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Custom RGB+W COB LED fixture driver

Saucy

Feb 23, 2023
2
Joined
Feb 23, 2023
Messages
2
I have a RGB+W COB LED that I want to turn into a custom aquarium light for my aquascape.

I'm wondering what Driver I need to buy if I want to be able to independently dim any given LED group on this COB (Red, Green, Blue, White) to customize the end result coloring for the light. Do I have to buy 4 dimmable drivers (one for each color) in order for this to work or are there drivers out there that have multiple channels for dimming? This project would be powered by Mains voltage. Should I be looking at Constant Current Drivers for this application?

I also don't have an issue underdriving the LEDs to cut down on heat and extend lifespan. I don't necessarily need the full 100W capability advertised if that helps my situation at all. I assume the 800mA used in the tables below is for the max rated output of the COB?

any input is appreciated, thanks!

1677192581989.png1677192617806.png

RGB+W COB LED 4040 100watt
ColorVoltageCurrentLumenWd/CCTSeries/Parallel
Red22-26V

800mA
800-1200LM620-630nm10S1P
Blue
27-30V
800mA
400-600LM
460-470nm
9S1P
Green27-30V800mA1400-1600LM
520-530nm
9S1P
White27-30V800mA1300-1500LM3000K~6000K9S1P


1677192600177.png
 

kellys_eye

Jun 25, 2010
6,514
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Jun 25, 2010
Messages
6,514
Infinitely variable colour might seem attractive but only using the basic RGB and switching them on/off can often give the colour you need. Sure you want 'full' control? If so then, yes, get individual dimmers (simple PWM).

Heatsinking WILL be required. I have an aquarium light and it MUST be submerged to prevent overheating and it's not even 100W!
 

Saucy

Feb 23, 2023
2
Joined
Feb 23, 2023
Messages
2
Thanks for the input, I do plan on heavily Heatsinking this.

So I found a Driver that appears to be mostly perfect for this application with exception that the input voltage is for European mains (220VAC) instead of North American (120VAC). Could I just use a 220v to 110v adapter to power this?

 

Harald Kapp

Moderator
Moderator
Nov 17, 2011
13,700
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Nov 17, 2011
Messages
13,700
Using a 110 V to 220 V converter is a clumsy way. 110 V controllers (Tx + Rx) are readily available, e.g. this one.
Also it seems that you'd have to buy the remote control transmitter separately.
 
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