B2B PSU Solutions: 80Plus Gold/Platinum PC Power Supplies

The design and manufacturing of power supply for pc is a highly professional technical work that integrates electrical engineering, electronic technology, material science and industrial design, and its technical level and manufacturing process directly determine the performance, reliability and quality of the product. Shenzhen Yijian Technology Co., Ltd., with its more than 20 years of professional experience in the R&D and production of power supply for pc, has accumulated rich technical experience and manufacturing experience in this field, and has formed a set of mature and perfect design and manufacturing system, which ensures that every power supply for pc product produced by the company has excellent quality and stable performance. The R&D and design of Yijian’s power supply for pc products follow the principle of "customer demand-oriented, technical innovation-driven", and carry out the whole process of product design from market research, demand analysis, scheme design, prototype development to sample testing. Before the start of each new product R&D project, the R&D team will conduct in-depth market research, understand the latest market demand, technical trends and competitor products of power supply for pc, and combine the company’s own technical advantages and development strategy to determine the product positioning, technical indicators and design scheme of the new product. The demand analysis stage is to refine the specific needs of different customer groups for power supply for pc products, including power rating, energy efficiency level, structural type, interface configuration, protection function, noise control and other aspects, and form a detailed product demand specification, which is the basis for the subsequent scheme design. The scheme design stage is the core of the R&D and design of power supply for pc products, which involves the design of the main circuit, control circuit, protection circuit, cooling system and mechanical structure of the power supply. The main circuit design of power supply for pc mainly includes the rectifier filter circuit, PFC circuit, inverter circuit and output rectifier filter circuit, which is responsible for converting the alternating current of the power grid into stable direct current. Yijian’s R&D team adopts advanced circuit topologies such as LLC resonant conversion and active PFC in the main circuit design, which can effectively improve the conversion efficiency and power factor of the power supply, reduce the loss and heat generation of the circuit, and improve the overall performance of the product. The control circuit design is to realize the precise control of the output voltage and current of the power supply through the microcontroller (MCU) or dedicated power management chip, and realize the functions of intelligent temperature control, over-protection and fault diagnosis. Yijian uses high-performance and high-reliability microcontrollers and power management chips in the control circuit design, and develops independent control software, which can realize the flexible adjustment and precise control of the power supply parameters, and improve the intelligence and reliability of the product. The protection circuit design is an important part to ensure the safe operation of power supply for pc products, and Yijian’s R&D team designs a complete multi-level protection circuit according to the international safety standards and product characteristics, including over-current, over-voltage, under-voltage, over-temperature, over-power and short-circuit protection, which can quickly and accurately respond to various abnormal working conditions and protect the power supply and computer components from damage. The cooling system design is to ensure that the power supply for pc products can work within the normal temperature range, and Yijian’s R&D team carries out the optimized design of the cooling system according to the power rating, heat generation and application scenario of the product, including the selection of fans, the design of air ducts and the layout of heating components, to realize the balance between heat dissipation effect and noise control. The mechanical structure design of power supply for pc products mainly includes the design of the shell, the layout of internal components and the design of interfaces, which needs to consider the factors of product size, weight, strength, heat dissipation and compatibility. Yijian’s mechanical structure design follows the international ATX standard, and at the same time, optimizes the internal component layout and shell structure according to the product characteristics, which can improve the structural strength and heat dissipation performance of the product, and ensure the compatibility of the product with most computer cases and motherboards on the market. The prototype development stage is to make the physical prototype of the power supply for pc product according to the design scheme, and carry out the debugging and optimization of the prototype. Yijian has a professional prototype development workshop and a group of experienced technicians, who can quickly make high-quality product prototypes according to the design drawings, and carry out the comprehensive debugging of the prototype’s electrical performance, mechanical performance and cooling performance. During the debugging process, the technicians will test and adjust various parameters of the prototype, such as output voltage, current, efficiency, ripple coefficient, noise and temperature, to ensure that the prototype meets the design requirements and technical indicators. For the problems found in the debugging process, the R&D team will timely optimize and improve the design scheme to ensure the