1, switching power supply module is suitable for their own scale requirements: some foreign brands are really good quality, such as VICOR, INTERPOINT, etc., but the price is not acceptable to every user, and the delivery date is very long compared to domestic brands. . For some of the larger power module suppliers in China, this problem is also a problem. If the model you ordered is not the main shipping model, the delivery date is not guaranteed. If you propose to customize a special power supply, it is simply unimaginable for small and medium-sized customers. Because small and medium-sized enterprises, it is impossible to choose a supply platform like Huawei ZTE, and it is very important to choose a company that is suitable for its own scale. Companies like Tesla Power supply, which provide power solutions for small and medium-sized businesses, provide customized services.
2. Look at the product line of the switching power supply module: If the module power supply can provide industrial products like half brick, 1/4 brick, 1/8 brick, 1/16 brick, if it cannot be provided, it indicates the strength and scale of the company's research and development. It is not big. The ability to customize products, whether it can provide a wealth of customized products, such as railway, power, military customization experience is still very important.
3. Communicate with the company's FAE engineers to understand the company's implementation design standards and design processes. Such as the company's product reliability design standards, derating standards, electrical safety standards, EMC standards. Module new product design is a very rigorous process, a company that promises you can deliver a new product in a week is definitely a non-rigorous company, design details are very important, such as small overshoot and drop when power is established, feedback The stability of the network under extreme conditions, these big companies are doing very well, and few companies will pay attention to these design details.
4, look at the switch power supply module materials: open a module power supply, self-view, more than listening to others say more useful. From the materials used in power products, it can be seen that the quality and positioning of this power supply manufacturer, like power supply materials, such as capacitors, MOSFETs, diodes and other key materials, can determine this is the power quality. First-line manufacturers like DCDC module power supply, large-capacity MLCC capacitors are basically TDK, Murata, Guoju and other brands, such as VISHAY, KEMET, AVX, etc., MOSFETs are generally IR, VISHAY, ST, Renesas and so on. The two-pole selection is such as ONSEMI, ST, IR, Infineon and so on. A device that is very important for power supply.
5, look at the switching power supply module product certification, certification not only test the company's technology, but also the company's strength. Because the cost of certification is not low, and it is not regularly audited, so small companies basically do not have any certification. In all certifications, the standards basically adopted are basically the same, such as EN60950. However, the amount of gold in each certification body is different. Like 3C, TUV, etc., the ratio is easier and the cost is lower. Like UL certification is still very strict, the audit is also diligent and costly, so it is very important to see if a company has UL certification.