April 2011
Intermediate to advanced
400 pages
16h 50m
English
Content preview from Power Sources and Supplies: World Class Designs
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Chapter 6
6.10 Push-Pull Circuits
Push-pull circuits are not well suited to voltage mode IC controllers because any fl ux
imbalance in one leg of the transformer primary will eventually saturate the transformer
core. A current mode controller will control the imbalance and limit the current through
both legs. One switch and one winding of the transformer may still carry more load than
the other, but the total fl ux in the core is controlled by limiting the maximum current in
each winding.
Figure 6.18 shows a representative push-pull converter. Notice that the secondary side uses
a center-tapped full wave rectifi ...
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