SCR dimming technology innovation to achieve excellent LED lighting
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Dimming is a very important technique for light sources. Because it can not only provide a comfortable lighting environment, but also achieve energy saving and emission reduction. With the rapid growth of the LED application market, the application range of LED products will continue to grow. LED products must meet the needs of different application environments, so LED brightness control is also necessary.
Although LED lamps that are not dimmable still have their market. But the use of LED dimming technology can not only improve the contrast, but also reduce power consumption. Therefore, the development of LED dimming technology is an inevitable trend. If the LED wants to achieve dimming, its power supply must be able to have a variable phase angle output of the thyristor controller to unidirectionally adjust the constant current flowing to the LED. It is very difficult to do this while maintaining the dimmer's normal operation, often resulting in poor performance. Problems such as flickering, uneven lighting, etc.
Faced with the problems of LED dimming, all major companies in the industry are gradually researching high-quality LED dimming technology and solutions. As the world's leading semiconductor manufacturer, Marvell has launched its solution for LED dimming. The solution is based on the 88EM8183 and is designed for off-line dimmable LED lighting applications with a minimum of 1 deep dimming. The 88EM8183 uses a unique primary-side current control mechanism to achieve extremely tight output current rectification over a wide range of AC input ranges. In order to better promote this new product, Marvell will participate in the 7th LED General Lighting Drive Technology Seminar hosted by Big Bit Information in Ningbo on May 31, when Marvell senior engineer Wu Wei will make Marvell thyristor The presentation of the Light Plan-88EM8183 Introduction Application introduces this LED lighting dimming solution for all participants. The seminar was hosted by the Big Bit Information Institute, hosted by the Semiconductor Device Application Network, and co-organized by the Ningbo Lighting Industry Association.
LED lighting has become a mainstream technology. LED flashlights, traffic lights and lights are everywhere, and countries are pushing to replace incandescent and fluorescent lights in residential, commercial and industrial applications powered by mains with LED lights. However, if LED lighting is to replace incandescent lamps as the main body of lighting, thyristor dimming LED technology will be an important factor.