Just in 2011, the image of LED industry insiders is called “nostalgic LEDâ€. The Chinese LED market is in danger. The European and American manufacturers are the first to ring the warning of the revenue season. The giants are rushing to the Chinese LED lighting market. LED chips are stepping into the “quantity increaseâ€. The price drop "channel", the multi-"lightning collapse" triggered a chain reaction, the elimination of incandescent lamps "unveiled the veil", LED companies staged the year-end IPO listing tide. The price war and the quality war are mixed, and the between the upstream and the downstream are ambiguous, and the Red Sea is everywhere. Figure 1: Lance Zheng, senior manager of global technology marketing at Marvell, is optimistic about the LED lighting market in 2012. Unique DSP core + OTP depth dimming curve adjustment Figure 2: A19 LED Bulb Drive Solution. As shown in Figure 3, Marvell's full system reference design board requires only a total of 33 components, compared to more than 70 components currently on the market. The cost of this overall solution can be reduced by 30-40%. With the 88EM8183 driver, single-sided PCB can be done, and the reliability is naturally improved. In addition, the Marvell 88EM8183 achieves 85% efficiency compared to other companies' nearly 80% efficiency; it also offers a high PF of 0.95 and a THD of less than 20%. "Some power companies in the United States have subsidies for solutions with less than 20% harmonic distortion, and THD is small, which inevitably reduces the cost of purchase for end customers," he said. As long as your smartphone is USB – OTG compatible you can transfer
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Some insiders said that the 2011 LED inventory is too large, making the market in 2012 not as good as 2011. In this view, Lance Zheng, senior manager of global technology marketing at Marvell, has different opinions. "The domestic installed capacity is very large. This is the cause of overcapacity, but improving light efficiency will be a very good way to stimulate the development of the LED industry because of light. As soon as the efficiency is increased, the number of LEDs used will be small, so it can reduce costs and promote the development of the LED market. As for the whole industry should continue to grow in 2012, the highlight here is LED lighting.†He held a seminar at Shenzhen Yiweixun. The 2012 Industry and Technology Outlook Media Seminar was expressed as such.
2012 is the key year for the LED lighting market to take off
Lance pointed out that the entire lighting market grew by more than 40% in 2011. As countries began to phase out incandescent lamps this year, 2012 became a key year for the LED lighting market to take off. LED bulbs and lamps will grow very well, especially commercial lighting. Especially fast, growth will further accelerate in the future as LED chip prices and related component prices decline.
He pointed out that although the demand for LED bulbs in the Chinese market is not as large as that of Europe and the United States, the popularity may be slower for a few years, but one thing to note is that 70% of LED bulbs are manufactured in China, and their R&D capabilities are also very strong. Many are sold to countries such as Europe and the United States. . Therefore, China will play an important role in promoting the popularization of LED lighting to the mass market.
However, although the prospects are bright, the LED light source and the driving cost are still very high, so the price of the LED lamp is still relatively expensive, which is why the LED lighting has not been able to enter the mass market. In 2012, how will LED lighting manufacturers break through and enlighten the LED lighting in the mass market?
"The application of innovation to LED drivers to provide energy-efficient and high-quality light output at lower cost is the mission of Marvell." Lance said, "Marvell has many advanced LED driver technologies, and These LED driver chips are built on an analog-to-digital hybrid architecture. Marvell has the most advanced wireless communication technology that can be combined with LED lighting control to provide customers with a complete system design that helps Chinese manufacturers with the lowest BOM cost. Best performance advantages and fastest speed to promote LED lighting products." 
Marvell's new highly integrated 88EM8183 LED driver IC for the LED lighting market uses Marvell's unique mixed-signal architecture and advanced dimming control technology to deliver high-quality light output with dimming performance comparable to incandescent. Deep dimming down to 1% of LED current is smoothly achieved, compared to similar LED driver solutions that typically only achieve 10% to 20% dimming. With this amplitude dimming, the human eye does not feel a great change in light intensity, so the 88EM8183 significantly improves performance.
The so-called hybrid architecture is that each chip has a DSP core inside, which can solidify the algorithm. In addition to the DSP core, there is an OTP inside the chip to store a small number of parameter values, and the dimming curve can be adjusted according to different needs.
Lance revealed: "At the time we originally designed the chip, it was based on the National Electrical Manufacturers Association SSL 6 (NEMA SSL 6) dimming standard. In this standard, there is no definition of the dimming curve, but a range is defined. There is a curve in the middle of this range, the requirement is that it is best to match the incandescent curve. The measure we take is to adjust the linearity of the dimming to the incandescent curve by combining the built-in OTP and the external DIM resistor. This can be very deep (as low as 1%), compared to similar LED driver solutions that typically only achieve 10% to 20% dimming. So this curve is quite good."
88EM8183 is compatible with over 110 different LED dimmers
Consumers are using LED energy-saving lamps to replace traditional lighting solutions such as incandescent lamps, while also hoping for the same or better lighting experience. Unfortunately, they often find LED lights have problems with dimming capabilities, so they feel that LEDs can flicker when they are almost impossible to dim or dim. Many LED lights are also not compatible with wall dimmers already installed in the home. Marvell's new 88EM8183 deep dimming single-stage AC/DC LED driver IC provides OEMs and ODMs with the most compatible dimming solution, compatible with most dimmers on the global market. Excellent light output quality can increase consumer satisfaction and reduce returns.
It is reported that in order to ensure the dimming compatibility of the 88EM8183 IC, Marvell engineers worked closely with Lutron, the leader in the lighting control industry, to test various dimmers provided by Lutron, including C•L series dimmers. The light can be used for both LED and traditional lighting.
Reduce BOM material by half!
In addition, the 88EM8183 can reduce the number of components required for LED drivers by more than half, greatly reducing the required board area, thus enabling OEMs and ODMs to adapt to LEDs of various form factors, such as A19, PAR, BR. , GU10 and Candle, and will not detract from the dimming performance. 
