Electrical - What kind of DC Power Supply do I use to Drive Luminus LEDs?

Short answer: Constant Current

Constant current power supplies are always the best choice for driving LEDs in continuous wave* (CW) mode.  LED light output is directly proportional to current and has a nonlinear relationship with voltage since the current depends on the current-voltage (IV) curve of that specific device.

Constant current power supplies have a current setpoint and dynamically adjust the voltage to maintain the setpoint.  They supply the same current as the ambient temperature changes so they have a more stable light output.

Many constant current power supplies are dimmable.  This works well from full current down to about 10-20%.  Below 10-20% some power supplies have linearity, hysteresis, and flicker issues. If you need to dim to zero there are solutions.  Our partner, Cuvee Systems, has flicker-free power supplies that can dim to 1%.

The Luminus Ecosystem provides suggestions for power supplies suitable for specific Luminus products.

* This is an old laser term that the LED industry adopted. It means that you are using direct current (DC) to drive your LED.

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