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Thread: Ta-Da! Prototype DC-DC PSU

  1. #11
    Neither darque nor pervert DarquePervert's Avatar
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    Quote Originally Posted by 2k1Toaster View Post
    Currently nothing. But the goal is for it to report back the actual voltages of all rails live at a bare minimum. Settings would be for amp turn on delay, and even sequencing of the power rails. Of course there is the soft off/hard off timing settings as well.
    I'm hoping programmability will be more flexible than the DIP switch timings on the M2.

    This was just a one off build to see what I can get going. Once I get this working I will work on making something more "pretty" to have actual beta testers. I haven't checked the specs of the DSATX, but I thought that thing was really really beefy? If you are using it to max capacity, this may not work. What sort of ratings do you need?
    DSATX Specs:
    Code:
    5.0 Volts +/- 2% 	12 Amps Nominal, 13 Amps Peak
    3.3 Volts +/- 2% 	10 Amps Nominal, 11 Amps Peak
    12.0 Volts +/- 2% 	12 Amps Nominal, 15 Amps Peak
    5.0 Volts SB +/- 2% 	1.5 Amps
    -12.0 Volts +/- 10% 	100 mA
    DSATX is rated at 220w total output.
    My calculations show the FBPSU (for lack of a better name) at 246.4w total output.

    Pretty damn beefy, if you ask me!

    That would be cool, but against ATX regulations. There is a giant document that you must follow to be compliant. But it sounds like you could use the remote amp turn on feed to turn on your screen + amp at the same time. Or you could <cough> get a FB </cough> and have it turn on one or both on boot as well.
    You've got all these modular plugs that are all 12v, I'm assuming.
    What if you could manually select one or two of them to be part of the ATX chain or separate 12v outputs controlled by a timing delay?

    That may not meet the criteria for ATX coompliance, I know.
    Just thinking...

    Quote Originally Posted by 2k1Toaster View Post
    I was quite depressed too when the fab house decided to just omit an entire drill pattern from the board... The USB mounting holes, board mounting holes, and several heat vias were not drilled. Also if you look closely those big through hole capacitors are mounted to SMD pads for similar reasons...

    I don't want to do an ETA because I feel really guilty about the FBv6. If there is a problem, it pushes things back by at least a month. The sooner the better though. Price point should be slightly above the M2 retail.
    Major kudos, Toaster-man!

    Just don't wire it to your cigarette lighter. We all know what will happen then!
    Have you looked in the FAQ yet?
    How about the Wiki?



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  2. #12
    Variable Bitrate m2x0p9x's Avatar
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    Thats too bad, never really wanted to mess with relays and what not, why I never wanted to go the FB route for something so miniscule. Sorry I know you didnt ask for suggestions but gotta say em while its still a prototype. Another one about timing, is to have the ability to control the amp/lcd off delay as well, not just start delay. If you have your pc run 15 minutes after ignition for short stops, it can turn just the lcd/amp off with ignition so it doesnt look like you left your system on.

  3. #13
    Variable Bitrate
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    This is sounding cool. An M2 is all I think I need but noise issues and a low capacity worried me..

    Quote Originally Posted by DarquePervert View Post
    You've got all these modular plugs that are all 12v, I'm assuming.
    What if you could manually select one or two of them to be part of the ATX chain or separate 12v outputs controlled by a timing delay?

    That may not meet the criteria for ATX coompliance, I know.
    Just thinking...
    What he said sounds perfect though.. Make each of the ports ability to be timed on and off. By default they all come on as standard atx ports so no compliance breaking. Buuut if a user wants they can mess with each one individually to turn different devices on and off at specified times

  4. #14
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by DarquePervert View Post
    I'm hoping programmability will be more flexible than the DIP switch timings on the M2.
    I intend it to be much more so. That always frustrated me with the M2.

    DSATX is rated at 220w total output.
    My calculations show the FBPSU (for lack of a better name) at 246.4w total output.

    Pretty damn beefy, if you ask me!
    I didn't realize the DSATX was such low power. I guess I am in the beef class!

    You've got all these modular plugs that are all 12v, I'm assuming.
    What if you could manually select one or two of them to be part of the ATX chain or separate 12v outputs controlled by a timing delay?
    Each of those plugs has 12v, 5v, 3.3v, and GND. So it can power anything from any one. I will have to think about making a timed output one... I don't know how to pull that off in a small space, I am already physically limited in board space.

    Major kudos, Toaster-man!

    Just don't wire it to your cigarette lighter. We all know what will happen then!
    Thanks! And thanks for the lol and reminder. I completely forgot about that pic!

    Quote Originally Posted by m2x0p9x View Post
    Thats too bad, never really wanted to mess with relays and what not, why I never wanted to go the FB route for something so miniscule. Sorry I know you didnt ask for suggestions but gotta say em while its still a prototype. Another one about timing, is to have the ability to control the amp/lcd off delay as well, not just start delay. If you have your pc run 15 minutes after ignition for short stops, it can turn just the lcd/amp off with ignition so it doesnt look like you left your system on.
    On/Off timing control is what I am planning.

    Quote Originally Posted by stretch4x4 View Post
    This is sounding cool. An M2 is all I think I need but noise issues and a low capacity worried me..
    The M2 while noisy, isn't all that bad. It is definitely difficult to make a switched power supply not induce noise back on its power source and I am not going to pretend like this won't. I am going to try and reduce that as much as possible, but it is a tall order.

