Cree XHP70 up to 4022 Lumens and XHP50 up to 2546 lumens - Multi-die leds.

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scottyhazzard
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DBCstm wrote:
I’ve got 3 XHP50’s on Noctigon stars pushing 9522 lumens out the front from 8 Efest IMR18350 cells. No blue light.

Holy cow! That’s gotta be like an aircraft landing light!

"Those who hammer their guns into plows will plow for those who do not."

Jubeldum
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DBCstm wrote:

They both come with black plastic holders, the Minnie’s holder already has an adhesive tape on the bottom. The Iris fits in the X6 beautifully without the holder…the holder is tapered at the wide end and would probably go in with a small amount of sanding at that leading edge, that would probably be the ideal way to use it. The large opening in the optic fully surrounds the entire die, sitting on the substrate without the holder.

The Iris is almost $10 from Mouser, the Minnie-M is a little over $5.

Ahhh, how could I forget to post this? 3550 lumens, up from 3298 with the Mirella. 3305 at 30 seconds. Smile And a nicer beam to boot! This is with Wights PZL driver, a 7135 regulated chip driver. I, uh, might’ve stacked a few extry…

Edit: It’s pulling 5.45A at the tail.

The XHP’s are almost here and nobody has the Iris in stock. :_(

DB Custom
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Have you tried Arrow Electronics? They usually have a large inventory and are quick to ship, good or even excellent pricing as well.

They say they have 3 of the CA10908 that is supposedly designed for an Osram, bet it’ll work for the XHP as well.

Jubeldum
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This is what I wanted. Or is the one you suggested a better reflector for the XHP70?
https://parts.arrow.com/item/detail/ledil-oy/cn11770-iris#2nng

CN11770_IRIS

djozz
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I tested the XHP70 again last night, now mounted on a XHP70 Sinkpad, with the romantically wandering traces avoided by scratching some masking away, does not look pretty but it works alright. What is most important is that the thermal path of the middle pad has improved compared to my makeshift board using a XM-L Sinkpad and copper bits.

It is the exact same led as the first test and I plot the results together the makeshift board results because that is pretty interesting: at high currents this led really wants a good thermal path:

As you can see, the led has suffered somewhat from the 15A treatment of the first test: the output is a tad lower and the voltage a bit higher. But over 6.6A that effect is taken over by the better thermal path of the XHP70 board. It maxes out now at 11-12A.

Still my numbers are very low compared to Dale's numbers, so after cooling down I did some quick tests that were done more like how Dale measures with his flashlights: still the board was on the copper mount but there was no active cooling (fan out), and I went straight to the target current (I tested 8A and 12A), then looked for 1 minute every 10 seconds at the light output:

8A  0 seconds5340
8A  10 seconds5280
8A  20 seconds5230
8A  30 seconds5190
8A  40 seconds5140
8A  50 seconds5100
8A  60 seconds

5050

 

12A  0 seconds6631
12A  10 seconds6258
12A  20 seconds6164
12A  30 seconds6024
12A  40 seconds5838
12A  50 seconds5744
12A  60 seconds5557

That helps! apparently at very high currents  there is a noticable difference between measuring at 30 seconds and measuring at 'steady state' like I do in my tests. These numbers look a bit more like Dale's, and any difference leftover I am willing to explain by different calibrations or differences within a led bin , or he used a different bin. And my led was already tortured, as can be seen in the graph above.

To get the maximum out of the led I turned the current from zero to 15A in a moment and for a nanosecond I measured over 7000 lumen.

DB Custom
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My numbers were from an actual light build, reflector, lens, batteries, real world. So you’ve proven that the losses compute and the emitter is capable of some very serious output. Thanks Jos! :bigsmile:

I was beginning to wonder if that test of mine had been a fluke or something. Wink

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Jubeldum, you might give SinkPAD a shout out as they are a licensed Ledil dealer and have the Ledil District Manager in house. Wink

Send an email inquiring as to availability of that part number to abdul.aslami@ledil.com

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15A power supply!  That's pretty sweet.  I have had mine go up over 10A before, but it's only rated for 10A so I'm not sure if something will break or go nuts if I push it that hard.  I have used a buck converter to push the MT-G2s over 13A with the power supply at a higher voltage, but not direct drive.

Looks like after 9A-10A you're not getting much more output. 

Mountain Electronics : batteries, Noctigon, and much more! What's new? 

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My XHP70 leds came today!  LEDDNA sent me 10 of the 5000k XHP70 N4 3A leds. I already have the mcpcbs and the patients waiting on surgery, so it's going to be a long week-end. Billy did a great job of getting them out and they were packaged well and arrived quickly.

x70a

x70b

x70c

The four up is a light that used to be 4xP7 leds. Now it will be 4xXHP70 leds in series, with one of George's HBFlex drivers and a 6D Maglite with 5x26650 cells in it. 3 amps per led.

The other light is the SP03 and it will have 3xXHP70 leds at nine amps each. Well, maybe... I think it will have a custom FET driver in it, done by RMM. Not positive yet, maybe a 7135 driver.

That leaves me 3 leds for some Maglite mods.Wink

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djozz
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RMM wrote:

15A power supply!  That's pretty sweet.  I have had mine go up over 10A before, but it's only rated for 10A so I'm not sure if something will break or go nuts if I push it that hard.  I have used a buck converter to push the MT-G2s over 13A with the power supply at a higher voltage, but not direct drive.

Looks like after 9A-10A you're not getting much more output. 

