What aspects should be paid attention to when choosing a custom power module manufacturer?

The power module is a power supply that can be directly mounted on a printed circuit board. Its characteristics are that it can be an application-specific integrated circuit (ASIC), digital signal processor (DSP), microprocessor, memory, field programmable gate array (FPGA) ) And other digital or analog loads to provide power. Judging from the current environment, there are a wide variety of power modules, which not only enriches the market, but also gives manufacturers more choices, but at the same time it also causes certain problems for purchasers. How to choose a product that suits you at a better price in a mixed environment, and how to choose the right product according to the actual needs of the purchaserPower module customizationfactory?

1. It is suitable for the requirements of one's own scale. Some foreign brands are indeed of good quality, such as VICOR, INTERPOINT, etc., but the price is not acceptable to every user, and the delivery time is very long compared to domestic brands. For some large domestic power supply module suppliers, this problem is also encountered. If the model you ordered is not the main shipping model, the delivery time cannot be guaranteed. If you propose to customize a special power supply yourself, it is simply unthinkable for small and medium customers. Because small and medium-sized enterprises cannot choose a supply platform like Huawei and ZTE. It is very important to choose an enterprise that suits their own scale. Companies like Mona provide power solutions and customized services for large and small businesses.

2. Look at the product line. For example, whether the module power supply can provide industrial products such as half brick, 1/4 brick, 1/8 brick, and 1/16 brick. If not, it indicates that the R&D strength and scale of the enterprise are not large. The ability to customize products, whether it can provide a wealth of customized products, such as railway, electric power, and military customization experience is still quite important.

3. Communicate with the company's FAE engineer to understand the company's implementation of design standards and design processes. Like the company’s product reliability design standards, derating standards, electrical safety standards, EMC standards, etc. Module new product design is a very rigorous process. A company that can promise you to deliver a new product within a week is definitely a non-rigorous company. The design details are very important, such as small overshoots and drops when power is established, feedback The stability of the network under extreme conditions, these large companies have done very well, and few small companies will pay attention to these design details.

4. Look at the materials used. Turn on the power of a module and take a look at it yourself. It's more useful than listening to others. From the materials used in the power supply products, we can see the quality and positioning of the power supply manufacturer, such as the selection of power supply materials, such as capacitors, MOSFETs, diodes and other key materials, which can determine the quality of the power supply. First-tier manufacturers like DCDC module power supply, large-capacity MLCC capacitors are basically TDK, Murata, Taiyo Yuden and other brands, tantalum basically chooses VISHAY, KEMET, AVX, etc., MOSFETs are generally IR, VISHAY, ST, Renesas, etc. Two-pole options are ONSEMI, ST, IR, Infineon, etc. A very important device for power supply is the power supply benchmark. Generally, manufacturers choose TL431. This kind of device manufacturers are different, and the price difference is still very large. For example, TI’s products are much more expensive than domestic products or Taiwan, but TI is very advantageous in terms of reliability and temperature drift. TI's product line is divided into several grades according to accuracy and temperature, TL431AI, where A represents 1% accuracy, and I represents temperature grade. For example, C stands for 0-70 degree products, I stands for -40-85, and Q grades are -40-125 products. Not to mention small factories, they are some large domestic factories that use C grade products. There are not a few products in the I file. If you open the product, see if it is a TI product. If the third letter on its TL431 MARK is basically the temperature grade. Such as TAI, TAC and the like.