Cree's new XLamp MHD series achieves COB performance in surface-mount LEDs

Providing a lower system cost than medium power LEDs in a more efficient manner January 23, 2015, Shanghai, China - Cres (Nasdaq: CREE) announces the introduction of high-power XLamp ® MHD-E LED devices and XLamp ® MHD The -G LED device, based on the success of the groundbreaking XLamp ® MH family of LED devices, combines the high lumen density/high reliability of ceramic-based COB LEDs with the design/manufacturing advantages of surface mount structures. By using the elements of the Cree SC5 technology platform, ceramic-based XLamp? MHD LED devices can simplify development, increase design flexibility, and increase manufacturing efficiency over medium-power LED devices. The MH Series delivers industry-leading performance while delivering new designs and significantly reducing system cost.


Baly Luo, general manager of Aeon Lighting Technolog, said: "The high lumen output and high reliability of Cree's new MHD-G LED devices help us develop new downlights and have advantages over other downlights on the market. ALT compact The 4-inch downlight enables more than 1,800 lm of light output at 3,000 K color temperature with the Cree MHD-G LED device. Other downlights only provide 800 - 1,000 lm light output."

Cree XLamp ® MH LED devices are available in 7 mm x 7 mm packages and are powered by Cree's industry-leading EasyWhite ® technology, which delivers smaller board sizes and tighter than mid-power LED devices. The beam angle, and closer to the traditional shape. The XLamp ® MHD-E LED device achieves over 1,800 lm of light output at 14 W power. The XLamp ® MHD-G LED device achieves over 2,500 lm of light output at 19 W power. XLamp ® MHD-E LED devices and XLamp ® MHD-G LED devices are ideal for semi-directional, high lumen applications such as downlights, high ceiling lights, and outdoor area lighting.

Paul Thieken, Global Marketing Director of Cree LED Devices, said: “At Cree, we are constantly introducing innovative products to help our lighting customers gain a better position in the market competition. With XLamp ® MHD LED devices, we prefer the surface. Mounting technology lighting customers offer COB performance. It is easier to achieve lower system cost for lighting customers than homogenized medium power LED devices."

Cree XLamp ® MHD-E LED devices and XLamp ® MHD-G LED devices offer high color rendering index, color temperature 2,700 K - 6,500 K, and a variety of voltage options. Sample applications are now available and can be mass produced according to standard delivery times. For more information, please visit

On-Grid Inverter

On-Grid Inverter converts DC power to AC power for feeding back to the grid. The frequency of the output voltage of the grid-connected inverter needs to be the same as the grid frequency (50 or 60Hz), which is generally achieved by the oscillator in the machine, and the output voltage will also be limited not to exceed the grid voltage. Modern high-quality grid-connected inverters can have an output power factor of 1, which means that the output voltage and current phases are the same, and the phase difference between them and the grid voltage is within 1 degree. There is a microprocessor in the inverter that can sense the AC waveform of the grid, and according to this waveform, generate voltage and send it back to the grid. However, the electricity sent back to the grid needs to have a certain proportion of reactive power, so that the power of the nearby grid is within the allowable limit. noon) its voltage may rise too high.
If the power of the grid is cut off, the grid-connected inverter needs to be disconnected from the grid quickly. This is a regulation of the National Electrical Code (NEC) in the United States to ensure that when the grid is out of power, the grid-connected inverter will not provide power to the grid, and at this time the workers who maintain the grid will not be electrocuted.
Properly configured, grid-tie inverters allow a home to use alternative energy sources that it generates itself (such as solar or wind power) without cumbersome wiring and without the need for batteries. If there is insufficient alternative energy, the insufficient part will still be provided by electricity from the grid.
Grid-connected inverters are widely used in household photovoltaic power generation systems, commercial and industrial photovoltaic power plants and other scenarios. By connecting to the grid, they help to achieve efficient use of renewable energy and reduce carbon emissions, promoting sustainable development and popularization of clean energy.

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