Hopes on the green, led lighting has become a hot focus of the market, many lighting manufacturers flocked into the room. But LED lights market is not mature, from a global market perspective, CFL stronger growth in energy-saving lamps. At the recent Hong Kong International Lighting Fair, NXP Semiconductor Lighting Rong Chen, senior manager of product marketing, said the LED lights to make very flexible, which is equivalent to rely on their weaknesses to replace the traditional LED lighting, so should the use of innovative LED lighting , rather than put it into the lamp and the lamp, and so the market potential is not large, are short-term market, it is used to make the most suitable LED intelligent lighting. CFL driving the current market than expected, so NXP believes, CFL market in the future will continue to perform strongly.
LED light efficiency is essential to enhance
LED lamp heat become a focal point. Chen Rong view, the real effective way is to directly enhance the LED light effect, rather than focusing on improvement in the thermal, it is very effective, and no need to. Because the LED with the process improvement, the light efficiency can be every 20 months to double this and similar semiconductor industry Moore's Law.
Of more than 400W for the high-power lighting solution, based on efficiency and cost considerations, the use of harmonic drive to become the consensus of the industry. In 250W low-power lighting in the area below, usually a buck and flyback driver form. Buck-driven program, small size, high cost and poor security; flyback is high security, but the large size and high cost. For the U.S., Japan, the use of low-voltage electricity in the countries and regions, because the pressure from 110V to 60V small, so relatively easy to implement in these areas, LED lights. In addition, the Japanese government subsidies for LED lights is 50%, next year, LED lights will gradually become the mainstream in Japan. In China and European countries adopt appropriate for a flyback driver, but the LED lights in this performance under input voltage has been difficult.
In addition, in order to reduce the ripple, to extend LED lamp life, the market-driven programs are in place the input or output of electrolytic capacitors. However, the industry was that the performance of electrolytic capacitors will become the bottleneck of LED lighting, semiconductor manufacturers have therefore launched a program of non-electrolytic capacitor. But Chen Rong stressed LED driving solution electrolytic capacitors are not the bottleneck. Just choose good quality electrolytic capacitors and circuit set by such problems can be avoided, and he sees no electrolytic capacitors programs are not mature enough, there are obvious EMC problems, while non-electrolytic capacitors to pass the standard test program also takes some time consuming .
According to reports, from the end of 10 years in May, NXP shipped 1,000 million SSL2101 driver Chips. The SSL2102 in the International Lighting Fair in Las Vegas awards for technical innovation. NXP chip based LED Bulbs dimmable there are dozens of manufacturers are doing. Hong Kong International Lighting Fair, NXP demonstrated a program of LED lights dimming and digital dimming schemes, the program uses the old-fashioned analog dimmers, which is aimed at home users do not need to re-decoration, you can LED lights with dimmer.
Rong Chen said, mainland China's LED lights the current market turmoil, we need a shuffling process.
Also in the street, how to locate the relationship between HID and LED lights, it is worth examining. Perspective from the system, HID lights and light effects used in the street is higher than the LED, HID lamps are also more suitable for lighting a higher position, such as stadium lighting. In the automotive headlamps, HID accounted for 20% market share in the future this number will increase, while the LED current is mainly been applied in the automotive taillights.
NXP will focus on the wars in CFL
It is understood, NXP chip front-end lighting manufacturer in the Netherlands, the back-end packaging and testing in Suzhou. NXP in the following high-quality energy-saving 25W lamp driver chips dominant market share, its shipments of 6 million for the CFL driver chip market, because most of the world production of Lighting products in China, of which 4 million are sold in China. Therefore, NXP for the lighting market with a 10 chip deSign engineers and 10 application development engineers. According to reports, the UBA2211 is by the Chinese design team developed for the Chinese market, "Dragon" chip.
In general, the lamp life tests by the continuous light can get some time to determine the survival rate. But in practice, 90% of the old energy-saving light bulb life of the product, subject to rapid clearance. The light bulb is about 6,000 times the actual switch is not lit, but the lamp but it is still good, the appearance of dark parts of the filament, the filament is only because of wear and tear in the switching process is broken. We know that when the lights in the light electrons from the filament of light, while the filament power to gradually change from light emitting process and continuous loss of atoms. The bright features NXP chip delivers faster, shorten the lamp start time, warm light bulbs can reduce the filament loss. NXP chip, so the application of new energy-saving lamps, switches can Support more than 30 million times, making 2-3 times the lamp life expectancy. In the dimming products, said the driver using the NXP chip, a super energy-saving lamps will be available, the product dimmable to 1%.
The new EU standards by 2013 from 2009, switching frequency of 1 million and 50% of the 6,000 hours of light survival rate, upgrade to 3 million and 70%. Industry speculation that the next new national standard should be closer to EU standards, the new standard than the EU reference value.
