High Voltage LED will dominate the future of

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With the first year of the arrival of the LED general lighting market, LED lighting and the overall lighting ratio will exceed 10%. Due to high-voltage LED, most of the LED chip suppliers are facing an out of danger, t he production of low-voltage LED chips will become increasingly difficult to sell into the LED general lighting market. The high-voltage LED will dominate the future of LED general lighting market.

High-voltage LEDs can bring to effectively reduce the cost and weight of LED lighting, but more importantly, the significance of significantly reducing the cooling system design requirements, which will effectively clear the technical barriers to LED lighting into the interior lighting market. High voltage LED compared to the low voltage LED There are two distinct competitive advantage.

First, in the same output power, high voltage Led floodlight drive current significantly lower than the low-voltage LED. Such as high-voltage chip photoelectric blue 1W LED s forward voltage drop of up to 50V, that it is only 20mA drive current output power of 1W, while the average forward voltage drop is 3V 1W LED requir es 350mA drive current to output 1W power, the power dissipation of the same high-voltage LED output power at work is far lower than the low-voltage LED, which means that the cost of the heat dissipating aluminum enclosure can be greatly reduced.

Second, high-voltage LEDs can significantly reduce the AC-DC conversion efficiency losses. 10W output power, for example, if the forward voltage drop of 50V, 1W high-voltage LED output can take two and four-string configuration, four series-connected LED s forward voltage drop is 200V, that is just from the City power 220V alternating current (AC) bridge rectifier and drop 20V on it. However, if we adopt a forward voltage drop is 3V 1W low voltage LED, even if the forward voltage drop of 10 strung together, but 30V, that is step-down from 220VAC mains to 30VDC. Input and output differentials, the lower the AC to DC conversion efficiency is higher, and can be seen such as the use of high-voltage LED transformer efficiency can be greatly improved, thereby significantly reducing the power loss when the AC-DC converters, this heat consumption to reduce can also further reduce the cost of the cooling shell.

Therefore, if a high voltage LED to develop LED general lighting products, the overall power consumption can be greatly reduced, thereby significantly reducing the design requirements of the thermal shell, available thinner and lighter aluminum casing can meet the cooling needs of the led lights for homes lamps, due to thermal The cost of aluminum casing, LED lighting, the major cost component of the cost of aluminum casing to reduce also means that the effective reduction of the overall LED lighting costs.