led light

Led Light general lighting has just started, the market demand is still the mainstream of CFL lamps

Currently out of incandescent lamps is no longer the future, but for the time, laws have been disabLed Light this year, incandescent in Argentina, Australia, New Zealand, France, Italy and the Philippines into effect next year in the UK, Finland and the Netherlands entered into force, the year after the entered into force in Japan and Canada, entered into force in the United States in 2014, the world will be the last of China entered into force in 2017, which is why CFL energy saving lamps, a rapidly rising market demand, the main reason for CFL energy-saving incandescent lamp is a the best alternative, not only the price closest to incandescent light, and life and energy efficiency far more than incandescent, a 13W CFL energy saving light efficiency of the equivalent of a 60W incandescent lamp, four-fifths of lower power consumption, life expectancy increased 8-15 times.
The total current global demand for lighting is about 100 million, of which nearly one third (3000000000) is the CFL energy saving lamp. NXP Semiconductor Lighting Rong Chen, senior manager of product marketing, said: "The next 3 years, CFL energy saving lamp market will be the rapid development pace of development will be flat down after 5 years will be gradually reduced market demand. Led Light lamps cost barriers still exist, but The cost of Led Light light rapid decline, the market is currently in beta, is expected to Led Light lamps will be accounted for in the next 5-10 years, the mainstream general illumination market. "
Datapoint Research market research company in June this year, a report released to show, from 2007 to 2013, the incandescent lamp was a rapid decline in the market is trend, CFL market is strong rise in energy-saving lamps, Led Light lighting is in the ascendant state.
CFL lamps driven solutions currently mostly provided by NXP. "NXP's global annual sales of CFL more than 6 million drives, including a ten million sold in the Chinese market, now more than 20 customers worldwide in the use of NXP's CFL driven solution." Chen Rong said, "has been able to achieve such market leadership is due to NXP has a unique high-pressure process, it allows us to be able to control, MOSFET, and MOSFET driver integrated circuit with a Die, the other suppliers are usually required two Die, then packaged in a chip, Therefore, we can do a lower cost, which for cost-sensitive market, CFL lighting is essential. "
CFL energy saving lamp market is currently the main problems are: CFL lamps uneven quality, CFL bulbs need a long-time warm-up to the highest brightness, with the existing TRIAC dimmers are not compatible.
Now many consumers complain that CFL lamps take home did not take much black or bright. The basic quality issues from the current CFL lamps EU standard: the standard CFL lamps of 50% pass rate, because the EU is a major manufacturer of CFL lamps target market, their rate of qualified products depends largely on the EU market requirements. Qualified CFL lamp life is 6000 hours (almost 6 years), but only 50% pass rate, so nearly half of home users to buy CFL lighting is substandard, its life may be only a few hundred hours.
This problem may be to improve until 2013, because the new EU standards for CFL lamps will be implemented in 2013. New standards will increase to 70% pass rate, which means that after 2013 unqualified products consumers buy CFL lamps will be much lower probability.
CFL lamps new standard will greatly increase the switching frequency of 3 times, from 2009 to 1 million to 3 million by 2013. CFL lamps when the required number of switching times, the filament will turn black, this lamp can not be used. Increase the number of life of filament switch is turn on the switch before each preheat the filament, but this method only the driver IC based program can be achieved, the existing program based on discrete components of the drive can not do this.
In this year's Hong Kong International Lighting Fair, NXP showcased its latest UBA2211 based drive 13W CFL driven embedded solution, its efficiency can be 90-92%. With the current mainstream of the market compared to discrete solutions, based on driver IC for CFL programs can reduce the number of peripheral components to a dozen, only a very small PCB board can be done and is very simple, cost will only increase a few dollars money, but also bring a lot of performance improvements.
For example, Chen Rong said, NXP drive power based on UBA2211 the CFL program could solve the following problems: CFL lamp life may be extended 50-150%, switching frequency can be increased by 3 times to 30 times, product consistency can significantly increase the photoelectric conversion 2-5% efficiency can be improved, reducing the size of lamps, dimming the depth of support for efficient and shorten the lamp start-up time, reduce product development and labor costs, and the constant output power (lower input voltage dependent).
And the Led Light drive power program is different, CFL drive power program to eliminate EMI without the use of specialized components, which can be used two small ceramic capacitors to achieve this functionality. In addition, the required power input circuit electrolytic capacitors (mainly used to eliminate the ripple current) drive power will not affect the life of CFL, CFL is because the radiation source, ambient temperature electrolytic capacitors do not like the Led Light drive power as Up to a hundred degrees, so it's working life would not be much impact, most people can achieve more than 6 thousand hours working life.
Chen Rong said: "Nowadays, only about 2% of high-quality CFL lamps in the driver IC based solution, we hope that the future of the CFL lamps have more embedded IC manufacturers drive adoption programs."
However, for many CFL lamps or drive power developers, the use of IC-driven programs are also some practical difficulties. For example, Shenzhen Optoelectronic Technology Co., Ltd Hang Yiu He Qihui minister, said: "We are both produced by discrete CFL drive power, there are IC type. IC-based solution does have a lot of performance advantages, is the future the mainstream of development, but for us to achieve some technological issues, such as the current drive power all the CFL wave soldering PCB boards are used (due to cost considerations), these plants are not placement machine, so the need for workers way by hand to the PCB board mounted IC, and this will bring about the end result of ESD issues such as drive power reliability problems. "
CFL on the market today drivers can not support most of a wide dimming depth, so the market can not support all of the TRIAC dimmer. Chen Rong said: "We have now developed to support all market TRIAC dimmer CFL driver chips, it's the depth of up to 1% dimming, but this chip officially released until next year."

