[WIP] 22mm DD+single-7135 driver / single sided / Dual-PWM / Zener

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mattlward
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I would therefore assume any of the drivers in this series use the same parts + the 7135?

Thanks Matt

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

pilotdog68
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Yes. There are a bunch if extra pads on this one but you can just leave them empty, they aren’t necessary for normal function

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

wight
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pilotdog68 wrote:
Is there really a noticeable difference for any set up? Or is it just a measurable difference?
I think noticeable based on Tom E and RMM’s comments in the A17DD-L thread. See RMM’s post #270 there where he gives a quick impactful example. I think that I’ve also seen another post (either public or private, I forget) saying that a triple XP-L does benefit from the SiR800DP.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

pilotdog68
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I remember reading that our usual FETs don’t like the multiple XHP’s much so I’ve actually used two in parallel before. I hadn’t heard it made a difference in a 3v triple though. I’d love to know how much of a difference it makes. If it gains me 50 extra lumens at max then to me it isn’t worth the cost. If it’s more like 200 lumens, then maybe I’ll change my usual PO.

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

wight
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pilotdog68 wrote:
I remember reading that our usual FETs don’t like the multiple XHP’s much so I’ve actually used two in parallel before. I hadn’t heard it made a difference in a 3v triple though. I’d love to know how much of a difference it makes. If it gains me 50 extra lumens at max then to me it isn’t worth the cost. If it’s more like 200 lumens, then maybe I’ll change my usual PO.
It’s not really the XHP’s voltage which creates the issue (typically higher volt setups will actually be easier on the FET because the higher gate voltage opens the FET more fully). Typically the issue should be the current. So multiple-anything should produce the same issue: high currents.

As mentioned in the other thread, SiR800DP has it’s quirk(s) which must be dealt with. Tom E added a gate pulldown resistor which seems to take care of things nicely.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

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