I was about to update my 1st reply with some measurements but I decided not to because it would bother you. I couldn’t delete the post either because it would mess up the table of contents so I decided to abandon it. No offense intended, I was just playing around.
So put the updates in the first post, not the first reply, and nothing gets messed up. What's the fascination with putting the updates in the first reply, anyway? How is that any less effective than putting it in the OP? If you want everybody alerted, make a new post at the end of the thread where the new stuff is supposed to go anyway, saying "updated info in OP" or whatever, then a round of notifications go out, people see the new post at the end, and then go back and look at the OP. It works just fine like that on every other forum on the planet.
Thanks again ryansoh3. I guess I have seen images of that side of the driver. Even in this thread at Post 154. Just didn't realize it. Looks exactly the same as far as I can tell.
Look forward to seeing the other side. Maybe it will help us with this driver. Thank you again.
Here are some shots of the driver. I couldn’t find my lens extension tube, so the quality isn’t too great. :~
They are very high res, so click on the link for fullscreen+ sizes.
Sweet. Thank you very much ryansoh3.
So that driver drives 3 emitters in series in the TN30?
Yup, 3 XM-L2’s in series for a total Vf of 9-10.5V. Current is 3.0A at level 6 I think.
It’s a very nicely regulated driver that can drive a laser diode at 5.0V @ 2.4A.
Visually, it's strikingly similar to the K50 driver. The obvious visible difference is the 2 major capacitors are huge and there is that diode on the TN30 driver. There are a couple extra small caps at 5 o'clock. Didn't compare resister values. Here is a mouse over.
Wish I knew enough about electronics to tell if the K50 driver could be easily moded to higher voltages.
Can someone make a single post with the various similar drivers, what their input config is, and what their LED config is? I don't know any of these lights well enough to go back and track down each different version and keep them straight well enough to figure any of it out.
Single Emitter Lights
table(table#posts).
|Light|Input|Output|
|K40|3x li-ion|1x XM-L2|
|TN31|3x li-ion|1x XM-L2|
|TN32|3x li-ion|1x XM-L2|
|K50 V2|4x li-ion|1x XM-L2|
|TN35|3x li-ion|1x MT-G2|
|K40M|3x li-ion|1x MT-G2|
Multi Emitter Lights
table(table#posts).
|Light|Input|Output|
|TN30|3x li-ion|3x XM-L2|
|X40|3x li-ion|3x XM-L2|
Here's a better aligned mouseover:
Are there good pics of all those drivers to help nail down exactly what's different between the ones that will output more than ~4 volts and the ones that won't?
Not that I'm aware of, but I have compared some pics of the TN31 and K50 V2 and they appear identical (didn't compare individual component values) except for the mod to the sense resistor bank.
Nice mouse over enhancement CC. It appears that the traces are the same.
I’ve sent an email to Bella to forward the driver conundrum to the engineers at Supbeam/Acebeam.
We’ll see what she says.
Is there a buck controller on the board anywhere? Or is it all done in the PIC? Could it be a firmware thing? TN30 & K50 both use the same 16F616. I can't see the markings on the little 5-leg things well enough to figure out what they are, those are the only other possibility for being a buck controller I can see on either side.
Thanks ryansoh3.
In you table above. Is the TN32 an xml2 light?
EDIT: It is. It's the TN35 that is MT-G2.
It reads C2KV on my TN30 driver, but my Google-fu isn’t strong with this one.
What’s the package format of the 5-pin component?
Yup, XM-L2.
I forgot to add the TN35, which has a MT-G2 emitter.
Single Emitter Lights
table(table#posts).
|Light|Input|Output|
|K40|3x li-ion|1x XM-L2|
|TN31|3x li-ion|1x XM-L2|
|TN32|3x li-ion|1x XM-L2|
|K50 V2|4x li-ion|1x XM-L2|
|TN35|3x li-ion|1x MT-G2|
|K40M|3x li-ion|1x MT-G2|
Multi Emitter Lights
table(table#posts).
|Light|Input|Output|
|TN30|3x li-ion|3x XM-L2|
|X40|3x li-ion|3x XM-L2|
I’ve grouped the drivers that I think are identical except for current sense resistors (0.5-1.0A difference):
XM-L2 low current K40/TN31
XM-L2 high current TN32/K50 V2
TM-G2 TN35/K40M
The TN30 and X40 are identical except the fact that the X40 is infinitely variable.
These two:
One at the left clearly goes to the FET gate, so that's most likely (though not necessarily) a gate driver; the other one is the main suspect, I think.
Package size... SOT-23-5? They're basically same size as the mag sensor chips and the tiny little FETs right? So smaller than a 7135 (SOT-89).
Whoops, I was looking at the wrong side.
My TN30 reads 8NDE on the left and SB6Y on the right.
Thanks Ryan. I Goggled and edit cross posted with you.
I did some Goggling, but I can't find any good images of the TN35 and K40M drivers.
EDIT: Thankfully, it appears that the answers may be in the images that Ryan provided. Well, that combined with people smarter than me.