Yang Qingxin: Focus on EMC issues in semiconductor lighting

China Semiconductor Lighting Network News "As far as I know, about 90% of the current products EMC (Note: electromagnetic compatibility) is not relevant, the current research on the effects of light and electric heating is more, but the EMC problem is rarely mentioned, I I think it is necessary to study this part." Yang Qingxin, president of Tianjin Industrial University, director of the International Electromagnetic Field Computing Society and chairman of the China Chapter, said recently.

Semiconductor lighting involves issues such as circuit integration and layout. Yang Qingxin said that at present, in a project he hosted, several LED bulbs are integrated into one chip, and the number of integrated bulbs and the distance between them are closely related to heat generation. The number of watts of the bulb is increased, and the number of series and parallel bulbs is increased. And the distance between the bulbs needs to be optimized. At the same time, in terms of thermal effect, based on the material of the pedestal of the entire lamp, heat dissipation performance and temperature also need to be calculated. In addition, Yang Qingxin pointed out that there are driving circuits in LED lighting applications. If electromagnetic compatibility is not enough, it is easy to be disturbed. For example, when thunder and rain, it may be powered off, which will have an impact on lighting demand.

Yang Qingxin believes that if the relevant deep problems can be thoroughly studied, a series of problems will be solved, which will be very helpful to the development of the semiconductor lighting industry and will have a great supporting role. He hopes that people in the industry can cooperate with each other to make the semiconductor lighting industry develop better and faster, and contribute to the application of semiconductor lighting industry for the development of China's low-carbon economy.

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