High voltage LED will dominate the future LED general lighting market

With the arrival of the first year of the LED general lighting market, the proportion of LED lighting lamps will be more than 10%. Due to the emergence of high voltage LED, the majority of LED chip suppliers face a danger of out, the production of low voltage LED chips will become increasingly difficult to sell into the LED general lighting market. High voltage LED will dominate the future of the LED general lighting market.

Reduce the pressure of LED can bring the cost of LED lighting and weight, but the more important is to dramatically reduce the requirements of the design of the cooling system, which effectively cleared the biggest obstacle technology LED lighting into the indoor lighting market. High pressure LED compared to low voltage LED has two obvious competitive advantage.

First, under the same output power, the drive current required by high voltage LED is much lower than that of low voltage LED. As to the high blue chip photoelectric 1W LED as an example, the forward voltage drop of up to 50V, but also that it only needs 20mA drive current can output 1W power, while the ordinary 3V 1W forward voltage drop LED, 350mA drive current to the output power is 1W, so the power of high voltage LED the same output power at work the dissipation is far lower than the low voltage LED, which means that heat can greatly reduce the cost of aluminum shell.

Second, high voltage LED can significantly reduce the loss of AC-DC conversion efficiency. The output power of 10W for example, if the positive pressure drop for 1W high voltage LED 50V, output can take 2 and 4 on the 4 series configuration, the forward voltage drop of LED is 200V, that is to say just from the city of 220V (AC) by AC electric bridge rectifier and 20V can be reduced. But if we use the forward voltage drop of 1W low voltage LED, even if the 10 series of forward voltage drop is also 30V, that is, the need to reduce the voltage from 220VAC to 30VDC power 3V. The input and output pressure is low, AC to DC conversion efficiency is as high as visible by high pressure LED, the efficiency of the transformer can be greatly improved, which can significantly reduce the power loss of AC-DC conversion, reduce and can further reduce the cost of the heat dissipation shell heat consumption.

Therefore, such as using high pressure LED to develop LED general lighting products, the overall power consumption can be greatly reduced, thereby significantly reducing the design requirement of the radiating shell, can be thin aluminum shell lighter can meet the cooling demand of LED lamps, because the radiating aluminum housing cost is the main cost of LED lighting part of reduce the aluminum housing costs also means to effectively reduce the overall cost of LED lighting.