Global LED drive IC market continues to expand into the focus of lighting layout

From various applications continued to push up the LED value increased, according to the Taiwan research unit topology Research Institute estimates that this year in the LEDTV TV market penetration will reach 43%, to 2014 is expected to reach 100% penetration, shipments from 36 million 950 thousand units in 260 million explosion, Taiwan, in LED lighting the high-profile, LED lighting is expected to advance in the global lighting market in 2011 and will be in infiltration, four years after becoming the general consumers to replace the light source of choice. In addition to emerging applications, the small size of the LED backlight in the mobile phone and consumer electronics penetration has been approaching 100%, a combination of various needs, LED output continues to rise. And with the increase in LED production, LED driven demand has gone up, estimated in 2010 the global LED drive IC market size will expand to 3 billion 700 million or so.

The application of LED driver IC distinction, the current market demand there are three basic categories, one is for consumer electronics products, the characteristics of its application is powered by batteries, so it is generally 4.2-8.4V, low voltage and low current LED drive is the output of the largest and the most widely used products; two is used for automotive lighting products and because of its power from a car battery, is generally 48V, so we need a higher voltage step-down LED driver IC; three is the architectural decoration lighting and home lighting, you will need the AC can be directly converted into DC LED driver IC, the main function is to convert AC voltage to DC power, and at the same time to complete, and the voltage of LED and current.

On the whole, the LED drive of consumer electronics has a relatively mature technology, products and relatively mature market. As for the number of automotive lighting products, such as the use of a large number of LED, most of which are series, parallel drive, the need for higher voltage, for the power of the battery from the 48V car is very convenient.

Drive IC quality LED lighting efficiency

On the whole, the constant current technology which can be used to achieve the same brightness, the pulse width modulation (PWM) integration technology which can integrate the brightness adjustment function, is a kind of technology development of LED driven IC. For lighting applications, compared to the general incandescent lamp can be directly connected to the 220V AC, LED is a low voltage 2-3 voltage driving circuit design, must transform the complex, and whether LED can be a long time to efficient operation, quality to drive power is one of the key, thus the importance of IC LED driver. The existing LED street lamps and ordinary household LED lighting solutions are basically divided into two parts, one part is the 220V power conversion to AC-DC power adapter 24V or 48V, the other part is to provide LED lifting driving current pressure controller on LED. Lighting LED driver IC industry products also seek development in these two areas. Overall, in various types of LED applications, the field of lighting is still part of the melee situation, so it has become the focus of LED driver IC layout. Asia simulation IC important industry rich science and technology deputy general manager and spokesman Zhang Guocheng said that the company's previous preparations for a long time, LED general lighting application products in the product line and the related solutions ready, has begun a substantial performance contribution to the company, the company is optimistic about the development opportunity of the market, is expected to rich will have very good development opportunities, and next year LED lighting products can be seen a certain degree of single digit revenue accounted for. Reduce the consumption and cost of driving IC rich this year in the LED lighting layout will include LED lighting applications in the day before the driver's new IC-RT84 series, rich said, is different from the market by buck LED hysteresis control drive IC rich, full range of products with fixed frequency control, the inductance. To reduce the maintenance for hysteresis control 1/3, the fixed frequency control method also leads to poor accuracy than the hysteresis control change is not with the input voltage and current. Furthermore, we also stand for LED lighting applications put forward different different buck, boost and buck LED solutions. At present the product application on the market mostly adopt buck LED driver IC design, the advantage of this method is simple in concept design, but the number of LED driver will be restricted in the step-down circuit is limited so as to require the use of a large number of IC and the buck, boost rich drive IC can significantly reduce the LED buck drive usage and cost IC more than half of the. In addition to LED lighting, Zhang Guocheng pointed out that the LED backlight driver IC also continues to large size application development, large size LEDTV products have some products to design-in customers, is expected next year will accelerate the application of TV products sales growth, and will become the focus of future layout 2-3 rich focus. A direct application to AC power peihen semiconductor chairman Li Mingru also pointed out that the company prior to the financial tsunami for the duration of the layout of the deep development benefits, is expected in the third quarter of this year is expected to accelerate the appearance of the second half of the season, one of which is the main focus of the LED lighting. Li Mingru said, the company has developed for epitaxial partners conforms to its specifications required for LED driver IC products, no matter in the heat and power output are a niche has a small amount of supply, is expected to become a new growth momentum is expected next year. LED driver with a series of IC lighting peihen in days before the official launch, respectively according to the different application of different structure design, which includes specially designed for MR16, decorative products. And with T8 lamp and other related applications. Pei Heng and said that the current market LED products are generally more than DCLED, you must use a rectifier transformer. In this regard, Pei Heng is introduced directly into the AC power supply LED driver IC, can be saved in the past LED DC