Led4power.com : LD-4 CC linear drivers, ILC-0/1 illuminated tailcaps, optics, MOSX, copper DTP MCPCBs...

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led4power
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i42dk wrote:
led4power wrote:
Lower current moonlight modes are possible, moonlight is dependent on two small (0402) resistors, so without hot-air and steady hand it's hard to do for most people, but if you want custom low current moonlight, please leave a note during future orders,and I will change resistors.
Well well well, you have yourself another order coming soon Big Smile So what mA should the target be? Perhaps someone else can chime in. My benchmark is the ReyLight Pineapple's moonlight mode, or the BLF Q8 Narsil moonlight level 2/7

 

Just one note: you can choose two moonlight currents, third current is I1 + I2 (default I1=2.5mA, I2=5mA, I3= 2.5+5=7.5mA)

For example you can have I1=1mA, I2=2mA, I3=3mA etc.

i42dk
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led4power wrote:
Just one note: you can choose two moonlight currents, third current is I1 + I2 (default I1=2.5mA, I2=5mA, I3= 2.5+5=7.5mA)

For example you can have I1=1mA, I2=2mA, I3=3mA etc.

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alberto7 wrote:
What about 32mm 3x 3535 Mosled board with Fet and temp conexion? I think it will be popular for x6,c8 and others builds. I will I would buy a couple of pieces, for sure.

 

I will do that in next mosX batch, plan is to make 31.2-31.5mm (to fit EE X6 without sanding) MCPCBs for triple CUTE-3 and quad CUTE-4 35mm optics, with central hole of course, and with 3535 and 4040 footprints.

Also I want to make 30mm mosx triple 4040 for Sofirn C8F, triple reflector on that light is great.

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led4power wrote:

I will do that in next mosX batch, plan is to make 31.2-31.5mm (to fit EE X6 without sanding) MCPCBs for triple CUTE-3 and quad CUTE-4 35mm optics, with central hole of course, and with 3535 and 4040 footprints.


Also I want to make 30mm mosx triple 4040 for Sofirn C8F, triple reflector on that light is great.

Good news Neven! Continue the great work Wink

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led4power wrote:
I will do that in next mosX batch, plan is to make 31.2-31.5mm (to fit EE X6 without sanding) MCPCBs for triple CUTE-3 and quad CUTE-4 35mm optics, with central hole of course, and with 3535 and 4040 footprints. Also I want to make 30mm mosx triple 4040 for Sofirn C8F, triple reflector on that light is great.

Triple 4040 for X6 triple would be great, in fact I’m going to put my next X6 triple project on hold now that I know it’s coming. I’m wondering if luxeon MZ is compatible with CUTE-3-SS? For sure it must work nicely with CUTE-3-W and CUTE-3-M.

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I would also be in for a cute3 4040 board

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1C3 wrote:
Triple 4040 for X6 triple would be great, in fact I’m going to put my next X6 triple project on hold now that I know it’s coming. I’m wondering if luxeon MZ is compatible with CUTE-3-SS? For sure it must work nicely with CUTE-3-W and CUTE-3-M.

Me too, the c8 triple its on hold, and now it will be Quad C8. The existence of CUTE-4 had gone unnoticed for me.

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Right, I didn’t even think about the CUTE-4.
Now I’m thinking about the crazy amount of current a quad fet-driven Luxeon MZ will pull with the super low vf, we might be getting to the point were the small 1288s will finally start melting Crazy .

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1C3 wrote:
Right, I didn’t even think about the CUTE-4. Now I’m thinking about the crazy amount of current a quad fet-driven Luxeon MZ will pull with the super low vf, we might be getting to the point were the small 1288s will finally start melting Crazy .

I have been thinking something similar. I have a Cryos m2 cooling bezel (p60 head with a lot of deep fins) which has never really stretched its legs. 30A sounds nice with a Samsung 30T :D.

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The_Driver wrote:
1C3 wrote:
Right, I didn’t even think about the CUTE-4. Now I’m thinking about the crazy amount of current a quad fet-driven Luxeon MZ will pull with the super low vf, we might be getting to the point were the small 1288s will finally start melting Crazy .

I have been thinking something similar. I have a Cryos m2 cooling bezel (p60 head with a lot of deep fins) which has never really stretched its legs. 30A sounds nice with a Samsung 30T :D.

