[Sale] Buck drivers 20, 21, 22, 24, 30mm L6, MF01, MF02/04(S), TN40S/42, BLF GT, Acebeam X45/65

Nevermind it seems his new driver is FET driven.

I think he offers both.

I added to my post above.

Poor guy must stay really busy

on my Buck drivers I went right from the beginning on all with
G Ground
S Switch
L for indicator LED
later LS was added as permenent LED

yes I am too busy to keep track and got no notification that this topic was updated

The new MF02S buck driver has only about 0.2V more voltage drop over a DD driver, but it is limited to 8A from the voltage sense resistors
on the middle currents it gets of course more efficient

anyways 6A is sort of the highest current I would do to a XHP70.2 having very high output
and not going to the limit of the LED where you gain very little brightness with tons of heat

MF02S (originally MF02 XHP70.2 mod) driver is out now a few months
basically there had do be made a few improvements and parts change to get it more efficient
as well get some ringing problem on the LDO fixed that occured on higher currents

MOSFET was changed to a far better one
less voltage drop 5.5 vs. the old 12.8mOhms,
It has 1/4 of the switching losses as it switches faster
I could go up in switching frequency a lot which was reduced on the first XHP70.2 mods
total loss compared to old 1/3

Inductor value cut to half now 2.2uH with new FET and resistance as well (XHP35 has 10uH, old XHP70.2 4.7uH)
Output and Input caps sustained to handle the more current

If i sent you a MF02S, could you install the new lexel buck driver for me?

Can you measure the efficiency of the driver in some sensible setting?

Let me give it a try as I modded today for someone else a MF02S

I am bad at making videos but I post it anyways

actually the PSU voltage meter uses calvin clamps so its reding on contact points on driver to compensate losses on the wires, even if they are 2.5mm²

Measurements

Turbo (measure 3 times and used average later as in video the clamp meter was not prcise)
Input: 15,15V 5.4-5,44A
Output: 13,44-13,51V 5,70-5,74A
Efficiency: 94,4%

I also changed the calibration resistor to get to 6.09A later and did again 2 measurements
15,11V 5,8A
13,6V 6,09A
94,5%

fully charged VTC6 should give this voltage
16,17 5,37A
13,55V 6,04A
94,25%

2A
Input: 15,73V 1,766A
Output: 12,06V 2,12A
Efficiency: 95,5%

500mA switching frequency is over 1 Mhz as outout voltage low and input high
Input: 15,94V 415mA
Output: 11,2V 502mA
Efficiency: 85%

Thanks!

I would like to mod my L6 with a new type Osram KW CSLNM1.TG LED.
In this LED the thermal pad is electrically neutral, this means there is no need for LED PCB/driver GND isolation.
Max suggested current is 5.75A (Vf~3,40V)

Will it work with this buck driver?

Sure 2S 3V buck driver with desired current possible

I did some testing today

with the usual 12V XHP70.2 driver setup I can drop the input voltage on the driver down to 13.6V before we drop output below 6A to the LED

Where can I buy driver for my astrolux mf02 ?

Please where can I buy a driver for my astrolux mf02 .link pleaseee?

I’d like 2 of the BLF GT Oslon drivers…

You are at the right place. Lexel makes them himself. He will contact you in the next day or so. Maybe today.

Ok thanks

Any buck driver for the D4S?

not possible for that light, the driver cavity is too shallow and there is no high current buck atm

V2 MF01 prepped for Buck driver

Hi Lexel,
ich würde gerne einen Black Flat Treiber für die BLF GT kaufen.
Merci