Transformer based isolated LED power supply will be the mainstream

Isolated and non isolated LED driver power program has its own advantages and disadvantages. The industry believes that ClassII will be the mainstream, because it simplifies the problem of LED heat dissipation.

The ClassI or II system depends on the grounding system, and in most cases it is related to the installation location. ClassII is more common, it requires a two-stage or enhanced isolation, that is, the transformer magnetic windings, insulation tape and physical isolation. ClassI system requires a ground cover and (or) mechanical barrier, while the ClassII system does not need the.

There are several trends are driving the development of LED lighting market.

Transformer based isolated LED power supply will be the mainstream

The first is the high reliability high brightness LED efficiency of continuous improvement and very high efficiency constant current LED drive power continue to emerge, followed by global legislation to ban incandescent lighting (due to its low efficiency) gradually fade out and CFL energy-saving lamp (if you break it, it will be out of environmentally harmful mercury). Together these factors are making LED lighting a long-term trend.

Of course, low system costs (including LED, thermal management systems and LED drives) will always be the driving force for widespread adoption of LED general lighting. In fact, in many LED lighting products, failure is a common phenomenon, mostly because of power failure, rather than the failure of LED.

At the design level, this means that OEM must become an expert in system thermal design. LED provides high efficiency, but they also produce more heat conduction than incandescent or energy-saving lamps. Since many LED lighting applications are enclosed in a small space, it is difficult to dissipate heat by means of ventilation. Without careful thermal design, the LED and power supply circuits are prone to degradation or permanent failure due to high temperatures.