As the move from traditional lighting to light emitting diodes (LED) accelerates and a wider range of solutions hits the market, consumers have become more selective about the products they choose. In particular, linear dimming with a wide contrast ratio and no chromaticity variation or perceptible flicker is considered the mark of a quality product.

LED require a constant current/constant voltage power supply to maintain efficient operation with good light quality, the LED's luminous flux is proportional to the forward current, so the design need be chosen to power the LED at a higher forward current to boost luminosity, thereby reducing the number of LED required for a given design specification