A new geometry of integrated inductors for twochannel
interleaved bidirectional converter is presented in this
paper. The new geometry module integrates two individual
inductors by stacking three I-cores. The middle I-core provides
a shared flux path with low reluctance which uncouples the two
inductors. The air gaps are constructed by separating the I-cores
using copper foil windings with well-defined thickness. In this
work, inverse connection and direct connection for the two
integrated inductors have been analyzed. For the inverse
connection, a unique saturation behavior in the middle I-core
has been shown. The integrated inductors with new geometry
make it possible to build low-profile, low-cost, flexibility DC/DC
converters, and it can be extensively designed for low-voltage
and high-current required by modern digital applications.
Experiment results obtained from a 48V-12V 30A two-phase
interleaved buck converter, demonstrates the difference in the
inverse connection and the direct connection. Both efficiencies
are above 91% from half to full output current.
|Title of host publication||IECON 2010 : 36. Annual Conference of IEEE Industrial Electronics|
|Conference||36. Annual Conference of the IEEE Industrial Electronics Society|
|Period||01/01/10 → …|
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