Bridgelux EB series gen 3 strips

[TEKNIK]

Yes but if you limit the voltage then that does not occur

[TEKNIK]

I am running a 5050 led at 70mA, the voltage of the driver is set to 24V but because the output current is only 70mA the voltage drops down to suit.

[TEKNIK]

You can see the output voltage is 22.3V. I will now adjust the output voltage of the driver to 22.3V and increase the current to 150mA

[TEKNIK]

You can see although I have increased the current the led will not be able to take more and is still only using 1.1 Watts.

I'm going to let it heat up to see how much more it may take

[TEKNIK]

I have now adjusted the current to 3amps but nothing has changed as the voltage is limited. I took a picture as shown here of the current

[BirdBare]

Yeah I understand what your saying. So let me ask this. If I am running an LED strip how can I confidently say the voltage will limit the current when the current increases 2 fold with a 0.8 increase in voltage? That could never work to protect an array of led strips because the vf drops as the temp increases.

I am using this example as my reference: https://www.rollitup.org/t/bridgelux-eb ... ls.957453/

At 19.26 volts the current is 700ma. At 20.08 volts the current is double.

I don't think voltage limiting will work in this regard. Your leds would burn long before you noticed the 2x increase in current. Especially if you are away from home. And your driver would have no way of saving them because the voltage change is so small. If I'm wrong please correct me.

[BirdBare]

I have now adjusted the current to 3amps but nothing has changed as the voltage is limited. I took a picture as shown here of the current20190804_141103.jpg

But if you increase the voltage by 0.8v (as an example) the current would jump substantially and burn out the led. Do the HLG drivers allow that kind of voltage control?

[TEKNIK]

So this is why you need to set everything up and adjust it when it is running. If it is a major concern you can do it when it is hot, what will happen if you adjust it when hot is it will run at a lower current until it has fully warmed up

[TEKNIK]

There is a screw adjustment on A and AB drivers, you just need to adjust it slowly

[BirdBare]

So this is why you need to set everything up and adjust it when it is running. If it is a major concern you can do it when it is hot, what will happen if you adjust it when hot is it will run at a lower current until it has fully warmed up

So do you run the HLG is CC or CV mode? Because it seems from the datasheet you cannot adjust voltage when it is in CC mode. I know you said it always runs in CC mode, but the datasheet disagrees.