With environmental protection issues and the energy crisis getting more and more attention, many alternative energy solutions have come out. Any product that meets the characteristics of environmental protection, power saving, energy saving, etc. has become the new darling of today, and therefore, it has multiple application markets and is in line with The environmentally-friendly and energy-saving LEDs are also logically transformed into a bright star in the electronics industry.
Wu Zhimin, marketing manager for power management products in the Asia Pacific region of the US National Semiconductor (NS), said that since the beginning of 1970, LEDs have only 2-3 lumens (lm) illumination and 30mA current, and 4-8 lumens in 1992. Illuminance and current of 70mA, and even progress to the illuminance of 20-40 lumens and current of 350mA in 1997, it is easy to see that the development of LED has gradually become the main illumination of high illumination from the original low illumination auxiliary illumination. The trend is also the future market trend of high-brightness LEDs.
He also pointed out that from today's 40 lumens / watt, it is estimated that by 200 liters / watt technology by 2020, high-brightness LED replacement of traditional lighting is just around the corner, and under the annual cost reduction of 15% Such development will be more rapid. From the earliest red light to the white LED technology of red, green and blue (RGB) three-color mix and match, it can be seen that this evolution history is the biggest revolution since Edison invented the light bulb.
The illumination of a 150-watt incandescent lamp can be replaced by a 12-watt LED lamp. In terms of power, LED lamps can save 80-90% of electricity compared to incandescent lamps. As for life, incandescent lamps average. It can be used for 1000 hours, but the LED lamp can be used for more than 50,000 hours. In terms of overall cost performance, the LED lamp can be said to be far ahead of other traditional light sources.
In addition, LED lights do not need to be warm-up, and the characteristics of quick start are important advantages for the need for high safety, such as brake lights for high-speed vehicles. Therefore, from the past, it has only been used in the use of signal signs, and nowadays, multiple applications such as automotive, backlight, general lighting, flashlights and portable devices... The LED market is gradually expanding, and it is also facing high voltage and high integration. Work hard.
According to the Strategies Unlimited survey, there were a total of $205 million in high-brightness LED applications in the world in 2006, but by 2011 it will grow to $1 billion, with a compound annual growth rate (CAGR) of 36.9%. In addition, In the automotive market, the overall market in 2009 will also reach 800 million US dollars of business opportunities, all indications that the high-brightness LED market has become a part of the ring.
Wu Zhimin said that NS sees such a business opportunity, whether in series or parallel, boost or buck, there are a series of overall solutions. In addition, NS also provides online development tools, from inputting design information to selecting LED drivers. The establishment of BOM, optimization efficiency, online simulation verification, and even output reference design are the most effective tools for engineers in the development process. Therefore, in addition to the power management solution, NS will also be A range of reference designs provide engineers with the best solution.
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