LED penetration accelerated "blue ocean" lighting program upgrade

Talking about the prospect of application of LED in the special field of automobile manufacturers, said the vehicle demand is an important motive to drive the development of automotive electronics, we still need to strengthen the supply chain between the various manufacturers of cooperation, including automobile manufacturers, automotive lighting manufacturers, product suppliers, such as LED, we discuss and develop suitable for the future demand for automotive lighting products LED. Specifically, on the one hand, LED manufacturers can promote the products through LED technology for vehicle plant design and development departments, enhance the whole plant to LED products as well as the future development trend of understanding, in order to design and develop the next generation platform to make full use of LED in the field of automotive lighting to achieve reform. On the other hand, LED manufacturers should further understand the demand for LED lighting products, and the whole vehicle factory, lighting module manufacturers to define the specifications of the product, to improve the product development roadmap. At the same time, cost-effective system solutions, more concise and reliable reference design, as well as a more responsive application team, will be LED products in the automotive industry to promote a wide range of applications. For the LED driver circuit part, Lv Hao believes that the introduction of high power LED will gradually make the DC-DC LED driver has become a must, LED driver chip will gradually achieve multiple integration and intelligent control. This is because with the wide application of LED, the headlights group LED integrated will need a more compact and effective drive LED driver module, on a board including driving distance light (multi LED), fog lights, turn lights, and lights on for a plurality of LED light sources, the entire module to realize the communication by CAN or LIN agreement with the body control unit, can be carried out more complex control and diagnosis. In terms of intelligence, you can optimize the algorithm of the LED headlamp headlamp LED control, to achieve a variety of intelligent headlamp required light intensity, light and light angle control. It is understood that, in order to meet the needs of the front headlight trend of LED application, NXP is working with the international first-line car factory and lamp tier suppliers together to define develop next generation multi vehicle LED driving scheme, the scheme of the application circuit has two levels, the former is multiphase boost circuit, the battery voltage increases to provide after class stable power supply. The second stage is a multi way buck circuit, each of which is independent. Before and after the control chip level separately, before and after class buck boost a series of products can drive different phase number and the number of outputs. Through the different combinations of the front and rear stages, we can easily realize the integration of LED drivers from 2 to 8 or more. The full range of chips can be connected to the MCU on the driver board through the SPI interface, the system efficiency is greater than 90%, and the maximum single drive current can reach 1.5A or more.