I am constantly searching for a source of 30Ts on web but so far I haven’t found anything except one company located in India that is specialized for electric vehicles.
According to their website they stated having 30T in minimum oreder quantity of 100 cells. I haven’t contacted them and don’t know if some of us forum guys did. I was thinking on idea of group buy but I doubt this cell will be accepted buy people at current time due to absence of lights/ hosts that would accept them or ones that could be bored to accept them not counting 26650 lights. Maybe those vapers would jump in but I am not in that scene.

Edit: Seems like Voltaplex have them in stock with minimum quantity of 50. Hope? Love

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The_Driver wrote:
1C3 wrote:
Right, I didn’t even think about the CUTE-4. Now I’m thinking about the crazy amount of current a quad fet-driven Luxeon MZ will pull with the super low vf, we might be getting to the point were the small 1288s will finally start melting Crazy .

I have been thinking something similar. I have a Cryos m2 cooling bezel (p60 head with a lot of deep fins) which has never really stretched its legs. 30A sounds nice with a Samsung 30T :D.


M2 Cryos head with what battery tube/host? Most can’t be bored to 21+mm….. the threads on my 5Mega host at the tail cap measure 21.76mm. http://www.cryosillumination.com/

KB1428 “Live Life WOT

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I don’t know yet, maybe a custom battery tube would need to be made. That would actually be a better solution anyhow because I could skip the p60 pill (bad for heatsinking) and integrate the heatsink into the battery tube.

Such a tripple might actually pull too much current though pushing the LEDs past their maximum brightness.

BTW: Samsung 35T are already listed here.

vinte77
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Can somebody post a link for the MZ 90CRI 3v 5700K from digikey? I can’t seem to find the correct one.

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vinte77 wrote:
Can somebody post a link for the MZ 90CRI 3v 5700K from digikey? I can’t seem to find the correct one.

Digikey
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Those Luxeon MZs are definitely rather expensive for such small LEDs.

led4power wrote:

25A without problem. Power dissipation in that case is 3-3.5Watts, this is no problem on any mcpcb. On the other side 3+ Watts on driver’s FR4 pcb would cause melting if there is no additional thermal path (silicone cubes etc.). Internal uC temp. sensing would be pretty much useless for thermal regulation/stepdown.

Since max power dissipation is 15W for the FET on the LED PCB, the max current should be much, much higher than 25A? Which FET are you using? What is the internal resistance when it is “on”?

Also, would it be possible that you offer a FET-based switch like this ? It makes a lot of sense for DD lights.

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PH_Oton wrote:
vinte77 wrote:
Can somebody post a link for the MZ 90CRI 3v 5700K from digikey? I can’t seem to find the correct one.

Digikey
Mouser

Thanks!

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Just place an order for the Lux V. Thanks!

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The_Driver wrote:
Those Luxeon MZs are definitely rather expensive for such small LEDs.
led4power wrote:

25A without problem. Power dissipation in that case is 3-3.5Watts, this is no problem on any mcpcb. On the other side 3+ Watts on driver's FR4 pcb would cause melting if there is no additional thermal path (silicone cubes etc.). Internal uC temp. sensing would be pretty much useless for thermal regulation/stepdown.

Since max power dissipation is 15W for the FET on the LED PCB, the max current should be much, much higher than 25A? Which FET are you using? What is the internal resistance when it is "on"? Also, would it be possible that you offer a FET-based switch like "this":http://www.candlepowerforums.com/vb/showthread.php?296127-The-quot-FETti... ? It makes a lot of sense for DD lights.

 

MZ leds are not small at all, at least not by total die size area,which is ~8mm2 - they are equivalent to non-existing XHP50(.2) HI.

On mosX boards mosfet can handle a lot of power, more than 25Amps is it works in DD mode, I use PSMN2R4 mosfets in lfpak33 package.I agree that 1288 switches are not enough these days.

 

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led4power wrote:
MZ leds are not small at all, at least not by total die size area,which is ~8mm2 – they are equivalent to non-existing XHP50 HI. On mosX boards mosfet can handle a lot of power, more than 25Amps is it works in DD mode, I use PSMN2R4 mosfets in lfpak33 package.I agree that 1288 switches are not enough these days.

They cost twice as much as the XHP50.2.

led4power wrote:
On mosX boards mosfet can handle a lot of power, more than 25Amps is it works in DD mode, I use PSMN2R4 mosfets in lfpak33 package.

