Mainland LED lighting will completely solve the price problem in order to popularize the application?

Push LED lighting for many years due to the high cost, have been used in medical and hotel needs 24 hours of local lighting and street lighting for long time in the field, other areas due to price reasons have not been able to scale into the. However, the next two years may be a turning point.

2012 LED lighting price is very fast, which makes LED lighting is rapidly entering various applications. "In the autumn of 2012 in Hongkong Lighting Fair on the occasion, NXP semiconductors (NXP) lighting products in Greater China Marketing Director Wang Yongbin said," and we found a new trend, love is non dimming LED lighting products are developed, including Asian, South Korea and other countries also favored non dimming the product, which may be related to the use of habits. Europe and the United States prefer light dimming. "This is a good news for the LED industry, because of the present situation, the price of non dimming IC adjustable light IC cheap about half, while IC is still the LED lamps accounted for the most important part of the cost. Wang Yongbin added: "we found another trend is in the continued LED ball gun and lamp series, the next year, LED lamps will become the mainstream demand. So, the next year, NXP and other LED semiconductor program providers will focus on non dimming and high-power lighting market, because of the huge growth potential in asia.

In addition to the above trend, Wang Yongbin also revealed that the current lighting manufacturers for the power factor is high, because many countries including Chinese, some special requirements of lighting FP is greater than 0.9, and the standard products of subsidies. For example, in China's energy saving project bidding, the FP is greater than 0.9 of the product plus two points, and the Chinese government will also be given a post. In the European energy star is also required, when the power is greater than 25W lighting, FP must be greater than 0.9. "He pointed out that some IC vendors need to plan, from the outside to control the realization of high power factor, this will increase the cost of NXP can be achieved from the chip, not only easy to design, and also reduces the cost of. For example, SSL2109A controller, due to the use of a dedicated circuit, you can achieve FP greater than 0.9, less peripheral, simple and convenient design. "For example," he said.

The same is for another integrated high voltage MOSFET dimming of the products of series SSL21081 (A) /83 (A), high integration degree, less peripheral elements need only 14, lower overall cost, and the integration of MOSFET, the efficiency can reach more than 95%. However, the current program can only do more than 0.7 FP. "SSL21081 (A) /83 (A) output efficiency can achieve 5% and 95% of the current control precision, complete function and built-in protection features flexible and reliable, to ensure that the system components of the lowest cost, by Asian users welcome, the next two years will be the main product. He explained that not all IC companies can be integrated into the high voltage MOSFET controller, NXP due to high voltage SOI insulation technology, can achieve a good heat dissipation, which integrates high voltage MOSFET to achieve efficient lighting. For some companies integrated 750V MOSFET, and NXP only integrated 600V MOSFET, Wang Yongbin explained that from the current and the near future, the integration of 600VMOSFET is enough, more than a waste and cost increases.

In the year after next will become the mainstream of the market of high power LED lamps, the NXP Hongkong show severe launched SSL4120, which is a correction factor for success rate of a set of (PFC) GreenChip? Resonant controller, high power LED application can support up to 400W, currently has production, samples are forthcoming. SSL4120 fully supports power applications that support high efficiency directly from the rectified general purpose 90 to + 305 volt range. In addition, it supports lower than 10% of the total harmonic distortion (THD), higher than 0.97 of the high power factor (PF) and a typical PFC frequency of 380 kHz, and meet the traditional requirements of high-power LED lighting applications. SSL4120 can be widely used in high power LED applications, such as office lighting, shopping malls lighting, high shed and low canopy lighting, parking lighting, square lighting and street lighting.

For the current market on a single level and two LED driver architecture confrontation, Wang Yongbin said, NXP is a defender of the single level architecture. The main reasons are the following: one is NXP a long time in a single stage on accumulation and advantage; two is a single level controller integrated high voltage MOSFET tube; three single stage is easy to use, convenient design, customers need only two weeks can be successfully developed; four is currently the single stage has a cost advantage, double BOM than the single stage BOM expensive about 10-15%.

Finally, some manufacturers of lamps to do their own vertical integration of R & D drive IC/ components trend, Wang Yongbin believes that this is only a temporary phenomenon, will not become mainstream. Do the lighting company is still difficult to do electronic part of the future will be a professional division of labor, so that part of the drive will be independent. "Personally, he thinks.