Integrating trends to see how the light engine reconstructs the industry value chain?
[Text / Gaogong LED Ganqin] The light engine was first launched by international lighting companies such as Philips and Osram, and was established in 2010 by the Zhaga International Alliance, an LED industry cooperation organization, which aims to promote the standardization of lighting products and realize different Interchangeability of manufacturers' LED light source products.
With the increasing competition in all aspects of the domestic LED industry chain, light engine products with both low cost and high cost performance are increasingly favored by enterprises.
Linear drive IC demand increases
In order to ensure the conversion efficiency of LED lamps and the life of lamps, the driving power of LED lighting lamps has high PF and low THD as basic requirements. The high-voltage linear constant current driver chip has become the industry's first choice because of its simple and efficient application circuit and low application cost.
Yan Chongguang, a part-time researcher at the Shanghai Institute of Microelectronics, Peking University, said, "LED lighting power supplies introduce high-voltage linear constant current to drive a new generation of power supply technology. Because of the switching of the power supply, the ripple can be greatly reduced. In addition, the application circuit has no transformer and other magnetic components. And electrolytic capacitors, thus increasing the PF of the linear power supply and reducing the THD."
Therefore, the biggest advantage of the light engine is the matching with the linear driver IC. The general manager of the disc integration, Chen Hengyu, introduced the fourth-generation high-order piecewise linear constant current driver chip SDS3108 series, which inherits the piecewise linear constant current. Based on the inherent advantages of the chip, the power supply specifications are raised to the level of the switching power supply, and the problem of low frequency strobe and low wick utilization is completely overcome.
“This product provides a true de-energization solution for LED luminaires, especially high-order piecewise linear constant current drive, which closely follows the current sine wave and greatly improves efficiency. At present, the efficiency of SDS3108 has reached more than 95%.†Chen Hengyu said.
According to He Gang, deputy general manager of Meiya Optoelectronics, the company's independent research and development of integrated photoelectric engine, using multi-core packaging technology, coupled with high-efficiency high-voltage linear constant current driver chip, to achieve a new generation of photoelectric LED modules to optimize cost and performance, to meet Zhaga The Alliance aims to develop a standard interface interface for LED light engines, and can be easily combined with various lamp housings, lampshades, and lamp holders to form a variety of LED bulbs, downlights, fluorescent lamps, ceiling lamps, and the like.
“We effectively integrated the high-voltage LED lamp bead and the high-voltage linear driver IC. The surface is attached to the aluminum substrate and connected to the AC110/220V power supply. This further reduces the processing cost and labor cost of the lamp factory and greatly shortens the time. Product production cycle.†He Gang said that the light engine product is only one radiator shell away from the finished lamp, and the customer can complete the assembly of a single LED lamp in half a minute.
Enhance the value chain to help intelligent development
Xiao Guowei, chairman of Jingke Electronics, said: "The LED lighting industry has developed to the present, the two driving forces of cost reduction and efficiency improvement will make the value chain of the whole industry more reflected. The LED industry should form integrated epitaxial chips and package integration models. Group or light engine supplier."
In general, in order to assemble products, traditional LED downstream lamp manufacturers often purchase components such as lamp beads, driving power supplies, and aluminum substrates, which are not only expensive to manufacture, but also have more or less compatibility stability between devices of various manufacturers. problem.
The light engine integrates the lamp bead, aluminum substrate and drive power into a module, which can effectively solve these problems once it is delivered in volume.
Xiao Guowei also said that the light engine promotes the assembly of LED light sources and lamps at the low end of the value chain, reducing costs and saving design space. More importantly, this technology can truly highlight the intelligent design of LED lamps and the value of lighting brands. â€
The industry believes that intelligent lighting is only a small area of ​​the Internet of Things era, the integration of smart home is the general direction of the future, and the birth of light engine technology is also in line with this development trend.
Xinqiang Light Source CEO Zhang Qiang takes a smartphone example: The current smartphone is actually an integration, that is, the camera, the recorder, the camera, and the functions that were previously needed by other devices. The light engine is a product similar to a smart phone. In the future, it can integrate more intelligent systems to help the development of intelligent lighting.
Zhang Qiang said, "The LED industry chain is developing in the direction of integration. In the future, if we can integrate the light engine into more systematic information, including intelligence, sensing, dimming and other functions, integrate it into the light engine. In a carrier, a new leap in technology will be realized by then, and this is also the direction of development of the light engine."
Zhang Qiang introduced that Xinli Light Source Light Engine products use the first AC-LED technology in the country and solve the problem of AC stroboscopic flash through phosphors. In the future, Xinli Light Source hopes that the technology can go to intelligent application fields.
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