Thanks. So it has a typical resistance of 2.6mOhm (max 3.2).
I’m not sure how to read the datasheet regarding maximum current. 70A seems to require a high voltage?

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The_Driver wrote:
They cost twice as much as the XHP50.2.

MZ 3 years old LED, at that time 8mm^2 of die area for 7-8€ was ok price.

The_Driver wrote:
  Thanks. So ist has a typical resistance of 2.6mOhm (max 3.2). I'm not sure how to read the datasheet regarding maximum current. 70A seems to require a high voltage?

On mosX it can handle enough current for any flashlight application, other components are usually more challenging at 20+Amps.

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1C3 wrote:
I’m wondering if luxeon MZ is compatible with CUTE-3-SS? For sure it must work nicely with CUTE-3-W and CUTE-3-M.

By looking at the datasheets of both it should be reasonably compatible. Luxeon MZ light emitting area seems to be around 3×3mm, which would mean around 4.25mm diagonal. CUTE-3 bottom hole diameter is 4.4mm according to the datasheet, so it would work but for best efficiency the optics would probably have to sit lower than the default.
I haven’t checked if CUTE-4-SS bottom holes are the same but I would guess they are.
CUTE-3-M is basically the same optic as CUTE-3-SS but with a stronger honeycomb pattern.
CUTE-3-W seems to be shaped differently and have wider bottom holes, I guess it should provide the best compatibility but it will have basically no throw.

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There are few versions of CUTE-3-SS and 4-SS, and they have different tir shapes, for ex. XR versions have bigger entrance holes and smaller tir area.

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For those of us looking for e-switch drivers, do you still have LD2’s?

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No, LD-2/3 are not available anymore.

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I finally tried 0805 RGB slow flashing LEDs on ILC-0 to see if they work. I think djozz is the first one that tried to use them in illuminated tailcaps: RGB tailcap flash

Problem is RGB flashing LEDs draw too much current with low resistor values, and with normal bleeder values LEDs spend quite a bit of time in red only mode, and stay almost 100% of time in red when battery voltage drops below 3.8V or so.

ILC-0 RGB actually works nicely, but only when used in combination with LD-x4's bleeding which limits current to ~1mA max. with fresh battery. With 380Ohm resistor bleeder, it works but tailcap is too bright (2-3mA) and spends a lot of time in red mode after some time, and usually most leds have similar transitions.

With ILC-0 RGB + LD-x4 bleeding colors become random for each LED after few minutes which looks great, and tailcap doesn't stuck in red mode.After 12hrs test it still works the same way. Below ~3.8V blue becomes more rare, and below ~3.5V green appearance is also more scarce, so when battery is nearly empty red is dominant - nice "self-made" feature. Below 3V ILC-0 goes to sleep like any other ILC-0 and consumes 1.2uA, so battery is safe from over-discharging. 

Random color mix looks really nice,but it's hard to capture it without good camera, here is one capture with non-pro camera(colors in reality are much more saturated):

 I'll try to make a video tonight with two tailcaps, one with LD-x4, other with resistor bleeder.

 

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Few videos:

 

In this video tailcap on left is in light with LD-x4 driver vs. light on right with 380Ohm resistor bleeder:

 

After few minutes light with resistor bleeder doesn't really works, it's mostly in red mode for a long time, with occasional short green color appearance, blue doesn't show up at all even with fresh battery.

 

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led4power, did you consider making complete LED engines with LEDs and driver on a single DTP board?

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Agro wrote:
led4power, did you consider making complete LED engines with LEDs and driver on a single DTP board?

For like a light fixture or something? Curious what is the purpose of that.

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Flashlights.

Frankly, sometimes I’m just throwing ideas around to see if they resonate. This is one of the cases.
We know that some light makers do light engines like that.
But all that I’ve seen use non-DTP boards for that.
It seems to me that the led4power tech would be better in this regard.

Such use has a number of benefits, but also creates some problems.
And even if it makes technical sense, for almost all hosts it won’t be significantly better than separate board because they already have space for such board. But maybe there are benefits other than size? Or maybe there’s a market that I don’t see?
I’m curious what people, especially led4power, think about it.

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It definitely has it’s use in some lights. Not sure about the market value for someone to make them though, to me it seems more a custom job for specific lights.

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