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What does the driver power supply manufacturer say about the function?

2022-10-26

Driver power supply manufacturers said that especially the ability to resist reverse voltage. It is also important to strengthen this protection. Some LED lights are installed outdoors, such as LED street lights. Due to the startup of the grid load and the induction of lightning strikes, various surges will invade from the grid system, some of which will cause damage to the LED. Therefore, the LED driver power supply must have the ability to suppress surge intrusion and protect the LED from damage. In addition to the conventional protection function of the power supply, the protection function relatively increases the negative feedback of the LED temperature in the constant current output to prevent the LED temperature from being too high. The driver power supply manufacturer said that in terms of protection, the lamp is externally installed. The power supply structure should be waterproof and moisture-proof, and the shell should be sunlight-resistant. The driver power supply manufacturer said that the life of the driver power supply should be compatible with the life of the LED. Comply with safety regulations and electromagnetic compatibility requirements. The driver power supply manufacturer said that with the increasing application of LEDs, the performance of LED driver power supplies will become more and more suitable for the requirements of LEDs. The main current loop PCB should be as short as possible. The fastest way is to look at the works of large manufacturers. Optimize the transformer parameter design to reduce the eddy current loss caused by ringing. This is more difficult. First of all, you must master the basic knowledge of electromagnetism and design a reasonable transformer. The important thing is patience. Even if you want to increase the efficiency by 0.5%, you should try it. Reasonable selection of switching devices. This is a balance between cost and performance. What kind of requirements do customers have and what kind of equipment are used, but it must be reasonable. This part is more delicate, mainly experience. The power supply manufacturer said that when customers put forward efficiency requirements, it is necessary to evaluate what kind of topology to choose. Many people ignore this point when choosing a good electrolytic capacitor. The loss of electrolysis is very large. The power supply manufacturer said that under the premise of designing the power consumption of the startup part to be efficient, it must be taken into account that many chips have HV startup pins, and the startup current is getting lower and lower.

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