Author: Engineering LED edit the peach
Foreword:
Under the background of vigorous development of green energy-saving lighting in all countries of the world, LED lighting, as a revolutionary energy-saving lighting technology, is developing rapidly. At the same time, with the increasing use of LED lighting, the LED driver market is also expanding. According to research institutes, the LED driver market will grow by 14% or more next year, and LED driver manufacturers are also optimistic about the growth momentum next year. The LED driver market is growing at a fast pace, and the topic of energy conservation and emission reduction continues to be hot, and the LED driver market will enter the new Warring States era. PWM integration technology, LED indoor lighting and ultra-high brightness LED lights will be the future development trend of LED drive technology.
Analysis of the current status of domestic LED driver market
Before 2008, only a few semiconductor manufacturers in China focused on the LED driver market. In order to meet the needs of LED urban lighting and other projects, more and more domestic enterprises are beginning to flood into the LED driver market, and energy-saving demand is driving the Chinese LED driver market to maintain its growth momentum. In 2009, China's LED driver market only increased by 1%, and by 2010, the growth rate accelerated to 9.6%. According to iSuppli's estimate, it will expand at a compound annual growth rate of 4.4% by 2013. The government's stimulus to demand and corporate investment in the LED industry are driving LED driver sales growth.
iSuppli's forecast for China's LED driver IC market
LED driver market demand analysis
Currently, mobile phones and portable consumer electronics are the main applications of LED drivers, accounting for approximately 67% of the overall market. But as LEDs grow in applications such as automotive lighting, architectural decoration and home lighting, the proportion of portable consumer electronics will continue to decrease.
The application characteristics of portable consumer electronic products are battery-based energy, generally 4.2 to 8.4V, so low-voltage, low-current LED driver ICs are the products that best meet the needs and have a large quantity. LED drivers for consumer electronics have relatively mature technologies, products and relatively mature markets.
In terms of automotive lighting products, since the power supply is from a car battery, it is generally 48V, so a higher voltage step-down LED driver is required. In terms of market demand, automotive lighting uses a large number of LEDs, most of which are series and parallel drives, requiring higher voltages, which is very convenient for the power supply of 48V car batteries. At present, LED driver products that can withstand 60V high voltage have become more common. The market for LED dashboard backlights, front and rear fog lamps, third brake lamps, directional lights, and taillights is very promising in the automotive front-loading market.
As for architectural decorative lighting and home lighting, it is necessary to directly convert the AC power into an LED driver of the DC power source, that is, convert the alternating current into a direct current power source, and at the same time complete the matching with the LED voltage and current. It is not yet possible to provide a single SoC integrated circuit product, mostly modules. Architectural decorative lighting has been widely used in many cities and has excellent energy saving effects. In the future, the demand for household LED lighting will be very large. However, there is still a long way to go before mass production of household LED lighting technology and production costs.
With the continuous expansion of the LED driver supplier team, the competition in the market is becoming more and more fierce. Especially for cost-sensitive consumer markets, such as mobile phones, laptop backlights, etc., LED driver price wars have been frequently opened. Therefore, for manufacturers concerned about the LED driver market, how to improve the cost performance of products is the key to success. The continuous development of new technologies is also reducing product costs while solving technical problems. Therefore, lighting applications have become the focus of research and development of drive manufacturers.
Technical barriers to LED driver development
With the wide application of LEDs, the requirements for LED drivers are also increasing. High efficiency, high power factor, safe isolation, EMI compliance, high current control accuracy, high reliability, small size, low cost, etc. are becoming key evaluation indicators for LED drivers.
Since the LED itself is a linear component, it must operate within the limits required by the specification. The forward voltage and color point will vary with current and temperature, and the forward voltage will vary from device to device. Therefore, the LED driver technology is very demanding, and whether the technical problem can be solved is the key to the development of the LED driver.
The technical challenges of LED driving include heat dissipation and size. LED applications require an energy-efficient power supply that does not exacerbate thermal issues, so it must first address its own thermal issues. At the same time, how to put the power supply into the LED lamp holder is also a big challenge.
LED driver market prospects
LED driver technology is accompanied by the advancement of LED light-emitting chips, making LED power more and more powerful, and its application is becoming wider and wider. From the early instrument indications into the LCD screen backlight, flashlights, car instructions, lighting, decorative lights, etc., until the general lighting field, such as table lamps, bedside lamps, fluorescent lamps and street lamps. In the future, LED drivers will be extended to more applications.
Dongguan Guancheng Precision Plastic Manufacturing Co., Ltd. , https://www.dpowerchargers.com