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May 27, 2014
about 6 years ago
You might try the 3W LEDs running at approximately half power first. They still put out a lot of light, and in addition they run cooler and with higher luminous efficacy so you get more lumens per watt. In some applications, it may make sense to just double up on LEDs instead of running each at their maximum.
This may or may not help, but I'm pleased with the output of the 3 watters at about 1.5 watts.
Driving the 3 watt warm white and cool white LEDs with the femtobuck I'm surprised to find the brightness is still good and the integral heat sink is adequate at the reduced 350 mA level.
Since LEDs are more efficient when they run cooler / at reduced current, for some applications it may make sense to use a 3W LED at a 1-1.5 watt level. I think I'll double up on LEDs instead of modifying the driver board for higher output current...
No public wish lists :(