AtMaDrive is here

I started this a long time ago ( march ) went through many many revisions added features took features away all for what I think is a great driver. It ended up being 12mm x 9mm so very small & up to 1.4Amps output using a single 18650 or 3.7V li-ion that can supply the current. I will be reflowing a few to test for what I think is the last time I will be sending one to tsteele93 to get scoped, I worked pretty hard on this & I hope it ends up being a good driver they can be paralleled but if they are not the same current they will not function as well as two of the same current.
I wil be putting mine inside a host with an osram PL450 to test myself once I get some more wire

Here's a nice picture of the one I will be using in my osram build


I chose a classic green PCB for it







:thanks: for looking


UPDATE ON POT VERSION!

The POT version is coming ever so closer


Time to start the whole testing process again! it's still not close to ready for release untill it's been tested thoroughly... It's 9.2mm x 12mm

Only 3 are being made for this test batch...


Maybe October they will be available by someone...I'm not going to be selling single units of drivers anymore. Only about 1$ more than the previous version and only 0.2mm larger
The pot's are pretty sturdy I've already tried to destroy one as a test ( normal conditions not hitting with a hammer ) and it stood up pretty well its single turn so it's very sensitive you will need a steady hand as its 50mA - 1150mA...


I have high hopes for this version, it will certainly make my life easier without all these resistors & people will have more choices with the current.. Once again it's BOOST only this is NOT a buckboost, but hopefully it's the microboost alternative once this version gets released


:thanks: for looking everyone

Re: AtMaBoost is here

Looking very good. More drivers to play with

We need more info like what reverse voltage protection, overvoltage protection etc.
At what current is heatsink needed for the boost driver ?
And the capacitors look big

Re: AtMaBoost is here

Nice another boost driver option.

What are the heatsinking requirements and how accessible are the components that need to be sinked?

Re: AtMaBoost is here

Blord said:

Looking very good. More drivers to play with

We need more info like what reverse voltage protection, overvoltage protection etc.
At what current is heatsink needed for the boost driver ?
And the capacitors look big

Click to expand...

Oh yes of course

There is no reverse polarity protection, I did that to keep it small & I added & removed that feature numerous times during my versions & decided to not use it.

No overvoltage protection.

So you basically can't messup with this driver or else...

That being said, less places for the voltage to drop = more efficiency so it should be very efficient, I must calculate it still though.

Heatinking is recommended for anything above 900mA but in general I always heatsink them

The capacitors are big for a reason & yes they are bigger values then they should be but that's just to make it as ripple free as possible the black parts on top should all be heatsinked moderately, they are pretty easy to access by cutting a peice of copper/ aluminum to make it even with everything then just thermal adhesive to a bigger peice of metal make sure to not short the caps though!

Re: AtMaBoost is here

Err. I remember you starting the design on this... isn't this the exact same IC as the BenBoost?

Re: AtMaBoost is here

Nice hows the start up ripple on these?

Re: AtMaBoost is here

Wolfman29 said:

Err. I remember you starting the design on this... isn't this the exact same IC as the BenBoost?

Click to expand...

No, I went back to my original plans

I tried each a few times & chose this one


I'm gonna get the ripple tested soon

Re: AtMaBoost is here

Ah. Interesting!

Re: AtMaBoost is here

any chance on a pot

Re: AtMaBoost is here

I made a version with a pot actually

It was 15mm x 10mm too big for my liking so I dropped it

There will be many current choices though

Re: AtMaBoost is here

Shame. Try to get a smaller pot!

Re: AtMaBoost is here

Wolfman29 said:

Shame. Try to get a smaller pot!

Click to expand...

Lol if I could find one in the size I want that won't cost 5$ a pot i'd take it I'll look into it but for this version I'm keeping it as is

Re: AtMaBoost is here

Really? I found one in 2mm x 2mm size that was 0.43$. The new pot I will be using in the BlitzBuck is around $2, but it's a lot more rugged.

Re: AtMaBoost is here

Wolfman29 said:

Really? I found one in 2mm x 2mm size that was 0.43$. The new pot I will be using in the BlitzBuck is around $2, but it's a lot more rugged.

Click to expand...

Really? I'll go look harder then

But there won't be a pot for a bit, maybe another couple months...

Re: AtMaBoost is here

good deal, always nice to have driver options. still waiting for someone to clone a flex that can do 2+A tho....

Re: AtMaBoost is here

Yeah... it's the pot I use on the BlitzBuck currently =p