    What he said sounds perfect though.. Make each of the ports ability to be timed on and off. By default they all come on as standard atx ports so no compliance breaking. Buuut if a user wants they can mess with each one individually to turn different devices on and off at specified times
    That is doable, but it won't fit on that board size. For a drop in replacement of the M2, I don't think it can be done. Perhaps a larger board can be made with the extra features, but I am really going to have to think if there is a creative way to make it happen. And creative usually means expensive...
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
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  5. #15
    Maximum Bitrate Borte's Avatar
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    Quote Originally Posted by 2k1Toaster View Post
    That is doable, but it won't fit on that board size. For a drop in replacement of the M2, I don't think it can be done. Perhaps a larger board can be made with the extra features, but I am really going to have to think if there is a creative way to make it happen. And creative usually means expensive...
    You could make it as an expansion board. Connect it via a cable so an end user could relocate it somewhere else. This would allow you to keep the space requirement but also have the option of controlled outputs.
    Failure is not an option...
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  6. #16
    Variable Bitrate
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    That's not a bad idea from Borte.. I know my build is still all in my head so I am happy to rearrange space as required for the features although it is possible I might use other options in the long run if I needed a fusion brain for other things..
    It's good that you are working on these suggestions though. The fact that you are trying to listen to what the customer wants I think will put you a long way ahead of many other manufacturers from the get go
    For a superior product I would stretch for it.

    Also great to see it is Beefy I can buy it for the features and there will be more than enough power to not worry

  7. #17
    Maximum Bitrate Borte's Avatar
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    One more thing: Will it survive a drop when starting the car?
    Failure is not an option...
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  8. #18
    Constant Bitrate kolton5543's Avatar
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    Quote Originally Posted by 2k1Toaster View Post
    That would be cool, but against ATX regulations. There is a giant document that you must follow to be compliant. But it sounds like you could use the remote amp turn on feed to turn on your screen + amp at the same time. Or you could <cough> get a FB </cough> and have it turn on one or both on boot as well.
    Instead of powering the monitor off of the remote turn on for the amp, you could maybe have basically two remote turn ons that work independent of each other. That way you could still control the anti thump specifically to where a user wants it and can also control when the monitor turns on without the monitor and amps turning on at the same time.


    Also may I ask where you get your components? All I really know of is "allelectronics.com" while they have a large variety it's not quite large enough. I've been trying to find those screw type terminals with 3 connections but have failed.

  9. #19
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    Quote Originally Posted by 2k1Toaster View Post

    This was just a one off build to see what I can get going. Once I get this working I will work on making something more "pretty" to have actual beta testers. I haven't checked the specs of the DSATX, but I thought that thing was really really beefy? If you are using it to max capacity, this may not work. What sort of ratings do you need?
    Yea based on the specs it'll handle more than the DSATX. I actually dont NEED anything more than an m2 to power my system I just hate the reliability of the m2 platform as well as its diagnostic limitations.
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  10. #20
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by stretch4x4 View Post
    That's not a bad idea from Borte.. I know my build is still all in my head so I am happy to rearrange space as required for the features although it is possible I might use other options in the long run if I needed a fusion brain for other things..
    It's good that you are working on these suggestions though. The fact that you are trying to listen to what the customer wants I think will put you a long way ahead of many other manufacturers from the get go
    For a superior product I would stretch for it.

    Also great to see it is Beefy I can buy it for the features and there will be more than enough power to not worry
    The Fusion Brain was built by suggestions. All I wanted was a one off board to flick 8 relays and read 2 temp sensors.

    Quote Originally Posted by Borte View Post
    One more thing: Will it survive a drop when starting the car?
    It should. I am still power it up... SLOWLY. With a board like this and all these power planes it is really difficult to get it started. I could just apply power and see if it works, but if something goes kablam, I have no idea what went kablam. So slow and steady bring up is under way. I will test it against load steps and input voltage swings. I designed it to be operable down to 6v. However, it draws a boatload of current at 6v. So if you tried to power it off of a 6v source, you would more than likely heat up and destroy the board. But the design simulated OK with a 12v source that fluctuated between 6v and 18v.

    Quote Originally Posted by kolton5543 View Post
    Instead of powering the monitor off of the remote turn on for the amp, you could maybe have basically two remote turn ons that work independent of each other. That way you could still control the anti thump specifically to where a user wants it and can also control when the monitor turns on without the monitor and amps turning on at the same time.


    Also may I ask where you get your components? All I really know of is "allelectronics.com" while they have a large variety it's not quite large enough. I've been trying to find those screw type terminals with 3 connections but have failed.
    I have been using Mouser for years and I highly recommend them. There is also DigiKey but I find them more expensive, higher min quantities on special ICs, and the packaging is one use. With mouser, they ship everything in separate labeled little "ziplock"-esque baggies. If you order 1 capacitor, you get 1 bag with the part number, value, footprint, manufacturer, and all the other details like when you ordered it and what PO it came from and the 1 cap inside. Makes things really nice and easy.

    Quote Originally Posted by Sonicxtacy02 View Post
    Yea based on the specs it'll handle more than the DSATX. I actually dont NEED anything more than an m2 to power my system I just hate the reliability of the m2 platform as well as its diagnostic limitations.
    Alright, cool beans.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

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