Driver for one xml2 at 6 amps and 2x18650 in series

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marruz
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Driver for one xml2 at 6 amps and 2x18650 in series

Hi, I have been looking for a way to run 1 xml2 on copper with 6A current. I want to run this led for longer then just a few moments before the battery goes bellow forward voltage of the LED at 6A. For this reason I want to use 2×18650 in a series and I modded my Small Sun ZY-T08 for this purpose. Now I am looking for the best driver for this purpose. I would like to use something like a moded nanjg 105c driver with programmable Attiny13a. Is there a way how to mod this driver to work on 2×18650 in series and one xml. Or which driver would you recommend? Thanks.

pilotdog68
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The closest thing to what you’re asking is the MTN-MAX buck driver from mtnelectronics.com. The problem is that it needs direct mounting to handle the heat, so it might fry if stacked in your T08.

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marruz
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Thanks for a nice suggestion. Looking at the description of this driver, I think that 6 amps is too dangerous for the emitter. I found this one on MTNelectronics: http://www.mtnelectronics.com/index.php?route=product/product&path=67_11.... However it is out of stock. Do you know about a similar driver for the same or lower price from other sources ideally with free shipping?

Well the best one would be with programmable Attiny but I guess it does not exist. Maybe I could use 105c for that but I would need to use the zener diode not only for MCU but for the whole driver. If this diode lowers the voltage to forward voltage of xml2 at 5a, I guess it might work. However I am afraid the zener diode might fry. What do you think?

One more question, how long does an xml2 with normal 5a moded nanjg 105c and two 18650 in paralel stay on highest output before it goes down for lower voltage?

MRsDNF
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Theres also this driver. Read down a bit for the two cell version.

http://budgetlightforum.com/node/39673

 

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

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LSX
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MRsDNF wrote:

Theres also this driver. Read down a bit for the two cell version.

http://budgetlightforum.com/node/39673

I don’t think the LD-2 bucks the voltage down does it?

I thought the 2-cell version is for 6V emitters?

Kenjii
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Hi,

you could use this Driver: http://www.lck-led.com/26mm-9000ma-driver-modes-sst90-p-863.html?cPath=135

It comes as 9A Driver but you can easily modify it to 6A by taking down 3 of the 9 sense resistors.

Greetings

Kenjii

MRsDNF
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I'm not sure LSX. If it is thanks for pointing it out.

 

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

                      "My man mousehole needs one too"

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

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

ImA4Wheelr
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Hi marruz.  The HX-1175b1 is a 32mm buck driver designed to deliver 7amps stock.  It can be resistor modded to deliver less.  It does not have an Attiny13a MCU, but you could air wire one onto it.

 

They can be had for $10/each in a set of 2 here:

http://www.topledlight.com/led-driver-input-3v18v-for-phlatlight-luminus...

 

HX-1175b1 thread:

http://budgetlightforum.com/node/31914#node-31914

marruz
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Thank you ImA4Wheelr for a nice tip. In most places it is either a little too expensive for me or in packs of 3.