performance and reliability of the prototype. The sample testing stage is the final link of the R&D and design of power supply for pc products, which is to conduct a series of rigorous tests on the optimized prototype to verify whether the product meets the design requirements, international standards and market demand. Yijian has a professional R&D laboratory equipped with advanced testing equipment and instruments, which can carry out various performance tests and reliability tests on power supply for pc samples, including electrical performance test, energy efficiency test, safety test, EMC test, high and low temperature test, aging test, vibration test and drop test. The electrical performance test is to test the basic electrical parameters of the sample, such as output voltage accuracy, current capacity, ripple and noise, dynamic response and load regulation, to ensure that the sample has excellent electrical performance. The energy efficiency test is to test the conversion efficiency of the sample under different load conditions to verify whether the sample meets the requirements of the corresponding 80Plus energy efficiency certification. The safety test is to test the safety performance of the sample according to the international safety standards such as UL, CE and CCC, including insulation resistance, withstand voltage, leakage current and short-circuit protection, to ensure the safety of the product in use. The EMC test is to test the electromagnetic compatibility of the sample, including electromagnetic emission and electromagnetic immunity, to ensure that the product does not produce excessive electromagnetic interference to the surrounding equipment and is not affected by the electromagnetic interference of the surrounding environment. The high and low temperature test, aging test, vibration test and drop test are to test the reliability and environmental adaptability of the sample, to verify whether the sample can work stably under various harsh working conditions such as high and low temperature, long-term operation, vibration and collision, and to ensure the long-term reliability and service life of the product. Only the samples that pass all the tests can enter the mass production stage. The mass production of Yijian’s power supply for pc products is carried out in accordance with the strict ISO9001 quality management system, and the entire production process is under the strict control of the intelligent production system and the ubiquitous QC team, ensuring the high quality and consistency of the products. The production process of power supply for pc products mainly includes component procurement, incoming inspection, SMT patch, plug-in welding, assembly, debugging, testing, aging, packaging and storage. Yijian has established a strict supplier evaluation and management system, and all component suppliers of power supply for pc must pass the strict qualification review and on-site inspection to ensure the quality and stability of the components. The incoming inspection stage is to conduct a comprehensive inspection of all purchased components, including appearance inspection, performance testing and certification verification, and only the components that pass the inspection can be put into production. The SMT patch and plug-in welding stages are the core of the electronic manufacturing process, which are to solder the surface mount components and through-hole components to the printed circuit board (PCB) according to the design requirements. Yijian uses advanced SMT automatic patch equipment and wave soldering equipment, which can realize the high-precision and high-efficiency soldering of components, and greatly improve the welding quality and production efficiency. The assembly stage is to assemble the welded PCB, transformers, fans, shells and other components into the finished power supply for pc product according to the assembly process, and the assembly workers strictly follow the E-SOP electronic operation manual to ensure the standardization and consistency of the assembly process. The debugging and testing stages are to debug and test the assembled finished products, including the adjustment of electrical parameters and the comprehensive performance test, to ensure that each product meets the technical indicators and quality requirements. The aging stage is to put the tested qualified products into the aging room for a certain period of aging test under the rated load or simulated working conditions, which can effectively screen out the potential unqualified products and improve the reliability of the products. The packaging and storage stages are to pack the aging qualified products according to the customer’s requirements, and store them in the standard warehouse with constant temperature and humidity, to ensure the quality of the products during storage and transportation. Yijian’s power supply for pc products have passed a number of international authoritative certifications such as UL, EAC, FCC, CE, CCC and RoHS, as well as more than 100 patents and certificates, which fully demonstrates the company’s strong technical strength and excellent product quality in the field of power supply for pc. The company will continue to increase the R&D investment, continuously innovate and upgrade the product design and manufacturing technology, and strive to provide more high-quality, high-performance and high-reliability power supply for pc products for global customers. For customers who want to know more about the technical parameters, design solutions and manufacturing processes of Yijian’s power supply for pc products, please feel free to contact our professional R&D and technical team for detailed consultation, and we will provide you with the most professional and comprehensive technical support and services.