Yint Electronics Offers 48V Common Protection Scheme Solutions for 5G Communication Power Supply

PublishTime： 2023-12-27 Article Source：Yint News

The fifth generation mobile communication technology is a new generation of broadband mobile communication technology with high speed, low latency, and large connection characteristics. It is the network infrastructure that realizes the interconnection of humans, machines, and things.

Characteristics Of 5G

Compared with existing 3G and 4G communications, 5G communications have the characteristics of ultra-high speed and extremely low latency. The reason for these characteristics is that 5G communication uses a higher frequency spectrum. Taking China as an example: the frequency band of 4G LTE is 1.8GHz-2.65GHz, while the currently announced frequency band of 5G is 3.3GHz-5GHz. In the future, millimeter wave (mmW) 5G communications higher than 6GHz will be built. The higher the frequency ν, the smaller the wavelength λ. For wireless communication, this means the smaller the coverage area of the communication signal. On the one hand, this requires a higher density of 5G communication base stations. On the other hand, a single communication base station is needed to solve problems such as small signal coverage area.

5G Power Supply Requirements

As the heart of the communication system, the reliability of the communication power supply determines the reliability of the entire system.

5G communications will see a large number of micro (small) base stations. If batch failures occur, the maintenance costs will be astonishingly high. To reduce maintenance costs, improving power supply reliability is the main requirement for 5G communication power supply. For outdoor power supplies, since they may be subject to lightning strikes, lightning strike and surge testing is very critical.

-48V Common Protection Scheme

Solution 1

① The device is used, the varistor is 14D820KH, the gas discharge tube is 2R090S-6*4.2, the TVS is SMCJ58CA, which meets the requirements of 1.2/50-8/20μs comprehensive wave CM/DM 6KV-3KA.

② Advantages of the solution: The protection level is relatively high, and devices can be flexibly replaced to achieve different protection levels.

③ Disadvantages of the solution: The devices used are relatively large and take up a lot of space, which is not conducive to miniaturization design.

Fig.1

Solution 2

① Device selection: If the protection level is not high, choose SMDJ58CA or 5.0SMDJ58CA. If the protection level is relatively high, Littel's AK10 series and plug-in products are more commonly used on the market, and YINT company's newly developed LSPD6 series and LSPD10 The series is a perfect replacement for the AK10 series is in SMD packaging, which is very conducive to automated production. Its parameters are as follows:

② Advantages of the solution: fewer components are used, small space is occupied, and no decoupling inductor is needed.

③ Disadvantages of the solution: Slightly higher cost Mainly used in BBU power supply section.

Fig.2

Table.1

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