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FrozenGate by Avery

[UPDATE] V4 BlitzBuck, Available Soon!

Re: BlitzBuck V3, Available Soon!

clif said:
Wolfman:

I'm sending offroadfreak the last spare board I have on hand, as opposed to waiting on the return since he posted everything to see for us here. That way he can finish his build without further delay :san:
Click to expand...

Your the man clif! I received the mail :D do i need to sent pp for shipping? :beer:

@ wolfman if you have any question about the driver i will try to answere them as far as i know them ;) when i am back from holiday i could take another look at it as far as components go.

Greetings,,
 





Re: BlitzBuck V3, Available Soon!

I was talking about the small 3-pin chip ;)

But fair enough, Clif.

New ones should be in stock in probably two weeks or so. Parts have been ordered, I expect them to arrive in a week and a half or so, then a few days of hectic creation.
 
Re: BlitzBuck V3, Available Soon!

Wolfman29 said:
I was talking about the small 3-pin chip ;)

But fair enough, Clif.

New ones should be in stock in probably two weeks or so. Parts have been ordered, I expect them to arrive in a week and a half or so, then a few days of hectic creation.
Click to expand...

Yep that is the one i was talking about in my edit too ;) next to the diode + lead.
 
Re: BlitzBuck V3, Available Soon!

There should be a small resistor between the two pins facing the positive lead on the small chip.
 
Re: BlitzBuck V3, Available Soon!

I can barley see it on his pic, but it looks there.
 
Re: BlitzBuck V3, Available Soon!

Yeah, I think I see it, but not sure >.>

EDIT:

I want to thank both jander and ARG for being so cooperative with this bizarre issue that has sprung up. You guys have been really good about helping me diagnose the issue and I'd like to continue to work on it.
 
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Re: BlitzBuck V3, Available Soon!

Wolfman29 said:
then a few days of hectic creation.
Click to expand...

:bumpit:

Before you know it you'll have a fully autonomous robot making these babies pumping them out like machine gun bullets! :na:
 
Re: BlitzBuck V3, Available Soon!

Wolfman29 said:
I want to thank both jander and ARG for being so cooperative with this bizarre issue that has sprung up. You guys have been really good about helping me diagnose the issue and I'd like to continue to work on it.
Click to expand...

:thanks: Glad I could help :beer:

If there's any more testing you need me to do just ask :) I really want to know what is causing this now too.
 
Re: BlitzBuck V3, Available Soon!

Well I recieved some replacement boards today and I must say that a working version of this driver exceeded all my expectations.. I can finally use the serial block with 14500's in the saik and still pull off 2.9W without heatsinking.. but it does get hot to do that.. I cant wait to get this into the build with some TEC... I think the V is too high at 12V and it may be why the driver is heating up so quick.. So adding another driver and a couple small TEC's should yield me the 3W I so deserve!! lol :worthy:

On another note I think I killed 2 18650 orbtronic 10A the other day hooking it up direct to a TEC in 3x 18650 serial! I think it completely drained them and they dont read any charge whatsoever and wont charge.. Bummed me out they were 12$ each or something..
 
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Re: BlitzBuck V3, Available Soon!

Kizdawg said:
I think the V is too high at 12V and it may be why the driver is heating up so quick..
Click to expand...

It should produce less heat if I'm not mistaken with higher Vin since the current draw would be significantly less, what kinda of current draw are you getting with 12VDC input? Oh and what setting are you at, 2.1amps output?
 
Re: BlitzBuck V3, Available Soon!

The heat produced from 12V should be the same from 8V, as long as the efficiency stays constant, because the POWER in will be the same. It should maintain about 85-92% efficiency in that range, but anything over about 2A and you're going to need some heatsinking.

EDIT: I'd also like to point out, on a completely random side note, that these should be able to power a LPC off a single li-ion. I did some testing with a 1-Ohm resistor and 4 diodes in series (adds up to about 3.2V for 500mA passing through) which I believe is close to an LPC's Vf. It works rather smoothly at 4.2V and, yes, it will start to drop off at around 3.5-3.7Vin, but that should give you decent run-time. But this needs further investigation.
 
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Re: BlitzBuck V3, Available Soon!

I think it is doing just great! I am well over 2.1A more like 2.5A and I am quite happy with the results. I havent had enough time to test out different battery combinations but I was also thinking that the 12V is a but much but If I can run some small TEC's off that 12V then the left over V to the driver would be less??? no? or am I not thinking correctly.. Anyway's maybe I will get more time to play with it again later today.
Thanks again!

EDIT: The heat I cant see being an issue.. I have seen other drivers running way less that get alot hotter. Once this is heatsinked it will be awesome I think and this current.
 
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Re: BlitzBuck V3, Available Soon!

Actually the BlitzBuck can handle up to 18V on the input!
 
Re: BlitzBuck V3, Available Soon!

Yeah that's great. This would work great in a 3x 18650. I am going to take some pictures today and get it heatsinked. Is it really just the main IC that needs the heatsink or should other parts be sinked as well?
 
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