I use a simple but very decent lineair power supply that goes up to 20A Smile , but only at 16V.

cajampa
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Thanks for that testing djozz, i have been wondering why Dale numbers is often higher, but the differences between your usual testing in steady state slowly ramping up the output and in flashlight blast at full power directly like he does it explains a lot.

DB Custom
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O-L, do you plan do diffuse the reflectors to help eliminate the donut hole? Wondering if you’d use your patented clear overspray technique. Been thinking about that…

LEDDNA is pretty quick, and they had bins not available elsewhere. Rock on!

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I don't know yet, if I have to, I will. I plan on doing some testing with a few reflectors I have laying around and see what happens. I plan on doing one led raised off the star surface, with copper, so I can try some different heights of reflectors, to see what effect the it has and see if there is any way to minimize the X mark. I will post the results, with photos.

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Thanks Djozz, very useful graph as always! Seems like 10A is a pretty decent spot to run these LEDs at.

Would it be possible to also measure the heatsink temperature in your usual test? As it seems to have such a large effect on the output it would be interesting to see how the heatsink temp ramps up in relation to the the current ramp.

Jubeldum
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DBCstm wrote:
Have you tried Arrow Electronics? They usually have a large inventory and are quick to ship, good or even excellent pricing as well.

They say they have 3 of the CA10908 that is supposedly designed for an Osram, bet it’ll work for the XHP as well.

I don’t need 90 of them. I only need one. Flat Stare

“Thank you for your quote request, unfortunately I don’t have immediate stock.

Please do note, the factory MOQ is 90.

If you would like me to send in for a quote, I will need the following:

your company name and address
end customer name and location
project name
annual usage

Best Regards,
Hang Tra

Hang Tra
Arrow eCommerce Support”

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10861

173 in stock, ready to ship. One at a time or however you like. Smile

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Can anybody guess what 3 XHP70’s do on a A17DD-S08 driver with a high end Toshiba MOSFET?

SupFire M6? Almost dead cells even? (8 Efest IMR18350 Purple)

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:bigsmile:

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Just a stab in the dark here. 9522 OTF?

 

djozz quotes, "it came with chinese lettering that is chinese to me".

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old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

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cajampa
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What high end Toshiba MOSFET?

I don’t remember any talk about a toshiba MOSFET only NXP or Vishay ones.

And i guess over 10000 Big Smile

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DBCstm wrote:
Can anybody guess what 3 XHP70's do on a A17DD-S08 driver with a high end Toshiba MOSFET? SupFire M6? Almost dead cells even? (8 Efest IMR18350 Purple)

G'Day Dale,  Smile

 

I am guessing about 15,000 to 18,000 Lumens OTF (with fully charged 8 Efest IMR18350 Purple)....

Btw, I want one of those.....  Wink

 

Best Regards,

George

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When I first tested it the cells were at 3.95V, almost dead, after the lightbox run. I didn’t run it just tested it. The first reading I got was 12,523 lumens.

So of course I charged the little cells!

13,903.5 lumens out the front, even low does 1408.

I lined up the emitters such that the line between dies pointed towards the middle. This put them diagonal to each other. And the donut hole is there at low, but decreases as the brightness goes up. Turbo is a stupid amount of light!

These are the 6500K variant, the first ones out.

This Toshiba is a new release, it has a plate on top like the one on bottom that solders to the driver. This is supposed to help with heat. It’s rated at 150A, 30V.

Can’t help but wonder what a good set of top end 18650’s would do….

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Full out belly roll laughter! Damg, my face hurts! :bigsmile:

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:bigsmile: Wink 0:)
cajampa
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What is the exact name for the toshiba? so i can check if it is available on stores thats available to me like farnell.

But it still is a LFPAK56 sized FET? have there been any discussions in any thread’s on it here on BLF?

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I saw it when in announcements when I was looking for something else, looked good, bought 5 of em. $3 each.

TPWR8503NLL1QCT-ND

I have no idea if this performs any better than the SIR800 or PSMNO9R or anything else. I’ll be using the SIR800 mostly now but thought I’d try this out. Wink

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That FET might actually do better on a driver like the LD-1.

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cajampa
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Thanks i found it, i guess i buy some of the various like the SIR800 & PSMNO9R because farnell don’t got it yet.

I hope one our spec gurus like wight, comfy or Rufusbduck will weigh in on if TPWR8503NLL1QCT-ND is a good option, i have a really hard time wrapping my head around the spec and the math comparisons on MOSFETs……

EDIT and here he comes….. Smile thanks Rufusbduck

Would you say the SIR800 & PSMNO9R should still be the better options?

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DBCstm wrote:
When I first tested it the cells were at 3.95V, almost dead, after the lightbox run. I didn’t run it just tested it. The first reading I got was 12,523 lumens.

So of course I charged the little cells!

13,903.5 lumens out the front, even low does 1408.

I lined up the emitters such that the line between dies pointed towards the middle. This put them diagonal to each other. And the donut hole is there at low, but decreases as the brightness goes up. Turbo is a stupid amount of light!

These are the 6500K variant, the first ones out.

This Toshiba is a new release, it has a plate on top like the one on bottom that solders to the driver. This is supposed to help with heat. It’s rated at 150A, 30V.

Can’t help but wonder what a good set of top end 18650’s would do….


I wants it! I wants the precious!

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DBCstm wrote:
. And the donut hole is there at low, but decreases as the brightness goes up.

I put that down to your retinas catching fire Wink

Very impressive looking FET btw, the RdsON graph is solidly at 1mOhm for our usage range. Low threshold voltage as well, looks really good to me.

Is the “thermal pad” on top electrically connected to any of the other pins? I can’t find any info on that in the datasheet.
Cheers

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