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Tolerance‐based reliability and optimization design of switched‐mode power supply
Author(s) -
Zeng Ying,
Li YanFeng,
Li XiangYu,
Huang HongZhong
Publication year - 2019
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/qre.2556
Subject(s) - reliability (semiconductor) , reliability engineering , power (physics) , sensitivity (control systems) , optimal design , electronic engineering , mode (computer interface) , engineering , computer science , automotive engineering , physics , quantum mechanics , machine learning , operating system
Due to its high efficiency and low power consumption, switched‐mode power supply (SMPS) represents the development trend of the stabilized voltage power supply. However, tolerance has become one of the key factors in the design of SMPS because of the process fluctuation of electronic components, unstable input parameters of the circuit system, influence of working conditions and environment, and the effect of aging. In order to improve the reliability of SMPS and reduce the manufacturing cost, this paper proposes a reliability analysis and optimization design method based on the tolerance and sensitivity analysis. Finally, this method is applied to the tolerance design for the positive switching power supply of the SMPS circuits, and the optimal tolerance design scheme is obtained. Furthermore, the reliability and probability density curves are evaluated.