Reliability Evaluation Method of Linear Regulated Power Supply In Nuclear Radiation Environment

Electronic products are the key link to realize automation and intelligence of equipment. As a direct power source to ensure the operation of electronic products, linear voltage regulators are the core components in linear power systems. Once the degradation fails, the whole machine will be paralyzed, resulting in huge economic loss. At present, the degradation failure mode analysis of linear regulators has been studied extensively. However, in some special environments, especially in the radiation environment, degradation analysis and reliability research are very scarce. This paper presents a degradation analysis and reliability evaluation method for the AP1117E linear regulator devices under nuclear radiation environment. This method combines Simulink simulation, Bootstrap resampling and Monte Carlo method to overcome the difficulties of small samples and data shortage. Finally, the comparison with the evaluation results obtained from Bootstrap sampling proves the feasibility of the proposed method.