Lexels driver compilation

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Lexel
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I have also a 20mm Buck driver for L2, likely retaining ring needs to be adjusted in inner diameter

polarweis
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Can it be set for max 5 amp?(flat white)

i’m btw really enjoying my convoy L6 with 8amp driver. Thanks Lexel!

"It wouldn’t be so bright if there wasn’t a shadow every once in a while." - Jason Mraz

Lexel
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Buck drivers get always set to the desired current

when I search for this LED I get only a non 3535 package found

Lexel
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20mm special for C8F 21700

new 1S 17mm version, for e-switch added R_ind and Ind. Pad, 209mil SOIC support

Planned
35mm Haikelite MT02 Boost driver

JasonWW
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How has the progress been with the boost drivers?
Are they still planned for a future release?

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clientequator
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JasonWW wrote:
How has the progress been with the boost drivers? Are they still planned for a future release?

I am waiting eagerly for this boost driver. Right now i order parts to make my own gxb172 but it is good to be able to buy one from you directly!

Lexel
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I hope next year with the apartment finally done and settled I get enough time to do a lot testing on new driver architectures

right now I am still trying to catch up with orders getting the delivery time back to a short one

Yourrid
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JasonWW wrote:
How has the progress been with the boost drivers? Are they still planned for a future release?

I’m still holding out for a 28mm boost driver for my Haikelite SC26. Thumbs Up

Lexel
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17mm Programming Key and new LX

Chatika vas Paus
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Lexel, I have two drivers for MF01 v1 and H03 (3V). Both have narsil, but I would like to have anduril in them. Could you send me the right files so that I can upload them myself?

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What are these 12mm drivers?

Lexel
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some AAA rechargeable lithium battery lights

Lexel
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22 and 24mm AMC drivers for constant current LEDs like 1mm² white flat out now
2 Channel design for low moon
number of max AMCs can be chosen 10 for example are 3.5A

22mm 12+1AMCs

24mm 15+1AMCs

JasonWW
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Lexel wrote:
22 and 24mm AMC drivers out now
2 Channel

12+1AMCs

15+1AMCs


So these are PWM like the FET drivers, but without the FET part of the circuit?
What MCU do they use?
Is it for e-switch?
Uses NarsilM/Anduril?

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Lexel
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Can use 209 and 150mil SOIC8 MCU
supports all firmwares including e-switch
instead a FET a certain number of 350mA AMCs is used plus a single one for moon

Lexel
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As sometimes people ask for scematics I made one

I am also trying another program for more complicated drivers so I did it with KiCad its more powerful but also harder to get used to it

This is for a Bistro HD OTSM driver, OTC not used

3D model from latest design for Lucky Sun BLF light

JasonWW
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Lexel wrote:
As sometimes people ask for scematics I made one

I am also trying another program for more complicated drivers so I did it with KiCad its more powerful but also harder to get used to it

This is for a Bistro HD OTSM driver, OTC not used


Very nice. It really helps me to understand the design quickly. It’s slow trying to follow traces and vias, etc…

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PMed you about L6 driver purchase.

Mike

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I have also made a crowdfunding campaign for the new reflow oven as I will not make the drivers more expensive

https://www.gofundme.com/reflow-oven-for-blf-drivers

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Interesting. I don’t know much about go fund me’s. I’ll look into it.

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Lexel
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22mm D1S white flat

after the first ptototype failed due to PCB bug I can now finally announce I it for white flats running

first Prototype 20mm small LDO and MCU did not work out

2. Prototype of 22mm with D1S specifications works

still a few things to be addressed, like The not tented Viases next to the LED- Pad that are ground, they are there to get heat from MOSFET note spread but should be below mask

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A public “Thank you!” and “Well done!” for the excellent 8A L6 buck driver. I received the replacement xhp70 from Simon yesterday and installed it and the driver with a large spring from BlueSwordM. The L6 is now a close second behind my Chimera for my favorite.

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Lexel wrote:
22mm D1S white flat

after the first ptototype failed due to PCB bug I can now finally announce I it for white flats running

first Prototype 20mm small LDO and MCU did not work out

2. Prototype of 22mm with D1S specifications works

still a few things to be addressed, like The not tented Viases next to the LED- Pad that are ground, they are there to get heat from MOSFET note spread but should be below mask


Nice!
Do you think it would be a good idea to make some future generation that would have FET on MCPCB, compatible with Led4Power’s PCBs?
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I have that board thermally improved a lot filling vises with solder, placing a lot of them from ground plane right next to the FET planes
I guess up to 5-6A should be no problem with that PCB, 2 layer MCPCB would be too expensive

there is no single 20mm MOSLED DTP MCPCB for 3030 LEd that I am aware of
also the driver runs on 2.8V
I need for OTSM with also a diode after the LDO
the MOSFET has to have a low resistance below 2.5V for good reguilation at lower battery level
SIR800, 404 and the Infineon BSC009 have down to about 2V relative constant low on resistance

for LFPAK33 package I need a new MOSFET with similar prroperties

Lexel
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any recommondation what to change?

Chatika vas Paus
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LDO in D1? For what?

Lexel
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Chatika vas Paus wrote:
LDO in D1? For what?

CC FET OPAmp has to compare the voltage over the shunt
relative to to the PWM cycle which gets transformed to a DC voltage
The OPV changes the FET resistance to match both voltages the same

But for a constant max current the PWM voltage needs to be aleways the same amplitude so I have to use a 2.8V LDO

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Got it. Thumbs Up

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Lexel wrote:
I have that board thermally improved a lot filling vises with solder, placing a lot of them from ground plane right next to the FET planes
I guess up to 5-6A should be no problem with that PCB, 2 layer MCPCB would be too expensive

there is no single 20mm MOSLED DTP MCPCB for 3030 LEd that I am aware of
also the driver runs on 2.8V
I need for OTSM with also a diode after the LDO
the MOSFET has to have a low resistance below 2.5V for good reguilation at lower battery level
SIR800, 404 and the Infineon BSC009 have down to about 2V relative constant low on resistance

for LFPAK33 package I need a new MOSFET with similar prroperties


I didn’t mean to suggest switching entirely to FET on MCPCB but rather offering it as an option. LD4B can regulate 12A. And maybe FET removal would enable shrinking the driver so it fits more lights.
Lexel
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why buy it for 800€ when you can hack it in 30 minutes?

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