Proactive Optimization Design of Power Supplies Based on Belief Reliability Theory

In the field of high-precision computer power supply, maintaining the long-term stability and reliability of circuits presents significant challenges, especially as traditional power supply circuits are prone to performance degradation over prolonged periods. This article employs the TL431 topology to improve the power feedback loop originally composed of operational amplifiers, based on Belief Reliability Theory. Additionally, this paper utilizes Electronic design automation (EDA) to develop a global degradation simulation analysis method, enabling systematic collection of simulation data on the power output voltages of two types of power supply circuits over a period from 0 to 87,600 hours. Through qualitative and quantitative evaluation of the data, the following conclusions can be drawn: the improved circuit shows minimal response to degradation time throughout the entire testing period, significantly reduces voltage fluctuations, and meets threshold requirements during the test period. This improvement significantly enhances the stability and durability of the power supply circuit. In summary, this study confirms the effectiveness of the proactive design improvement method for power supply circuits based on Belief Reliability Theory. It not only enhances circuit performance but also provides a practical solution to the issue of long-term performance degradation in power supplies for high-precision devices.