LED Lighting Blog

In the same output power, High-Voltage LED drive current is significantly lower than the low-voltage LED. Epistar high pressure blue 1WLED, for example, the forward voltage drop of up to 50V, that it is only 20mA drive current output power of 1W, led high bay, while the average forward voltage drop is 3V 1WLED need 350mA drive current to output 1W power dissipation of power by the same high-voltage LED output power at work is far lower than the low-voltage LED, which means that the cost of cooling the aluminum casing can be greatly reduced.
High-voltage LEDs can significantly reduce the AC-DC conversion efficiency loss. 10W output power, for example, if the forward voltage drop of 50V 1W high-voltage LED, the output can take two and four-string configuration, four series of LED forward voltage drop of 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 to say from the 220VAC mains step-down to 30VDC. We know that the lower the pressure difference of the input and output AC to DC conversion efficiency is higher, can be seen such as the use of high pressure the LED, led high bay, the efficiency of the transformer can be greatly improved, thereby significantly reducing the power loss when the AC-DC converters, which a heat consumption to reduce but also to further reduce the cost of the cooling shell.
Therefore, if the 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, such as we can use thinner, lighter aluminum casing can meet the cooling needs of the LED lamps an integral part of the cost of aluminum casing to reduce also means that effectively reduce the overall LED lighting costs due to the cost of the heat dissipating aluminum enclosure is the major cost of LED lighting.Thus, high voltage LED can bring to effectively reduce the cost and weight of LED lighting, but its significance is dramatically reducing the design requirements of the cooling system, which will effectively cleared the LED lighting indoor lighting markettechnical obstacles. Therefore, the high-voltage LED will dominate the future of LED general lighting market.
The continued enthusiasm of the LED voltage LED, also accompanied by an increase in high-voltage LED customers, contrast, low voltage LED chips are facing the danger of more and more difficult to sell into the LED general lighting market.
Compared to low-voltage LED, the more popular argument is that the high-voltage LED has two clear competitive advantages: First, in the same output power, high voltage LED drive current significantly lower than the low-voltage LED. Second, high-voltage LED can significantly reduce the AC-DC conversion efficiency losses.