Which driver? Led color mix…

[baseballfanatic2]

Hello,

Can someone help me decide which driver to go with please to power all 8 channels?

I am going to have a pcb board designed to have 8 channels that can dim separately.

Channel 1: 6 royal blue
Channel 2: 6 blue
Channel 3: 2 400-410nm UV
Channel 4: 2 410-420nm violet
Channel 5: 2 cool white
Channel 6: 2 neutral white
Channel 7: 2 warm white
Channel 8: 1 mint or lime (haven’t decided)

Also, any suggestions on adding/removing led colors? I feel pretty confident in the color choice

 

[shwareefer]

You say " help me decide". Does that mean you know of and have in mind some multichannel driver options? I've done some googling and the only multichannel devices I see are low power ( under 150ma) designed for signage.

Are you planning PWM or 0-10v dimming?

 

[oreo54]

Hello,

Can someone help me decide which driver to go with please to power all 8 channels?

I am going to have a pcb board designed to have 8 channels that can dim separately.

Channel 1: 6 royal blue
Channel 2: 6 blue
Channel 3: 2 400-410nm UV
Channel 4: 2 410-420nm violet
Channel 5: 2 cool white
Channel 6: 2 neutral white
Channel 7: 2 warm white
Channel 8: 1 mint or lime (haven’t decided)

Also, any suggestions on adding/removing led colors? I feel pretty confident in the color choice

Let's start out " simple" at the moment with a lot of guessing
First you will need 8 drivers.
Using dc/dc drivers meanwell LDD's are easy to use.
Then you will need an ac/dc power supply to feed them.
Since your rb and blue are the biggest channels you will design around them.
"Assuming" around 3.6v @ 1Amp x6 would be 21.6 volts.
"Assuming" ldd's that have a max voltage output about 3 volts lower than supply voltage... 24.6 volts
Slightly higher than a standard 24 volt ps but 1) only an estimate at this point. NEED real numbers for v(f) and real current
2) Many meanwell power supplies can be tweaked to increase or decrease their voltage output.
Soooo assume you can use a 24v dc power supply.
Now on to wattage (amps).
To make it simple for the time being assume 4w per diode.
92w ps or 4 amp.

Dimming per channel is 5v (2.5-6v)pwm up to 1Khz (100-1000Hz) for most ldd-h's.

As to lime or mint... I'd suggest neither and just do a cyan/amber channel ( one of each I guess). Will give you a lime look but fills a spectrum hole in the cyan range. Just an opinion.
Not sure why your need for 3 different whites.
Warm white (3000k) plus cool white (8000k) would suffice in general.

There are more " right" spectrums than wrong.
There are a multitude of considerations like do you want a shallow or deep look to have the most par?
What is your viewing preference? Ect.
Even as to emulate the changing spectrum of real sunlight over time.