As the core power supply components of various electronic devices, the long-term operational stability of power supply products directly determines the user experience and safety factor of the entire equipment. Aging testing is the key link to verify the reliability of power supply products, and the corresponding aging standards are important basis for regulating the production and testing of power supply products. Power supply products for different application scenarios need to follow different aging standards, which form a complete system from test conditions and processes to judgment criteria, ensuring the performance of power supply products under various working conditions.
1. Core Requirements of Domestic General Aging Standards
Domestically, there is a clear national standard framework for the aging testing of power supply products, with the GB/T series of standards as the basic basis to follow. GB/T 5080.7, as the core standard for reliability testing, specifies the statistical methods for long-term power-on aging of power supply products. It requires power supply products to simulate the actual load and voltage environment during testing, and calculate the mean time between failures (MTBF) by accumulating the working hours of the equipment, so as to judge the aging resistance of power supply products.
The GB/T 2423 series focuses on the environmental aging testing of power supply products, including high temperature aging, temperature cycle aging and other projects, which put forward requirements for the working state of power supply products under different temperature and humidity conditions. For example, the high temperature aging link requires power supply products to operate continuously for more than 168 hours in a specified high temperature environment under rated load. After the test, parameters such as output voltage and ripple of power supply products must remain within the nominal range. GB/T 17215 formulates standards specifically for the life aging of power supply products, defining the aging attenuation limits of power supply products during the whole life cycle from the perspectives of electrical performance and mechanical reliability.
2. Applicable Dimensions of International General Aging Standards
Internationally, the IEC series is the core of aging standards for power supply products, while taking into account industry standards such as UL and ASTM. The IEC 60068-2 series focuses on the environmental stress aging of power supply products, covering multi-dimensional tests such as temperature, humidity and vibration, requiring no component damage or performance failure of power supply products after aging tests such as temperature cycle and salt spray corrosion. IEC 60950 and the updated IEC 62368 focus on information technology power supply products, setting strict regulations on safety indicators such as case temperature and insulation resistance after high temperature aging, to avoid potential safety hazards of power supply products due to aging.
For the shell and external components of power supply products, light aging standards such as ASTM G155 and ISO 4892 have also become important references, requiring the plastic shell of power supply products to have no obvious fading or cracking after xenon lamp simulated light aging, ensuring the appearance and structural stability of power supply products.
3. Practical Application of Aging Standards for Power Supply Products
Various aging standards are not implemented in isolation, but comprehensively applied in combination with the application scenarios of power supply products. Industrial-grade power supply products need to meet multiple aging standards such as high temperature, high humidity and vibration at the same time, while consumer-grade power adapters focus more on the standard requirements of normal temperature power-on aging and plug-in aging. In actual testing, power supply products need to complete 48-72 hours of preliminary screening aging to eliminate early failure products, and then conduct formal standard aging testing to ensure the accuracy of test data.
The power supply products of YIBENYUAN strictly follow the above core domestic and international aging standards in R&D and production, and verify the aging resistance and reliability of various power supply products under its banner to meet the use requirements of different scenarios through the whole process of aging testing.
Aging standards for power supply products are an important guarantee for product quality. Only when manufacturers and testing institutions strictly follow the corresponding standards to carry out aging tests can power supply products maintain stable performance in long-term operation and lay a solid foundation for the normal operation of various electronic devices.
