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DC-to-DC Converter Modelling

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stanigator

stanigator

Electrical
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Dec 26, 2009
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I'm just going through a power electronics textbook to get up to speed in this area, even though I'm sure real-life handling of these converters is likely very different from the textbook.

And this question may sound very basic. What are the main variables of DC-to-DC converters? The inductance, capacitance, and resistance of the circuit (those that are within the physical devices and those within our control)? The switching waveforms based on the transistors and what's being fed by a microprocessor somewhere? Also, what's the importance of equivalent circuit modeling in real life, or is this something mentioned on the datasheet of a certain chip?

Thanks in advance for your input!
 
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stanigator said:
What are the main variables of DC-to-DC converters?
Click to expand...
How long is a piece of rope?

The main variables are whatever you wish them to be based upon what parameters you're trying to fit. If you want a better explanation, you'll have to provide more detail on what you're after and why.

Dan - Owner
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Guess my question wasn't specific enough in the first place. Thanks for the feedback.
 
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The simple answer is similar to Lincoln's supposed answer about how long his legs were; long enough to reach the ground. The variables are determined by the requirements, as is in any design. You start with output voltage, output current, ripple, etc., and they result in a narrow range of component values that satisfy the minimum requirements.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! faq731-376 forum1529 Entire Forum list
 
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First determine how much power you want to transfer, isolated or not, then input and output current/voltage ripple is acceptable.
That will determine switching frequency and thereafter the topology, core and capacitor sizes.
 
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