EEVblog Electronics Community Forum
Electronics => Projects, Designs, and Technical Stuff => Topic started by: tmartin13 on November 21, 2015, 03:49:09 pm
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So i'm looking at designing a DC/DC converter for future projects, and they seem pretty handy to have around. I designed it in Cadsoft Eagle and I used the MAX643 switching converter. My choice for the IC comes from the fact that I could not find a library for eagle that allowed me to place the LM2577 step-up regulator that I originally wanted to use. My question is if this design will give me decent results? I'm not so much concerned with the exact output voltage so long as it is around 15volts. And in the future, is there an easy way around the limited libraries in Eagle?
MAX643 Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX641-MAX643.pdf (https://datasheets.maximintegrated.com/en/ds/MAX641-MAX643.pdf)
Reference circuit, and Eagle schematics attached.
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One of the pitfalls of CAD...
I like to start designs on paper/whiteboard/chalkboard, where the creativity can run amok, unconstrained by the limitations of CAD.
Then, if I need to go to the computer, then I will deal with whatever CAD issues there may be. But I would never allow the CAD tool to dictate my design.
Computers are supposed to help you; this seems backwards.
As for EAGLE, if a part is not in the pre-installed library, you can surely draw your own custom parts.
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One of the pitfalls of CAD...
I like to start designs on paper/whiteboard/chalkboard, where the creativity can run amok, unconstrained by the limitations of CAD.
Then, if I need to go to the computer, then I will deal with whatever CAD issues there may be. But I would never allow the CAD tool to dictate my design.
Computers are supposed to help you; this seems backwards.
As for EAGLE, if a part is not in the pre-installed library, you can surely draw your own custom parts.
That's probably going to be the approach in the future. This was mostly a quick and dirty project to show a friend it could be done. And I needed CAD to order the PCB otherwise I definitely wouldn't have messed with it.
Is there any reason this circuit wouldn't perform as expected though?
Here is my parts list: