program and with reliability prediction method based on Telcordia SR-332. This approach can be helpful for accurate predicting the lifetime or failure rate of DC-DC converter. The way of reliability prediction with electrical stress analysis is discussed and the result of estimating failure rate of DC-DC converter is shown.