Reliability Design of Switching Power Supply

Switching Power Supply is the core part of various systems. The demand of switching Power Supply is increasing, and the demand of reliability is higher and higher. There are many factors involved in system reliability. At present, the main misunderstanding of people's understanding is that the reliability is attributed to the reliability of components and the process of manufacturing and assembly, ignoring the decisive role of system design and ambient temperature on the reliability.

In the field of civil electronics, Japanese statistics show that 80% of reliability problems are caused by design (Japan also attributes components selection, quality level determination, load rate of components, etc.). The data from the above two aspects indicate that faults caused by design and components (selection of components, determination of quality level and load rate of components) account for about 80% of the fault causes of switching power supply. It is of great significance to reduce the fault of switching power supply caused by these two aspects. In a word, for the system designer, need to clearly establish the important concept of "reliability", the reliability of the system as the important technical indicators, serious about the reliability of the switching power supply design work, and to take adequate measures to improve the reliability of switch power supply, can make the system and to achieve a stable and reliable products. This article will study and elaborate from these two aspects.

Best regards,

Mandy Huang