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the driver does work on car battery voltage range but I cannot know if it is rated for automotive performance. the best effieciency is ~92% and worse is ~81% depending on the input/output voltage difference here are some numbers i just took: [IN] - 1.55A x 8.4V [OUT] - 2.56A x 4.11V [EFF]...

there could also be small value resistors in larger sizes ;)

I sent you a PM :beer:

FINALLY! I FOUND THE SOLUTION! Forget about the bleed resistor! this is a full-proof permanent solution. the input cap must be changed with a 10uF 16V X5R/X7R cap. originally I used 100uF cap supposedly to make things smoother but IT WAS the problem! It cannot discharge this fast when...

Hold on to your horses guys, if you haven't ordered a resistor yet don't I may have found the solution of the fault!!!!!! will post in an hour or so!!!

THE ISSUE HAS BEEN RESOLVED! check this post! http://laserpointerforums.com/f67/idrv3-new-3a-buck-driver-82365-2.html#post1186344 :beer: no more spikes!

All packages shipped, tracking number in your messages ;) :beer:

good night folks, phenol - I will assemble yours tomorrow as I still haven't received the current you want :D all other packages are going to be send tomorrow, following by tracking number in your LPF inbox :) :beer:

All samples are ready, tested and packaged. Shipping - tomorrow!!! phenol - yours is still waiting for the current setting , check your PM already!! :D Sorry for misleading those of you who wanted 2.45A current. It is actually 2.4A !!! Hope that's ok?! :)

ok I guess it's a tie here so I would give one more. to both phenol and cchih and no more free samples :D --------------------- samples will go to: -------------- awillis2589 grainde jander6442 Eradicator csshih phenol

no problem :beer: ---------- One more sample left - be quick and grab it

I will send one to awillis2589 instead then. He contacted me via email as he was temporary blocked on the forum yes the inductor does get hot as all the current is passing through it. but heatsinking the bottom of the board is enough to make it safe. yes 250mV reference voltage. I haven't...

I am giving away 5 free samples to the 1st five people who respond to this thread! :D specifying the current they want. 3A, 2.65A, 2.45A, 2.3A or lower. I would ask for just $5 each for shipping expenses. I will ship with registered air mail! :beer::beer:

Thanks, please if anyone sees errors in the manual, let me know.. I edited it at least 5 times because of stupid things like "low ripple ripple" :D :D :D :beer: Thanks in advance

Heatsinking is done on the bottom side of the driver, there is plenty of copper area for the areas that get hot during high current operation. Anything above 1A should be heatsinked. there is always the thermal shutdown at 150 C :D

Hey guys, I made a new buck driver capable of up to 3A of current with very low ripple. Efficiency is around 90%. check the manual for more info. This is Version 1 of it. it's not a very small driver, but these are intended to be used with high power laser diodes and larger hosts. the...

haha no, but I will see if that can be done in the future :D

Thanks jander6442 :beer: awillis2589 - the driver is 16mm ;) it's in the datasheet link above :beer:

Hello LPFers, I haven't written in a long time and I haven't even build anything lately.. Life is busy :( :D.. for a long time I had none of my drivers in stock. Now I have a limited ammount and you can purchase them at CajunLasers or DTR Shop too. DATASHEET here If someone is in need shoot...

I think you should heatsink the driver when setting the current and then test it with and without heatsink to see what currents does it produce. We are talking about the pot version, right?