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Thread: 220 Watt DC-DC Power Supply: DSATX

  1. #1
    FLAC
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    220 Watt DC-DC Power Supply: DSATX

    All,

    I've created car DC-DC power supply with the following specs:

    Vin: 8-16 volt input

    +5VSB @ 1.5 Amps
    +5 @ 12 Amps
    +3.3 @ 10 Amps
    +12 @ 12 Amps
    -12 @ 0.1 Amps

    >95% efficiency

    Includes integrated Shutdown controller with similar function to the uSDC20D only way more flexible and controllable.

    It has a serial port OR USB interface.



    If your interested in the beta test please see this page:

    http://www.mpegbox.com/dsatx.html

    After the beta test is done, mp3car store will sell these at a much higher price.

    -Jeff
    MPEGBOX - Plexiglass Computer
    www.mpegbox.com

  2. #2
    Constant Bitrate
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    What is the Serial or USB port used for? Not quite understanding the point for them if this is a DC-DC power supply. I mite be interested in beta testing one. Ill let you know

  3. #3
    Maximum Bitrate
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    Quote Originally Posted by Darek85
    What is the Serial or USB port used for? Not quite understanding the point for them if this is a DC-DC power supply. I mite be interested in beta testing one. Ill let you know
    a wild guess (not really) would be the shutdown controller
    I have found you an argument; I am not obliged to find you an understanding.

  4. #4
    FLAC
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    Quote Originally Posted by Darek85
    What is the Serial or USB port used for? Not quite understanding the point for them if this is a DC-DC power supply. I mite be interested in beta testing one. Ill let you know

    The Serial Port spits out this style of information every 200ms:
    9600 baud, 8,N,1 No flow control.

    +030.3:12.56:12.00:05.19:03.34:10.49:0560:YNY:3:05 58
    A : B : C : D : E : F : G : H :I: K

    A: Temperature in Degrees C
    B: Input voltage at VIN
    C: 12 Volt Rail Output
    D: 5 Volt Rail Output
    E: 3.3 Volt Rail Output
    F: Low Voltage Threshold (P2 Adjusts this)
    G: Number of Seconds for main Shutdown Timer (P1 Adjusts this)
    H: Y/N Good/Bad(Vin Voltage Good, Acc Pin High, Temp Good)
    I: State of SDC:
    (0: off, 1:Pulse, 2: Running, 3: Cnt Down, 4: Shut Down)
    K: Count value for Shutdown Counter (seconds)


    The Serial Port Accepts These Commands:

    P: Enter Program Mode
    S: Stop the printing of the serial diags (Stop)
    G: Continue the printing of the serial diags (Go)
    Z: Set the shutdown counter to 2 seconds (basically cause a shutdown)
    @: Force a power button press, shutdown or startup.



    Program Mode overview:

    The DSATX is serial port programmable! You can tell it to use the P1 P2 pots or hard code the values into it. You must always type the right number of characters though. IE, if you want 60 seconds, you canít type 60. You must type 0060, etc.
    You donít hit return when your done typing in the values. It will automatically take it. If you mess up, make sure you do it again and get it right.

    In the below example, we program the device. Tell it to use the Pots (P1 P2) for the Timer1 Timer and the low voltage threshold (P2 selects a value between 10 and 12 volts). Maxtimer1 is the maximum seconds you can set with the P1 Pot. Basically, if you set the pot half way and had Maxtimer1 set to 1200, it would shutdown in 600 seconds. If you set the Maxtimer1 to 0060 you would have between 0 and 60 seconds to select with the P1 Pot.

    13 volt turn on is an option where ACC has to be high and the engine has to be running before the computer will turn on.

    P
    PROGRAM MODE
    Use POTs? y/n
    y
    MAXTIMER1:
    1200
    VTURNON 13 volts? y/n
    n
    PROGRAM DONE



    In the below example, we program the device. Tell it to Hard code the values for the Timer1 Timer and the low voltage threshold. If you set Lowvolts to 1050, the unit wouldnít shutdown until it hit 10.50 volts on the VIN input. If you set Timer1 to 0600, then after 600 seconds of ACC going away, the computer would turn off.

    13 volt turn on is an option where ACC has to be high and the engine has to be running before the computer will turn on, this time we didnít choose it.


    P
    PROGRAM MODE
    Use POTs? y/n
    n
    LOWVOLTS:
    1050
    TIMER1:
    0600
    VTURNON 13 volts? y/n
    n
    PROGRAM DONE




    Does this help explain the serial port? It is optional. It is only used for the hardcore people who want to have lots of control of their system. It is also for figuring out what the right low voltage settings should be.
    MPEGBOX - Plexiglass Computer
    www.mpegbox.com

  5. #5
    MySQL Error Scouse Monkey's Avatar
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    jeff, sent you an email last week about danceheaven and I, did you get it?

  6. #6
    FLAC
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    Did you send me an email or an MSN?

    Do you want to pay 50 bucks more so I can send the package Priority international so it can get there in a week?

    -Jeff
    MPEGBOX - Plexiglass Computer
    www.mpegbox.com

  7. #7
    Newbie
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    i'm interested.

    seems better specced than an opus 150w. and cheaper!

    combined postage to the uk, then scouse sends it on to me?

  8. #8
    MySQL Error Scouse Monkey's Avatar
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    Geejay, had no idea you are in the UK.

    Jeff, i sent the email to the address on your s=webpage about the psu

  9. #9
    Raw Wave rando's Avatar
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    These specs look great Jeff -- nice work! The serial interface for monitoring and programming is a great feature that's long overdue. Can you post the physical dimensions?

  10. #10
    Newbie cell21633's Avatar
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    at school right now, so i can't measure dimensions on my carpc.
    i'm interested, the m1-atx i've been looking at might be too long for my use.
    RED 1999 ACURA INTEGRA GSR STOLEN -- CHICAGO 02/27/08
    VIN JH4DC2391XS002416
    PLATE ILLINOIS 5287412
    Team Integra Markings on Rear Quarterpanel Windows
    REPORT TO 911 IF FOUND

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