Shanghai dragon microelectronics development of high-power MR16 spotlights

Spotlights are widely used in stores and homes to illuminate specific targets. Originally, this kind of spotlight is a halogen lamp, and it uses a standard MR16 socket. Because the luminous efficiency of the halogen lamp and incandescent lamp is very low, life is only about 2000 hours, so it should be replaced by the LED object. In the current market, the most popular type LED MR16 light is 3 x 1W. The purpose of using MR16 is to facilitate the replacement of the original halogen lamp, as long as the pull out the plug can be. However, the power of the halogen lamp is usually 50W, the maximum power of quartz halogen lamp can reach 100W, and the minimum power of 12V halogen lamp is more than 10W. Although the luminous efficiency of the halogen lamp is very low, the use of 3W LED instead of 10W halogen lamp is no problem, but want to use 3W LED instead of 50W or 100W halogen lamp is obviously impossible. Existing MR16 sockets tend to have a 50W electronic transformer, if only the power of 3W is also a bit wasteful. So if there is about 10W of the LED can be replaced by the spotlight 50W halogen light, but also greatly enhance the original 10W halogen spotlights brightness.

To this end, Shanghai long Mao company developed a 3 x 3W MR16 high-power LED spotlights SLM3316.

This high-power LED spotlight uses CREE's high efficiency 3W white LED. There are two kinds of color temperature, SLM3316-CW is bright white, color temperature is about 5800K-6300K, the total lumen number is 450lm. The other is warm white SLM3316-WW with a color temperature of 2700K-2900K and a total lumen of 400lm. This high-power LED light source driver uses the company's production of constant current source SLM2862J. The constant current source can drive 3 3W at 12V LED in 24V can also drive 6 3W LED, but because the lamp only 3 3 Watt LED, so a little put fine timber to petty use. Since the forward voltage of this 3 Watt LED is about 3.5V, the three series will reach 10.5V. So when the power supply is 12VAC or DC, the LED current can reach about 500mA. In 24VAC or DC, you can reach 700mA.

The whole lamp adopts Aluminum Alloy shell, has a good thermal performance, it also prolongs the life of LED, reduce the degree of attenuation. The shooting angle is 50 degrees, and can be well focused on the target. The light is now in mass production.