Hi Neven,
what about your plans for LD-3 for electronic switch?
I use an LD-2 in a flashlight and I want to mod another flashlight with electronic switch.
If there is an LD-3 for electronic switch available soon, I will wait for it.
Thanks
Hello, I am planning to make a flashlight with 4x XHP50.2. I thought I can use 2x 12amp LD-3 dirvers, each driver will power 2 LEDs with 6amps per emitter. I am going to use the same switch for both drivers.
The questions are:
-Is it too much for one LD-3 to power 2 XHP50 leds?
-Is it ok to use one switch to control two drivers?
-I read at the driver info post that using CC mode can cause the driver to overheat. Can someone please explain when overheating can occur? I dont was to use DD because I cant control what max amps are.
Thank you!
Is there somewhere I can see the full list of LED4Power LD series drivers? I find a random selection in stores I shop at, but would like to see the whole offering as they seem to be some of the more advanced drivers.
I could be very wrong, but AFAIK, the only drivers that are made by LED4Power are the LD-1, LD-2, and LD-3, as found here on BLF. Those other “LD-xx” drivers, I think, are not his creation.
Interesting, I had just assumed they were all the same maker based on the naming. My fault.
Hi,
2x XHP50.2 would be too much for LD-3,because of generated heat (P=(Vbatt-Vled)*Iled). Also,when using 2 separate drivers, there is a good chance modes will go "out of sync" over time.
Is it possible that a future version could include code in firmware to keep modes in sync for “stacking” multiple drivers? Maybe a master/slave mode? Then again, wouldn’t the slave board you made for the LD-2 work for this (assuming code was updated to use it that way)?
EDIT: I mean the “bottom” board from your LD-2M driver.
Something like master/slave would be possible. LD-M2 bottom board was for mosfet(good cooling),but LD-M2 was still single-output driver.
I cant use 4 drivers, the cost and complexity will be too high. If I heatsink the drivers do you think it could be possible? Maybe you have a stronger driver that I can use?
Yes, I was thinking if the LD-3 was fully populated, adding the LD-M2 board would effectively double the output, right?
Would this driver be good set at 10 amps with four batteries in series driving 4 x XHP35 (12 Volt leds) in parallel?
@ Kourtinoksylo - currently I don't have stronger driver for 4x XHP50.2
@DavidEF - no,current would remain the same,but power dissipation capability would be greater
@MRsDNF - dissipation would be too high for stock driver.
Thanks led4power. I suppose heat sinks would not help either.
If the FET was taken off the driver PCB and properly heatsinked to the flashlight body it could dissipate lots of heat. I assume the current control would still work with the remote FET. Of course this remote FET setup would require a custom install for each light, but it might be still be a good solution for some.
Dang… So i should have waited…
O well…
Hi,
Hope LD-x4 will be good for “2S” and more S soon.
Thanks for your work.
+1
and 20mm
for bigger diameter there are adapter rings
http://www.kaidomain.com/p/S023828.KD-17mm-Inner-to-20mm-External-Brass-Ring-Driver-Adapter-for-17mm-Circuit-Board-5-pcs
Finally……
LD-3
3A 2S for XHP50.2
2 Thermistor
XHP50.2
40H(2-step) 4000K H4 90CRI
LED Reflow soldering
LD-3 17mm to 20mm
soldering
Smooth light cup
L2
Left：XHP50.2(L2) 、Right：XPL Hi (L2)
All test fine. Great driver.