Development Status and Trend Analysis of Lighting Drivers in 2014-2015

Today's LED lighting market usage and business opportunities are general lighting, including 3W-15W residential LED lighting, 15W-75W commercial and building decorative lighting, and 75W-250W outdoor and infrastructure LED lighting. Intelligent lighting will start to grow significantly in the past two years. The mainstream solution of LED driver + sensor + communication protocol will begin to emerge. Lighting driver suppliers are seeking to provide turnkey solutions for intelligent lighting platforms such as drivers, wireless modules, gateways and APPs. Promote the rapid arrival of LED intelligent lighting. Under this circumstance, what is the trend of LED lighting driver market and price trend this year and next? What changes will occur in product form and content? What are the related trends and strategies of mainstream suppliers? This article will analyze these aspects from 2014 to 2015. LED lighting driver market conditions.

First, the market size is increasing, the price pressure is still large <br> According to the IHS report data, the total revenue of global LED driver ICs in 2013 is 1.2 billion US dollars, of which one quarter is from lighting applications, and the overall output value is expected to jump in 2019. To 2.1 billion US dollars, and the proportion of lighting driver IC output increased to 43%, is the fastest growing field of LED drivers. During the period, lighting-driven revenues have grown steadily year by year, and are expected to reach US$400 million in 2014 and US$500 million in 2015.
LED lighting driver IC

Figure: LED lighting driver IC market will grow year by year in recent years

Applications that have a critical impact on LED lighting drivers are still light bulbs (and fixtures), flashlights, landscape lighting and other applications that account for a small market share.

The price of LED light sources is declining. In contrast, the price of drives has remained high, and the cost pressure is relatively large. The possibility of this pressure reduction is relatively small in the near future. It is expected that in the past two years, there will be a trend of dimmable LED lamp drive shipments exceeding non-dimming drivers. Dimmable drives are more expensive than non-dimmable, but some suppliers are looking to narrow the gap to drive the development of the dimmable market and gain greater market competitiveness, which is designed to increase technology competitiveness with dimming performance. Instead of obtaining higher sales prices, the price pressure on lighting driver ICs is still relatively large. It is expected that the price of dimmable driver ICs will drop significantly in 2015 (in fact, Marvell has reduced the price of dimming products from $1.50 to less than $1 last year and lower in 2015), further squeezing non-dimming drivers. IC market and price space.

Second, the 2014-2015 driver product keywords: dimming + simplification <br> Lamps are not only simple lighting tools, but in the energy saving, environmental atmosphere adjustment has a higher demand. This has led LED lighting drivers to move smarter, while at the same time pursuing higher cost performance and ease of use, it also strives to be more streamlined.

Intelligent lighting is not yet strictly defined. It is expected that the LED driver + sensor + communication protocol is a relatively accepted method. Dimming applications have attracted most drive manufacturers, including international and domestic mainstream suppliers, and higher dimming compatibility will be a direction for drive efforts. The main obstacle to the development of dimmable lamps is the compatibility of dimmers, including compatibility with various existing dimmer technologies, such as TRIAC, low voltage (0~10v) linear and PWM dimmers. It also includes compatibility with next-generation electronic dimmers; and electronic dimmers have proven to be more difficult to interchange than traditional TRIAC dimmers. At present, the performance of LED driver solutions supported by international manufacturers is relatively good, but the structure is complex and the cost is relatively high. Chinese manufacturers are seeking breakthroughs. The thyristor dimming compatibility is higher than 90%, and the price is lower than international manufacturers. Program.

Policy standards place increasing demands on the performance of lamps and drives. Many stringent regulations around the world have raised requirements for PFC (Power Factor Correction) and input harmonics, such as "Energy Star" requires LED lamps to be adjusted down to 10% of measurable light, "Energy Star" And the European Power Manufacturers Association (IEC 61000-3-2) requires residential lighting with a power factor greater than 0.7 and commercial lighting with a power factor greater than 0.9. Controlling costs while maintaining overall performance is no easy task, and lighting driver suppliers will tend to adopt more optimized circuit designs and eliminate additional discrete components to reduce costs. Single-level drivers with small size, high PF, no stroboscopic, and dimming compatibility are likely to be available soon, and manufacturers have already made plans.

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