Led Light lighting: strategic investment direction
Led Light solid-state lighting is now widely regarded as the preferred long-term energy efficient lighting solutions, and its performance is expected to reach 10 times that of incandescent lamp. Present mainly in the use of Led Light architectural lighting, decorative lighting and effect lighting, and traffic signals and street lighting and other special applications.
In order to jump for indoor lighting Led Light lighting mainstream technology, the industry is the brightness, efficiency, cost, and so light failure and further efforts are expected in the near future will be able to make significant progress.
CFL lighting in order to sustain their leadership position on the market, NXP is also the past few years for the 5-year boom in emerging markets will make the necessary strategic investments. Has developed the following for 10W Led Light lamp drive for SSL2101 driver chips and 10W-25W range of Led Light driver IC SSL2102, SSL2102 support the TRIAC dimmer.
Chen Rong said, "NXP's Led Light driver solution SSL2101/2102 since May 2009 has been released, has sold more than 1 million pieces, very popular with the market welcomed, they are also the only to reach the market life of a standard Led Light Led Light Driver IC (life of over 70,005 thousands of hours), and in May this year, the International Lighting Show in Las Vegas for technical innovation award. "
He said that next year we will also introduce support for external MOSFET's Led Light driver chips SSL2103, it can drive more power, such as 25W-100W.
Led Light general lighting market currently affecting the two big main problem is: Led Light lamps are too expensive, Led Light drive power lifetime low. 13W of Led Light bulbs need a 250 yuan or so, and a first-class brand of 13W CFL energy saving lamps is only 20 yuan, second-rate brand of 13W CFL lamp may only 15 yuan.
Led Light lighting is too expensive for two reasons: First, the cost of high-brightness Led Light light source is too high, and second, Led Light high cost of cooling the metal shell.
The good news is the cost of high-brightness Led Light light sources are in rapid decline every year. Chen Rong, said: "The current cost of Led Light light sources are in rapid decline in the rate of 40%." Cree vice president and general manager of China Shi Yucan also said: "High Brightness Led Light's cost is now 25% of the rate of fall down. "
3W Led Light light bulb above the metal cooling housing to heat, the greater the power, need more metal, the higher the cost. Therefore, Chen Rong said: "solve the bottleneck of the future of Led Light lighting, cooling only the final solution is to improve the light efficiency, to reduce the Led Light power. Another solution is to source from a point source to surface, so that each point on the Led Light power without large, which can effectively eliminate the heat problem. In this sense, Led Light lamp may be just a transitional product. "
Led Light drive power is an important reason for the low life expectancy is the drive power required for less than the life of aluminum electrolytic capacitors, mainly due to working long hours and Led Light lamps inside the ambient temperature is high, resulting in aluminum electrolytic capacitors to be consumed quickly dry, much shorter life span, generally only 5 thousand hours of work. The Led Light light source life is 50,000 hours, so the working life of aluminum electrolytic capacitors becomes short life Led Light drive power rib.
Now some suppliers in order to solve this problem, invented the non-electrolytic capacitor of the Led Light drive power program. But not all of the Led Light drive power suppliers in favor of this practice. Chen Rong said: "The current production of Led Light lighting drive power is not a non-electrolytic capacitor using the driving program, because without it, then pass a lot of test standards, such as EMI testing and flicker testing."
The use of Led Light drive power electrolytic capacitors are usually more easily test the program, if replaced film capacitors and ceramic capacitors or tantalum capacitors, situation? Film capacitors to achieve the same capacity (usually 100-220uF), the volume will be great, but the cost is too high, the general capacity of small ceramic capacitors, ceramic capacitors such as the use of such a large number of capacity, footprint and the costs are too great to have such a large tantalum capacitor capacity, one is too expensive, but mainly the pressure is too low, so replaced by any other type of capacitor, basically not too big, is too expensive, If the capacity for these shortcomings into smaller capacitors, to eliminate the ripple effect was not so good, many export products for the rigorous certification testing indicators can not be passed, the current Led Light drive power or high-quality aluminum electrolytic capacitors commonly used .
Optoelectronics Technology Co., Ltd. Shenzhen Heng Yao He Qihui Technology Department, said: "Many suppliers claim the non-electrolytic capacitors Led Light drive power program, it may be just removed the AC input electrolytic capacitor, electrolytic capacitor constant current output should be difficult to remove or replace. "
At the Hong Kong International Lighting Fair, NXP has unveiLed Light a TRIAC dimmer can be embedded a 13W Led Light lamp driver power, this power scheme based on the driving SSL2102 aluminum electrolytic capacitor used. When I asked about the working life of the bulb, Chen Rong said: "The problem of the working life of electrolytic capacitors will certainly affect the life of the Led Light light bulb, but can take some physical ways to alleviate this problem, such as the aluminum electrolytic capacitor located near the tail lights on the PCB, in general, closest to the Led Light light source of the highest temperature can reach 100-200 ℃, followed by cooling metal parts, usually about 100 ℃, the lowest part of the tail lights, usually about 70 ℃, So long as attention to the aluminum electrolytic capacitor located near the tail lights, its life will not decay too hard. Our experiments show that it can reach 10,000 hours life span is about the equivalent of 10 years duration of use, which for the average family users, ten years to change a light bulb Led Light is basically acceptable. "
Led Light drive power from the structure, Chen Rong said Japan and the United States will be non-isolated solutions for the mainstream because their power input voltage is only 110V. China and Europe will be isolated solution for the mainstream because of their power input voltage up to 220V, isolate and secure the safety of the program, although some of the cost may be high.