300W tiny PSU final feature requests collecting

dragonBTV · 08-09-2005, 08:42 PM

this project is continuing abd aim to a 400W tiny one.

to read the Q&A please jump to page4

it is here:http://www.mp3car.com/vbulletin/show...7&page=4&pp=15

the brand new design of my 300W tiny PSU is going to be manufactored soon

please post your feature requests here, to make it suitable to more users.

1.up to the design, the output could be as follow.
I know that the large the better, but the price(not the size) will be related to.
12v main 12A? 15A? 18A? 20A?
5v main 10A? 15A? 18A? 20A?
3.3v main 10A? 15A? 18A? 20A?
5v standby 1A? 2A? 3A?
-5v 1A? 2A? 3A?
-12v 1A? 2A? 3A?

2.the shut down controller can be user upgradeable
anlogal shut down controler
digital shut down controler
mutifunction/re-programmable digital shut down controler

3.input range:
8v to 18v ?
8v to 24v?
8v to 30v?
what should the lowest input votage be?
6v to 10v (notice, at 6V/300w, the input current would be over 50A!)

4.cooling fan:
according to the design, it could be fanless under 200w at 45 degree C condition.
if someone want to mount PSU near the engine.....

5.technologe used on this PSU:
current share
smart boost
soft start
full indepandent channels for all output votage
high quality import parts even the powdercores
PWM control
protections
ATX standar logic
re-programmable
master/slave
remote control

6.should be decided:
the INPUT wrong wire protection.
as the input currency could up to 30A or more at some conditions
if added, it will low down the efficency
if not, wrong connectting + and - will burn the PSU....

DRWeside · 08-09-2005, 09:06 PM

Can you make Quantum Dilithium crystal injectors an option?

RoyN · 08-09-2005, 09:56 PM

Hey dBTV!

Cool to see your already ready!!!!

Here are my ideas:

15A+ on 12v line since many ATX mobos need a lot of 12v juice.
5v also on high priority since many people use 5v laptop HDs, etc, usb devices, etc,etc
Fan option... I live in brazil, the psu will get much hotter than 45deg MANY times a week... (yes, the car in the sun for 3 hours will make it veryyy hot)
making input voltage to 18v should be fine I think... although maybe 8v to 20v is better for a bit more flexibility... can you make it 6v to 20? I think it is better I have problems sometimes wqith the opus surviving crank...

I cant wait... I hope I can have a prototype when u start selling since I'm not from the us!

custardbomb · 08-10-2005, 04:11 PM

Will it all be regualted?

evandude · 08-10-2005, 04:31 PM

Quote: Originally Posted by custardbomb

Will it all be regualted?

of course.

SoFlaLude · 08-10-2005, 05:54 PM

1) As much as possible on the 12V rail, please! Let's make this something that people who are bent on using an Athlon64 CPU will run out and buy!

2) Digital? Dunno, I'll let the more experienced folks weigh in....

3) 8v-18v should be fine for a car with a properly operating electrical system.

4) A temperature-controlled fan could be a nice addition, depending on the increase in cost/complexity.

5) Same as #2....

6) If it'll affect the efficiency, I say leave it off - I think most of us attempting something like this know to double check power/ground cables before connecting them to equipment.

RoyN · 08-10-2005, 06:17 PM

Yeah, priority on 12v and 5v... is there anyway of making it balance a certain amount of output between the 2 voltages? like if I use a P4, then my requirement for 12v will be high, my 5v requirement probably not much... if I use an embedded board I might need only 5v and 3v, and not even want the 12v, so if it could "direct" more juice as needed that would be amazing... but I guess that would be practically impossible wouldnt it?

meddler · 08-11-2005, 02:27 AM

IMO.

these would be minimums

12V - 15A
5V - 20A
3.3V - 10A
5VSB - 1A
-5V 1A (0.5A should be enough)
-12V 1A (0.7A should be enough)

Input voltage: 7V - 16V (must survive crank. Most cars, even a diesel, shouldn't go lower than 7V unless the battery is stuffed)

SDC should be programmable. Not a real problem if it's digital or analogue. As long as it works

I have a lot of ideas for an SDC, pm sent.

Fan is a must. But if you don't need it you could just disconnect it.

Overcurrent and reverse polarity should be mandatory in the design.

0l33l · 08-11-2005, 02:34 AM

No clue about the output amprages.

Input should be from 8v-18v.
SDC should be digital, as that would be easier to reflash. Also it should have a few relays, so you could delay powering on your monitor (like after the POST is though), and also to act as a trigger for your amp.

Fan... I don't really care. I'm sticking mine in the trunk

Translation: yes.

And you should give the ability to not power USB devices when car is off (not in ATX spec, but feature in opuses except 150w).

evandude · 08-11-2005, 08:02 AM

Quote: Originally Posted by meddler

SDC should be programmable. Not a real problem if it's digital or analogue. As long as it works

I have a lot of ideas for an SDC, pm sent.

Meddler, I'm doing the programmable SDC for this thing, so PM your ideas to me

Or, for that matter, post them here, as this is a feature request thread

0l33l · 08-11-2005, 02:44 PM

Quote: Originally Posted by evandude

Meddler, I'm doing the programmable SDC for this thing, so PM your ideas to me

Or, for that matter, post them here, as this is a feature request thread

Ability to control a few relays after computer has turned on. So delay for screen and amp.

evandude · 08-11-2005, 03:01 PM

The plan is to have the SDC expandable.

due to the apparent size constraints on the SDC board, there's barely room for an 18-pin PIC, so the number of onboard I/O is limited. Thus far, onboard, in addition to the typical connections for power control, I have placed a temp sensor, some status LEDs, serial lines, and analog voltage measurement to monitor the input voltage. This board will have any settings (like all the delays, thresholds for voltage/temp warnings, etc) configurable by serial.

So there's not really any more room on the SDC board for more stuff. HOWEVER...

the plan is to have an external addon board (this is where the expandable part comes in) that connects to the SDC via a 4-pin connector. since this board doesn't need to be inside the PSU, it can have as much on it as needed. This is where all the "fun stuff" will go... things like various temp and voltage monitors, relay controls, extra status LEDs and control buttons, serial communication with the computer, etc. etc.

The reasoning being that this allows a SDC with moderate features (all the important stuff for an SDC to do, and comparable to the built-in SDC's of other PSU's) to be in the PSU, and anyone who wants more control or features can get the expansion board.

0l33l · 08-11-2005, 03:19 PM

Oh, is the SDC gonna have a serial port? If it will, it woudl be cool to have it send the car's battery voltage

The expandable part sounds good

evandude · 08-11-2005, 03:24 PM

Quote: Originally Posted by 0l33l

Oh, is the SDC gonna have a serial port? If it will, it woudl be cool to have it send the car's battery voltage

The expandable part sounds good

yes, it is. And yes, it will be able to send car voltage readings, as well as the temp reading.

I plan to make it so that standalone, the SDC will output that kind of info repeatedly, and accept commands from the computer to change the above mentioned settings.

When connected to the expansion board, both the computer and the SDC will communicate with the expansion board, allowing access to information of whatever peripherals are on there.

meddler · 08-11-2005, 08:03 PM

I sent a pm to dragonBTV. evandude, I would prefer to talk about my ideas over pm if that is ok. I will send you a pm later today sometime.

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