Dimmable LED driving power has great prospects

“With the decline of LED lighting prices, LED intelligent dimming will rapidly increase in commercial lighting applications, and it is expected to show an exponential growth from 2014 to 2015.” Lance Zheng, Marvell's director of technology marketing for green technology products, was hosted by Yi Weixin. The second "Industry and Technology Trends Media Seminar" said in an interview with OFweek Semiconductor Lighting Network. As an up-and-coming star in the LED-driven electronics industry, how will Marvell take advantage of his strengths in a highly competitive market? With these questions, listen to LanceZheng how to answer.

The demand for the development of the commercial LED lighting market drives the intelligent dimming market of LED lamps

With the continuous improvement of LED light source technology, the price of terminal luminaires has shown a rapid decline. Take an LED bulb that can replace 60W incandescent lamps as an example. In 2010, the retail price was 40 US dollars, and the price has dropped to 10 US dollars this year. With the strengthening of the popularity of LED lighting by the Chinese government, it is expected that the global LED lighting market will gradually pick up in 2013 and prices will enter a new round of downward adjustment channels. It is estimated that the price of LED bulbs replacing 60W incandescent lamps will fall to 5 US dollars in 2015. about.

According to the "12th Five-Year Plan" for the development of semiconductor lighting technology promulgated by the State, by 2015, China's LED lighting industry will reach 500 billion yuan, focusing on cultivating 20 to 30 leading enterprises and establishing 20 national-level industrial bases. 50 "Ten Cities, Ten Thousand and Ten Thousand" Pilot Demonstration Cities, Promoting China's Semiconductor Lighting Industry to Enter the World's Top Three. The 12th Five-Year Plan of the National Basic Public Service System also mentions that 2.2 billion yuan of financial expenditure will be allocated to support the promotion of energy-saving lamps and LED lamps. Industry sources said that 2.2 billion in subsidies will reduce the price of LED lights, a drop of 15% to 20%, will stimulate the country to accelerate the promotion of LED lighting products, especially the civilian and commercial LED lighting market.

In recent years, with the rise of the global LED commercial lighting market, many LED manufacturers including China have placed LED commercial lighting products in an important position in market development. In particular, due to the recent demand for high efficiency, long life, high power factor, flexible expansion, and dimmable requirements for LED lighting products in major markets in Japan, Europe, and the United States, the LED driver IC and Power Supply industry is facing a new revolution. . Therefore, in the next two years, the intelligent dimming of LED lamps, especially in commercial lighting, is expected to increase rapidly.

Solving dimming compatibility issues is the key to the current development of LED lighting market

LED bulbs have excellent energy efficiency and long life and are considered as replacements for incandescent lamps and compact fluorescent lamps. The research company DatapointResearch estimates that the LED lighting market in lighting applications will grow from about 200 million baht in 2011 to 1 billion baht in 2015. However, at present, the main obstacles to large-scale adoption come from the relatively expensive purchase costs and the same dimming compatibility issues as the compact fluorescent lamps.

"In LED lighting applications, the challenges of dimming technology are very large." Lance Zheng, Marvell's director of technology marketing for green technology products, said that the main challenge is that the price of LED light sources is declining, but the driving electronics technology is not very innovative. The price has remained high and there is pressure on costs. Secondly, because LED lighting adopts the current driving mode, and the existing dimmers are mostly voltage dimming, the challenge in compatibility is also quite large. In addition, the trend toward lighter and lighter power supplies also requires LED drivers to have a smaller size. As consumers, LED lighting products need to use the driver IC dimming technology to provide consumers with a unique sensory experience.

Marvell® 88EM8183 achieves a minimum depth dimming of 1%

"Marvell's portfolio of LED solutions uses innovative lighting architecture and networking technologies to enable outstanding green LED lighting applications. These complete LED lighting solutions are designed to provide cost-effective, fully integrated end-to-end silicon and software solutions. Original equipment manufacturers can develop best-in-class LED lighting and lighting control solutions.” Lance Zheng described Marvell’s LED solutions. Marvell's innovative mixed-signal LED drive architecture provides high efficiency, high power factor and low harmonics for LED lighting applications, while advanced dimming technology ensures deep dimming and compatibility with existing lighting architectures. In addition, the high integration of integrated circuits (ICs) reduces material costs and allows the use of compact printed circuit boards (PCBs).

The Marvell solution for the retrofit bulb home market is based on the 88EM8183 (deep-dimming single-stage AC/DC constant current controller) designed for off-line dimmable LED lighting applications. It can achieve a minimum depth dimming of 1%, compared to similar LED driver solutions generally only achieve 10% to 20% of the dimming, and highly compatible with a wide range of thyristor dimmers. The 88EM8183 uses a unique primary-side current control mechanism to achieve its tight output current rectification over a wide range of AC input. The device uses quasi-resonant control, valley switching methods and power factor correction functions to achieve high efficiency, high power factor, low harmonic distortion and low electromagnetic interference. This IC is compatible with most dimmers in the global market, and provides excellent light output quality, which can increase consumer satisfaction and reduce returns.

It is worth noting that the 88EM8183 can significantly reduce the number of external components of the dimmable LED driver. Marvell's full-system reference design board requires only 33 components in total, compared to more than 70 yuan currently available in the market. Devices. This can reduce the cost of the overall solution by 30-40%. The 88EM8183 greatly reduces the board area required, thus enabling OEMs and ODMs to adapt to a wide range of LED sizes such as A19, PAR, BR, GU10, and Candle without sacrificing dimming performance.

LanceZheng stressed that “significant reduction in the number of components has contributed to the popularity of LED lighting technology in applications such as retrofit lamps, where both cost and space are limited. This makes Marvell’s LED driver prices 20%-40% lower than competitors’ similar products. ”

The 88EM8183 is ideal for the following LED lighting applications: GU-10, downlights, panel lights, LED modules and more.

System-wide intelligent LED lighting platform

Marvell's new smart LED lighting platform embodies Marvell's forward-looking vision for green lighting applications. Its goal is to provide OEMs with a complete hardware and software solution that allows them to develop products in less time and at a lower cost. Put into the market. At the same time, the platform is a green energy-saving solution that includes LED lighting components based on Marvell's innovative LED driver chip, ZigBee network, ZigBee/WiFi wireless gateway, and intelligent lighting software. These components together improve the system's energy efficiency and ensure high-quality LED lighting to promote environmental protection and a convenient lifestyle.

Marvell's intelligent LED lighting management platform provides fully integrated LED lighting and wireless control systems, so the ease of use and the reduction of installation costs tend to be the ultimate, greatly simplifying the difficulty of use and maintenance, so that non-professionals can also Easily deal with. A major feature of the platform is that it allows end users to use smart phone and tablet solutions so that they can easily manage, analyze and maintain a more cost-effective digital lighting solution from anywhere.

This smart LED lighting platform can significantly save commercial and residential electricity. And with the introduction of new LED lighting applications, users can also add more security features and enhance the remote management experience, such as high-quality lighting adjustment, atmosphere and on-site control.