Matching Drivers and COBs

ttystikk

ttystikk

Well-Known Member
GroDank101 said:
Out of those two choices, maximum GPW. I really would prefer to only run 8 cobs in the 4x4 if its enough to flower, to save the money not buying 4 or 8 additional cobs.

Maybe only 8 is enough but I think I should run them at 1750mA or 2100mA. Sucks I have an extra 185-1400 laying around and I probably won't use it.

With 4 heatsinks, could I possibly achieve passive cooling?
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Maximum gpw means running dim, less watts and less light pressure.

Maximum grams is running what's needed to crank up the output, even if the overall gpw number falls.

Your 185 1400 isn't a big investment and it will cost much more than that to utilize it. Save it for another project, maybe.

The HLG600 is the option with the most watts, the least number of chips and the lowest number of drivers- all of which drives your overall cost per PARW lower.
 
GroDank101

GroDank101

Well-Known Member
ttystikk said:
The HLG600 is the option with the most watts, the least number of chips and the lowest number of drivers- all of which drives your overall cost per PARW lower.
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I like that a lot. so I'm probably going to use the 600-2100. I'm assuming it can run 8 (36v) cxb3590s at about 75Watts?
 
MrTwist1

MrTwist1

Well-Known Member
coreywebster said:
http://www.meanwell.com/search/HLG-600H/HLG-600H-spec.pdf

24a? I'm confused by these, only used to looking at constant current drivers
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This type of driver is slightly different. I believe that is constant voltage instead of constant current. I do not use this type, but I believe you must wire in parallel in order to use these. So that 24A would be divided by the number of COBs in a parallel configuration. I think you would need the HLG-600H-42 since the 3590s have a forward voltage of around 36v, but it's probably smart to have a little headroom. @CobKits is the guy to ask about this.

Bear in mind also this seems like A LOT of power to be messing with if you are not a trained electrician. If it's your first DIY it might be smart to go with a few smaller drivers instead.
 
GroDank101

GroDank101

Well-Known Member
I definitely want to stick with series wiring, and 8 cobs if I can in the 4x4. I don't mind using 2 drivers if I have to, but hopefully no more than 2.
 
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coreywebster

coreywebster

Well-Known Member
MrTwist1 said:
This type of driver is slightly different. I believe that is constant voltage instead of constant current. I do not use this type, but I believe you must wire in parallel in order to use these. So that 24A would be divided by the number of COBs in a parallel configuration. I think you would need the HLG-600H-42 since the 3590s have a forward voltage of around 36v, but it's probably smart to have a little headroom. @CobKits is the guy to ask about this.

Bear in mind also this seems like A LOT of power to be messing with if you are not a trained electrician. If it's your first DIY it might be smart to go with a few smaller drivers instead.
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Cheers. I was wondering how the hell 24A would work, Parallel, that makes sense now. I think I will stick to series and have more constant current drivers. Cost wise it seems the same.
 
sixstring2112

sixstring2112

Well-Known Member
GroDank101 said:
I definitely want to stick with series wiring, and 8 cobs if I can get away with it in the 4x4. I don't mind using 2 drivers if I have to, but hopefully no more than 2.
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Well you can also run 10 cobs from 2 drivers if you use the mw 185 @1050ma and its a common driver so waaaay cheaper then this mystery 600w driver is lol.
 
nevergoodenuf

nevergoodenuf

Well-Known Member
The HLG600 acts as a CC driver until you draw enough volts to hit the limit ( 24v, 36v, 42v, etc). What is important is the max amps for each voltage, that is what you will divide between the COBs. I would use a heat sink that could easily cool one less COB than you plan on running. That way if you have a loose wire and all the other COB can still handle the heat load. I have never had a problem running in parallel for over 2 years in many different applications.
 
V

voon

Well-Known Member
GroDank101 said:
I definitely want to stick with series wiring, and 8 cobs if I can in the 4x4. I don't mind using 2 drivers if I have to, but hopefully no more than 2.
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Which reasons do you want go only series wiring? Which advantage you have for this? Paralelly wiring has some advantage with compare series wiring..2x HLG-240h-c1750B will be better choice for you,think that.. but power them will be around 100% load on driver, if dou you buy 2x320h-c1750B a little more expensive choice, power them load at 78% ..8xCXB3590@1400mA gived only 579PPFD..8x@2100mA gived 785PPFD and 8x@1750mA will be middle between them..
 
Airwalker16

Airwalker16

Well-Known Member
nevergoodenuf said:
The HLG600 acts as a CC driver until you draw enough volts to hit the limit ( 24v, 36v, 42v, etc). What is important is the max amps for each voltage, that is what you will divide between the COBs. I would use a heat sink that could easily cool one less COB than you plan on running. That way if you have a loose wire and all the other COB can still handle the heat load. I have never had a problem running in parallel for over 2 years in many different applications.
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.... a heatsink that can cool ONE LESS cob in case one goes out? So you mean every heat sink ever? Lol
 
ttystikk

ttystikk

Well-Known Member
nevergoodenuf said:
The HLG600 acts as a CC driver until you draw enough volts to hit the limit ( 24v, 36v, 42v, etc). What is important is the max amps for each voltage, that is what you will divide between the COBs. I would use a heat sink that could easily cool one less COB than you plan on running. That way if you have a loose wire and all the other COB can still handle the heat load. I have never had a problem running in parallel for over 2 years in many different applications.
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One could also use two hlg320 2100 drivers to get similar performance with 8 COBs.
 
D

Demas

Well-Known Member
hi :-) can somebody help me please?
i have in home 2xHlh-185h-c1400 with 2x4 CXB3590. on 2 Bar. now i wont upgrade next 2 bar with 2x4cob bud same watege thats mean 700ma to cob.
My qustion is.
Can I run 2x bar paralel with 4cob(in series) with hlg-185-c1400? mean 700ma to cob? thx to help evrey one. sorry for my english.

edit. one next qustion. my frend order 24xcxb3590 what is the best driver? i look to 2x hlg-320h-36. cob in paralel. 6x cob on one heatsink 11700cm2= 216cm2/heat W temp will by around 50C a thing. it is ok?
 
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Airwalker16

Airwalker16

Well-Known Member
Demas said:
hi :-) can somebody help me please?
i have in home 2xHlh-185h-c1400 with 2x4 CXB3590. on 2 Bar. now i wont upgrade next 2 bar with 2x4cob bud same watege thats mean 700ma to cob.
My qustion is.
Can I run 2x bar paralel with 4cob(in series) with hlg-185-c1400? mean 700ma to cob? thx to help evrey one. sorry for my english.

edit. one next qustion. my frend order 24xcxb3590 what is the best driver? i look to 2x hlg-320h-36. cob in paralel. 6x cob on one heatsink 11700cm2= 216cm2/heat W temp will by around 50C a thing. it is ok?
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Yes you can but cree specifically reccomend not to. But plenty of people have done it here.
 
D

Demas

Well-Known Member
thx for aswer. Do you know why is not recomendet? driver is still constant curent. Is there a possibility that I'd destroyed the COB?
 
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