Maxim Announces New Offline LED Driver with Flicker-Free Dimming
Oct 10, 2011
Maxim Integrated Products introduced the MAX16841, an offline LED driver capable of providing a flicker-free dimming from maximum light intensity to zero. This full dimming range is done with both leading-edge (triac) and trailing-edge (transistor) dimmers, with constant control the reason behind improved efficiency at low and high-AC line voltages.
This new driver from Maxim is a universal solution for Japanese, Chinese, U.S., and European dimmer models due to its broad input range from 90VAC to 265VAC.The MAX16841 provides a smooth transition from incandescent and halogen lamps by eliminating problems with compatibility arising with preinstalled dimmers. Its ability to operate without electrolytic capacitors also extends the life of the LED, saving space and cost all the while. As a result, the LED driver is best for use with retrofit dimmable LED lamps and universal LED bulbs in industrial, commercial, and residential lighting applications.
A problem often encountered when retrofitting LED lamps to incandescent or halogen dimmers is incompability with the leading-edge and trailing-edge models. While the older forms of lighting required purely resistive loads of dimmers, LEDs do not function so well under the same conditions. This leads to the flickering or other forms of erratic lighting experienced with older dimmers. The MAX16841 solves the discrepancy in power supply by actively shaping the lamp's input current. Consequently, LED lamp designers can avoid expensive infrastructure updates and still receive seamlessly dimmable lighting.
For more on the MAX16841:
Author: Rebecca Milne
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