USB Charge Booster - Passthru DCP Enumerator [Final]

Corrections made to board issue (cap moved closer to the VCC pin on the IC), even shrank board by 1mm width, fixed the USB SMD out pad issue (pads were too narrow by about. 5mm)



Everything remains the same

I did however get a custom sig on it but it doesn’t render it on OSHPark, but Mattaus says it will be on the board.

3D render


Charge Booster - DCP Enumerator/USB Wrapper


Final revision-tested and working well, no smoking of the IC and charges at well over 1A

I see overlapping holes to make an oval via. Oshpark advises to use one larger via instead.

That was a stock component that came from the sparkfun.lbr repository I got online

Under Sparkfun-Connectors USB-A-SMT-MALE

Some fabs allow overlapping drills, others don’t. Oshpark says no.

Oshpark is working on officially supporting oval vias, plated slots.

So I need to make the oval a round one like on the female USB then?

I will have to figure out how to modify the part then

I also need to double check my pinouts on the TPS2514

Well I see an issue right off the bat

Pins on the TPS2514 are wrong, board will work if you use the TPS2513 (dual output [channel 1 on pins 1/6, and channel 2 on pins 3/4, but not on single channel TPS2514])
Which brings me to the fact that at digikey they don’t have TPS2514 in CT, only tape and reel, mouser has them but the TPS2513 costs less than the TPS2014 at digikey than the TPS2514 at mouser…hmmm

haha…and my silk screen on the back side is backwards…jeez

ok…on to revision 2…doh!

I’ll try working on the male plug package to fit in the OSHPark rules and fix the pinouts, and turned in a ticket asking them if the sparkfun board they recommend I use will work or not

The item you linked to is not for sale or the link does not work… What is it, what does it do and why do I want to make one so badly?

fixed the link in the OP

Look at the pics…it makes the charging device charge at it’s max rate…more or less if you plug your phone into a non-coded charging port or data port on a computer it will only charge at maybe 500mA to 1A, with this inline, not only “can” charge at up to 10watts (2A [current provided by charging device]) but it also acts as a data isolator [juice jacking prevention] (aka USB Condom) no more sticking your thingy into a hole you are unsure it’s safe and automatically charge at max rate :wink:

Wow…I just realized my design is kinda like theirs but “automatic” and will cost MUCH less than $9.99 a piece, and is OPEN SOURCE! (notice theirs is also on a “purple board” but I bet theirs isn’t shared [mine isn’t yet until I get it right] I think I might just put BLF DCP on the silk screen :stuck_out_tongue_winking_eye: )

There fixed it…and the stupid bDocu words from being backwards

Standby…pinouts bassackwards…fixing

Oshpark themselves recommended you use that male plug with overlapping holes?
Oshpark’s fab can actually do oval vias, plated slots. Not officially supported (yet) as there is a chance it won’t get done as it requires the fab to notice it.

Actually the gentlemen from OSHPark sent a revision of the original part back to me (I sent him the .brd file and he fixed it [plus he changed the color of the tDocu and bDocu that made it much easier to look at]), the holes were multi-drill hits when I looked at the part…but I found a more viable replacement in a different library repository anyway

His response in email

P.S. His fix is in the “files” repository from the OP
Plus I don’t think it’s a “via” more or less a groove (multiple drills in a line that overlap) [the “plated slot” he and you were referring to] for the USB locking tab to fit thru, then have solder pad on top and bottom to solder to for retention/strength of the USB plug on the board…makes it MUCH more rigid. I do see the problem with overlapping drills like that though.

Can someone double check the pinouts of the USB’s on both end…I might have the male side backwards, the + and ground pins

It’s way past my bedtime…I work deep nights and I’m getting a bit fuzzy


Aaaaand I had it backwards…fixing…jeez

Ok, went over the USB pins 4x times now…they are correct…even drew out a picture of the connectors and the pins…and oriented it to the board…and fixed the DCP pins as well…with the original yes I had to reverse the D+ and D- pins, with the U1 flipped didn’t need the vias

ok…I’m done…files and everything are in the dropbox repository…if you want to doublecheck…please let me know…thanks

Excellent work, WarHawk-AVG! I will be sure to give this one a shot once my other projects are finished up. Stupid tube amp.

Final revision up…triple checked (even printed out the components, laid them out on paper to ensure the pinouts and everything was correct)

Rounded the edges so the board won’t be as sharp or stabby in your pocket or bag or whatever

I had it correct for the USB connections on my first try, I kept second guessing myself and ended up mucking it up, I did have the D+ and D- backwards, with the orientation on the board the way it is now, don’t need the vias thru the board straight shot to the OUT USB connection

Love to see a picture of this when you get one put together. So close to buying the set up to put one together myself.

I am going to order a set, today is payday, and I don’t think $3 will break the bank

Then just have to order 3X components and just put together, then to test em out

Boards are at fab…ordering the components

Sorry if this is obvious to learned souls like Warhawk, but there is nothing to flash right? Just solder paste and heat. I think this would make a nifty little gift or “stocking stuffer” for folks this Christmas season and I intend to make a bunch. Just going to wait to see how Warhawk fares with his tests after building.

What does this device do?

It ensures your device charges at full speed.
A device will not charge at full speed unless it sees the coding it wants on the usb pins. Problem is, there is no standard. Android wants one code, Apple wants apple code and a few others want different codes.
This chip will adapt and always present the code needed for max charging speed. It switches among 6 different coding schemes.

And as a side effect it will prevent juice jacking. A USB charging port stealing your devices’s data and/or injecting malicious code.