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Runo's Power Design
One of my most important tools has been
Mathcad - a mathematics software, in which I have
developed a variety of tailor made and specialized
worksheets intended for typical SMPS design.
Here is a small selection - some of them with examples of results:
Flyback,
"discontinuous" as well as
"continuous current mode" and "boundary conduction mode".
Booster for "power factor correction"
with fixed frequency.
Booster for "power
factor correction" with variable frequency -
"boundary conduction mode"
Boundary Conduction Mode.
Booster as a DC - DC
converter.
Forward
converter (buck with transformer).
Full bridge, half bridge and
push-pull converter.
Half
bridge and full bridge resonance converters of the LLC
or the LCC
type. Also see my guide to the LLC analysis worksheet here.
Inductor design, airgap,
saturation etc.
Feedback loop with open loop and closed loop phase- and gain
curves and step load response. A simple
(buck)
and a little more advanced
(buck-boost) example.
See also this article. Or this:
Buck Converter Loop.
Spectrum of conducted emission and calculation of the
necessary noise filter.
Still today, new worksheets are
occasionally added to my assortment. By virtue of these
tools I am often able to hit very close to the target in
the first shot.
I find the "Try something - see if it gets
better"-method very insufficient if used alone.
In recent
years, unfortunately, Mathcad has undergone changes which make it less
attractive as my preferred math software.
Therefore, at present, I am re-building my most important worksheets in
an alternative math platform: JupyterLab.
JupyterLab is a popular, free, and open source software based on the
Python programming language.
Here are some examples of what I achieved:
-
Flyback
converter designer, fixed frequency, discontinuous or continuous current
mode
-
Feedback
loop buck-boost converter
-
Steady state
LLC designer
-
Steady state
LCC designer
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