FLIP CHIP OPTO LUNA 300!!!

welight

welight

Well-Known Member
Thermal Resistance is a critical aspect of led design. The pillar design used in these has become a standard even for star boards to assist in minimal resistance between the junction and the heatsink. The reality is within nanoseconds of firing a led it will hit 25C hence the move to 85C binning, this is a temperature that reflects real world conditions and why most datasheets show a lumen hit between the two. Cree's latest XHP leds like XHP70 provide long term summary data now based on 105 and 125C, they want you to run these new generation leds hotter, why, because you can reduce fixture cost by using smaller heatsinks. Heat remains the enemy and Thermal resistance remains critical in total design consideration
Cheers
Mark
 
ttystikk

ttystikk

Well-Known Member
Alex Lau said:
Hey ttystikk,

We're looking at about 100 lumens/w on 100% and 120-140 lumens/w on 50% on the 2400's.

On the Luna 300, we're looking at about 130 lm/w on 100% and 150 lm/w on 50%.
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Those are very good numbers. I'll be looking forward to hearing more about pricing and availability.
 
bassman999

bassman999

Well-Known Member
Alex Lau said:
Hey ttystikk,

We're looking at about 100 lumens/w on 100% and 120-140 lumens/w on 50% on the 2400's.

On the Luna 300, we're looking at about 130 lm/w on 100% and 150 lm/w on 50%.
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Have you tried any square or rectangular reflectors?
Alot of the bigger grows are 4'x8' rectangular sections

Those are some impressively bright lights!
 
URSA LED

URSA LED

Well-Known Member
bassman999 said:
Have you tried any square or rectangular reflectors?
Alot of the bigger grows are 4'x8' rectangular sections

Those are some impressively bright lights!
Click to expand...
Hi bassman999,

This reminds me. We had a prototype of a rectangular 2400 watt COB, it's still under consideration for future fixture projects, and some automotive projects another team is working on right now. With the right reflector,it would run great for 4'x8' grows.

See picture:
 
SupraSPL

SupraSPL

Well-Known Member
ttystikk said:
That's a lot of light. What's the efficiency level while running them at 50%?
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The 3000K curve looks similar to the 3000-3500K we have been using, based on the height of the blue peak relative to the orange peak so I will use 3000K for this comparison.

From the Apollo 2400 specs, the 3000K is 88lm/W (~27% efficient) at full power 48A (2434W) and 113lm/W (~35% efficient) at half power 24A (1100W).

From the Luna 300 specs, the 3000K is 89.4lm/W (27.6% efficient) at full power 13.3A (646W) and 118.4lm/W (36.5%efficient) at half power 6.65A (304W). If you ran it at quarter power 3.33A (139.4W) it is 139 lm/W or 43% efficient.

Based on those numbers I assume the specs are already factoring in temp droop. Not sure if those lumen ratings are minimum, typical or maximum and there is a discrepancy in vf from the charts and graphs (chart says 45.7vf, graph says 44.16vf), maybe typical vs max vf or it could be cold vf vs hot vf.

If you ran a Vero29 at 3.6A (142W) the efficiency should be at least 35%. Assuming the price of the Luna300 is still $70, the price and efficiency is similar to Vero29. The architecture is definitely geared toward running hard.



Luna300 vs Vero29.png
 
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URSA LED

URSA LED

Well-Known Member
SupraSPL said:
From the Apollo 2400 specs, the 3000K looks the most similar to the 3000-3500K we have been using, based on the height of the blue peak relative to the orange peak. So I think their 3000K would be ideal for flowering. The Apollo2400 is 88lm/W (~27% efficient) at full power 48A (2434W) and 113lm/W (~35% efficient) at half power 24A (1100W).

From the Luna 300 specs, the 3000K is 89.4lm/W (27.6% efficient) at full power 13.3A (646W) and 118.4lm/W (36.5%efficient) at half power 6.65A (304W). If you ran it at quarter power 3.33A (139.4W) it is 139 lm/W or 43% efficient.

Based on those numbers I assume the specs are already factoring in temp droop. It is not specified if those lumen ratings are minimum, typical or maximum.

If you ran a Vero29 at 3.6A (142W) the efficiency should be at least 35%. Assuming the price of the Luna300 is still $70, the price and efficiency is similar to Vero29. The architecture is definitely geared toward running hard.



View attachment 3586206
Click to expand...

Hey SupraSPL,

Thanks for running those numbers.
In the coming weeks we will be updating most of our datasheets as they are way outdated from Q3 of last year.
Since then, we have already switched to a newer version of the chip and we are seeing an increase of 5-10% in output.
 
SupraSPL

SupraSPL

Well-Known Member
Alex Lau said:
Hey SupraSPL,Thanks for running those numbers.
In the coming weeks we will be updating most of our datasheets as they are way outdated from Q3 of last year.
Since then, we have already switched to a newer version of the chip and we are seeing an increase of 5-10% in output.
Click to expand...
Awesome, looking forward to the numbers!
 
bassman999

bassman999

Well-Known Member
Alex Lau said:
Hi bassman999,

This reminds me. We had a prototype of a rectangular 2400 watt COB, it's still under consideration for future fixture projects, and some automotive projects another team is working on right now. With the right reflector,it would run great for 4'x8' grows.

See picture:
Click to expand...
This is interesting, I will be eagerly waiting to see how these come along!
The LES appears to be approx 2" x 11"??
 
nevergoodenuf

nevergoodenuf

Well-Known Member
I have been vegging with one Luna 300 @ around 225 watts in a 3'x4' area with great results. I just got 10 OGs that are 15", I set my 700 watt fixture @ 32" and almost cooked them. I finally was able to compare, with a lux meter, my light against a Gavita at 36". To match the Gavita, my light is at 30". I also finished my 500 watter 2 COB, but I still need to veg more plants to run it. If I can pull 1.2 GPW or more on high, I will keep it the same, other wise I will run 2 COBs @ 320 watts. To tired to post pics. Later.
 
coolbreez1

coolbreez1

Well-Known Member
You guys need to have reusable heat sinks for your grow light market, or similar light sizes so as you improve the technology you allow for the reuse of heat sinks. This way people can simply replace the lights just like traditional lights, makes the products more competitive, and will increase the chance that people will change out there COBs every 2-3 years with the newest technology, good for repeat business. Its the Tesla Elon Musk iterative, scrum approach to technological implementation.
 
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