Why high brightness LEDs require high performance LED drivers

Guest columnist Jeff Gruetter, product marketing engineer for power products at Linear Technology outlines why high brightness LEDs require high performance LED drivers…

High brightness (HB) white LEDs (Light Emitting Diodes) are quickly replacing incandescent lighting in many home, institutional, government and industrial applications.

In many cases, the higher efficiency of the LEDs reduces power consumption by as much as 88%, dramatically reducing carbon emissions required to generate the electricity to power them.

Large arrays of white LEDs are replacing CCFL lighting for backlighting large LCD-TFT panels found in HDTV applications. LED’s higher efficiency, long life and ability to offer local dimming capability have enabled LCD HDTVs to attain contrast ratios in excess of 7,000,000:1, exceeding the CCFL-based designs by orders of magnitude.

So it is not surprising that with the proliferation of LED lighting in so many applications that their growth rate continues to accelerate.

According to Strategies Unlimited, The HB white LED general lighting market is forecast to exceed $5 billion by 2012, corresponding to a compound annual growth rate (CAGR) of 28% from 2009 to 2012.  

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Tags: power consumption

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