LED drivers have evolved over the years from constant voltage topologies into the far more energy efficient continuous current setup. Continuous current drivers deliver the required current directly to an LED with no additional present regulator and are widely available in a variety of present output levels.
Lately, as LED luminaires have continued to develop in sophistication and range and the amount of distinct fixtures in the marketplace has increased, lighting designers have started to demand flexibility in their driver hardware the standard constant current topology can not supply.
The ideal situation for lighting designers would be to add a degree of flexibility into the driver hardware so that the exact same driver may be used across a product range of varied lighting fittings. This waythey could respond more rapidly to market demands for new product types, as they would already have suitable hardware in stock. Inventory would be much easier and there would be no requirement to spend time and money qualifying new drivers all of the time. The industry responded to these requests with a whole new breed of LED drivers for lighting which are software programmable, altering their output based on how they are programmable LED driver. With this added degree of flexibility, a lot of products are also capable of tuning their output to meet the requirements of future, less power-hungry LED solutions. And rather than the constant current technique used in the past, where decreasing the output would result in less energy accessibility from the driver, some of the most recent drivers are effective at continuous power output, which can be more efficient at all present levels.