April 2011
Intermediate to advanced
400 pages
16h 50m
English
Content preview from Power Sources and Supplies: World Class Designs
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43DC-DC Converter Design and Magnetics
Note that an exception to the “ valid ” range of r
from 0 to 2 occurs in forced CCM mode,
discussed in more detail later.
3.7 Relating r to the Inductance
We know that current swing is voltseconds per unit inductance. So we can also write
IEtL / (any topology)
H
(3-11)
Here Et is defi ned as the (magnitude of the) voltµseconds across the inductor (either
during the on-time or off-time—both being necessarily equal in steady state), and LµH
is the inductance in µH. The reason for defi ning Et is that this number is simply easier to
manipulate than voltseconds because ...
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