OPEN SOURCE: "CC-Boost" - 2.4 Amp boost driver - RC1

[rhd]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

Here's a better digikey list than the one in the schematic. The FP6298 you need to buy on Aliexpress or similar (it's inexpensive though)

ASPI-0630LR-5R6M-T15CT-ND INDUCTOR POWER 5.6UH 0630 SMD
568-6753-1-ND DIODE SCHOTTKY 30V 5A SOD128
445-8047-1-ND CAP CER 47UF 25V 20% X5R 1206
445-8047-1-ND CAP CER 47UF 25V 20% X5R 1206
311-26.1KCRCT-ND RES 26.1K OHM 1/8W 1% 0805 SMD
RHM1293CT-ND RES 0.05 OHM 1/3W 1% 0805 SMD
ZXCT1009FCT-ND IC CURRENT MONITOR 1% SOT23-3
P499DACT-ND RES 499 OHM 1/8W .1% 0805 SMD (sets 2.35 A)

 

[jimdt7]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

Once again RHD, you are the man! :wave:

Jim

 

[TimTom]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

Epic driver, +rep ;D

But.. how I can open the 2 files in the zip-folder? I mean.. what program do I need?

EDIT: This list should be true? http://www.digikey.de/short/2j0tp

 

[benmwv]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

Great to see this come together rhd!

I should have some of these boards coming in from oshpark soon, can't wait to try it out!

Tim, the schematic and board files are for eagle cad. You can download the free version to open these boards.

 

[vortish]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

Great to see this come together rhd!

I should have some of these boards coming in from oshpark soon, can't wait to try it out!

Tim, the schematic and board files are for eagle cad. You can download the free version to open these boards.

how to you get the file to load on oshpark i would like understand how to do this when I get back on my feet I would like to order some on these to build with a friend

 

[ARG]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

how to you get the file to load on oshpark i would like understand how to do this when I get back on my feet I would like to order some on these to build with a friend

RHD has supplied the .brd file. You just go to OSH park and drag and drop the .brd

No need to export in gerbers or anything like that

 

[crazyspaz]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

Oh, I thought these were adjustable...count me out then, if anyone is making a bunch.

RHD, any chance of an adjustable boost drive like this?

 

[rhd]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

Oh, I thought these were adjustable...count me out then, if anyone is making a bunch.

RHD, any chance of an adjustable boost drive like this?

I happen to *hate* variable drivers in general. But that's because I don't make drivers for other people, I just make them for me, so whenever I need a driver, I just reflow it to exactly the current I want.

....but...I realize that other people like variability, so here you go:

It uses a fantastic 11-turn pot from Digikey, which is nice, because the range of adjustment will be 480 to 2520 mA, so 11 turns gives you a good amount of precision, even within such a wide range:
Copal Electronics Inc - TRIMMER 2K OHM 0.125W SMD. In addition to being great trimmers, they're also fairly expensive trimmers, at $4 each. However, the footprint of most SMD trimmers is fairly similar, so it's probably a non-issue to reflow on a typical $0.40 cent 1-turn trimmer instead.

This design uses a more generic inductor pad as well, because I wanted to allow for testing three or four other inductors (part numbers are in the schematic). It also kicks the board size out to 11x11 mm.

 

[crazyspaz]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

"Ask and thou shall receive." Awesome.
Thank you so much RHD- now i just need to find a toaster oven
Although, I have a ridiculously high powered soldering iron around here somewhere (for plumbing purposes), and i bet i could put the PCB and a piece of metal, and heat said piece of metal with the iron, and do it that way-but that would only work if the board was single sided.

 

[vortish]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

"Ask and thou shall receive." Awesome.
Thank you so much RHD- now i just need to find a toaster oven
Although, I have a ridiculously high powered soldering iron around here somewhere (for plumbing purposes), and i bet i could put the PCB and a piece of metal, and heat said piece of metal with the iron, and do it that way-but that would only work if the board was single sided.

butane torch would work the same as soldering Iron Crazy... it just a matter of getting to the precise temp I think most solder melts at just over 200 Degrees F but what do I know

 

[crazyspaz]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

I cant imagine holding a torch up to a board a components would end up very well...

 

[petters]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

This is awesome, great work rhd! Also the forum won't let me rep you, so now I am completely done with the rep system before I even started using it.

 

[ARG]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

You could probably solder the whole board by hand with the exception of the inductor, no need to reflow the whole thing if you don't have the equipment

 

[COMMANDR]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

Awesome post on the new boost driver. Would really like to try the toaster oven route
to do the reflow number. Thanks again for such an awesome post. Just + rep you. :>)

 

[ARG]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

This is a good video to watch on it: EEVblog #186 - Soldering Tutorial Part 3 - Surface Mount - YouTube

There's only three things you really need:
An appropriate sized tip
Appropriate sized solder (This is a big one. If you have thick solder you can't control the amount nearly as well)
SMD tweezers

 

[rhd]

Re: OPEN SOURCE: New Boost Drive, 2.4A capable from one cell, tested and working

This is a good video to watch on it: EEVblog #186 - Soldering Tutorial Part 3 - Surface Mount - YouTube

There's only three things you really need:
An appropriate sized tip
Appropriate sized solder (This is a big one. If you have thick solder you can't control the amount nearly as well)
SMD tweezers

I have actually stopped using solder entirely, for anything. I use solder paste exclusively, even for non SMD tasks. Solder paste is just so much more convenient.