April 2011
Intermediate to advanced
400 pages
16h 50m
English
Content preview from Power Sources and Supplies: World Class Designs
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47DC-DC Converter Design and Magnetics
• Therefore, we can generally state that inductance is inversely proportional to
frequency.
Finally, having restored r to 0.4, the peak will still be 20% higher than the DC level.
But the DC level has not changed. So the peak value is also unchanged (since r hasn ’ t
changed either, eventually). However, the energy-handling requirement (size of inductor)
is
1
2
PK
LI
2
. So since L has halved, and I
PK
is unchanged, the required size of the
inductor has halved .
• Therefore, we can generally state that the size of the inductor is inversely
proportional to frequency ...
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