LED Power Cost Control and Market Development


 
In the role of long-lived effects and policy -driven LED lights , LED lighting into the 2013 outbreak , but after the outbreak usher , will gradually decline of the market, according to market research firm HISResearch lighting market share report shows , light source sales began to decline gradually from 2015.

Report IMSReserch company announced in April 2012 showed that the price of LED lights tend to $ 30 in 2009 will be all the way down , so 2017 will exceed $ 5 mark. Popularization of LED light depends on its rate of decline in the price , while 40% of the cost spent on the LED drive control circuit cost , thus including LED driver IC control circuit including a reduced critical. Corresponding to this is that the drive control circuit is expected to reduce costs by 36% between 2013 to 2015.

LED drive power though a breakthrough in technology, but the cost has remained at around $ 200 , if the sales price of less than $ 400 , basically a loss , while foreign manufacturers such as Philips was able to achieve a minimum sales price of about $ 180. With the increase of labor costs , rent , marketing and office costs , LED drive power price rather difficult , many companies had to fill technical and cost pressures from the design.

Simplified topology

Structural design must be optimized to reduce prices continued technology upgrades , while minimizing the number of components using the IC , LED general lighting in the ninth driver technology seminar held on November 25 , the Chun-Ming Guo from PI pointed out that lower the cost of LED bulbs , you need to change the LED driver technology. In the report, Chun-Ming Guo pointed out that with advances in LED driver technology, the conversion from a bipolar drive to a single-stage drive technology can reduce the cost of demand drivers , and in the choice of currently available LED driver available topology on even more many tend to use non-isolated drive. He also mentioned that the use of buck converter topology of small volume , low- drain - source voltage stress , the number of filter components used in the least , and therefore can achieve high efficiency advantages of having the best EMI performance compared with the flyback topology and unipolar constant current PFC flyback combining its lowest cost.

Chun-Ming Guo also lists requirements at the lowest cost bulb drives , such as the use of small fins most likely to achieve high efficiency, high-voltage and low-voltage input , are required to meet the European Commission directives and environmental settings Energy Star consumer lighting requirements use buck and buck - boost topology and EMI filter circuit as simple as possible in order to achieve a minimum number of components , with minimal number of LED brightness to meet the minimum standards and reduce the temperature of the heat sink to achieve stress in the production process the guaranteed output current . By reducing the topology LED driver designed only cost optimization for enterprises, strictly grasp Specifications are key factors to ensure product quality.

High efficiency drives can achieve by simply setting specifications set required for accurate grasp of design specifications will result in excessive costs to improve product ; assembly in terms of cost savings , you can try the functional integration to reduce board space reached ; optimal design can be used with minimal safety margin to meet consumer demand.

High-voltage linear constant current technology

No high-voltage constant-current power transformers and other magnetic devices , no electrolytic capacitors , can save one-third of the general cost of switching constant current power supply , because the system is simple , just a few external components, suitable for volume , cost requirements system, but with the advent of technology HVLED lamp beads , non-isolated high-voltage constant-current LED drive power LED light source technology has become a new hot spot driver . Professor Yan Shanghai Institute of Microelectronics , Peking Shigemitsu LED general lighting in drive technology seminar also demonstrated HVLEDs + high-voltage linear constant current driver integrated optical engines: the drive power chip LEDs light beads coated copper and aluminum substrates placed on the same side , to facilitate the automated SMT production . The power supply without transformer , no electrolytic capacitors, low production costs. In a live demonstration of the high-voltage constant-current scenario, the non-magnetic components, no EMI filtering , built-in high-voltage power tube , can be used to design and produce integrated optical engine. However, this technique has its limitations , can be a good solution yet strobe , PF, voltage regulation and other issues need to be improved and resolved.
(Source: New Century LED Network)

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