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I have this LED.
And I have this driver.
I'm trying to use it to drive the LED however when I hooked up the one LED to the driver it started smoking. I measured a voltage of 48V while it was working but before it started smoking.
I've been looking over the data sheet to see why, if the driver is rated for 10-43V I would be seeing 48V. I noticed that the open circuit voltages for the driver is 48.
Can anyone help me come up with a way to drive this LED using this power supply?
According to the datasheet for your LED driver, it has a 3 LED minimum load. The 10-43V rating of the driver equates to 3-12 LEDs wired in series. Driving a single LED will probably cause it to lose regulation with the smoky result you witnessed.
Get two more LEDs (3, preferably - I wouldn't re-use one that had produced smoke) and the driver should work well for you.
What smoked - driver or LED?
Device is rated for 3 LEDs minimum.
Exactly what happens depends on their circuitry but fewer LEDs may cause more power dissipation in driver.
Add a resistor in series with LED if using one LED.
LEDs drop about 3.5V.
If using 500 mA version Rmin = V/I = 2 x 3.5 / 0.5 = 14 R.
Try say 22R.
Rpower ~= I^2R = 0.5^2 x 22 = 5.5 Watt
Use 10 Watt 22R resistor.
For 0.7A version use say 15R resistor.
