LED the utility load dimmers still very rare

LED need a and incandescent lamp or 7mm full spiral energy saving lamp entirely different types of drive. Incandescent lamp for a stable performance since the characteristics of pure resistance loading, LED is in need of a current source. Produce of the flux LED proportional to approximate the current flows through the device. The positive voltage with current LED increased, but with increasing temperature and reduce. In this respect, LED performance as a diode. However, in the course of work LED the positive voltage (VF) is very big. This voltage and electronic into when the photon energy produced (eV) related, this energy directly related to the color of the light again. In addition, the different production batch of VF value between can vary greatly.

Standard industry and household dimmers designed to incandescent lamp, some more advanced model can and connected to the transformer halogen lamp used together. At present specifically for the utility load LED dimmers still very rare.
Buy and install a new special dimmers of costs can be easily more than light itself, so a move light with existing infrastructure work together china LED Street Light system (such as based on NXP SSL2101 building system), will open the large market potential and space of the gate.
Because of the existing dimmers is designed to incandescent lamp (approximate resistance loading, mostly in the power 20 W and 50 W between), so we need some extra circuit to allow they are used in LED lighting systems. On the market at present is not incandescent lamp dimmers standards, so that now on the market has a lot of different performance parameters and the utility the dimmers.
The existing LED street lamp and the family common china halogen bulb solutions basically is divided into two parts, one is 220 V utility the switch to 24 V or 48 V AC-DC power adapter and, in part, LED to provide the driving current LED boost controller. This division solutions for not only more components, and takes considerable space. In order to solve these difficulties, NXP developed integrated single chip solutions SSL2101. It is also the first integrated adjustable light utility LED drive.