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Optimal interleaving of DC-DC converters in automotive applications
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| Author(s) |
M. Gerber; J. A. Ferreira; I. W. Hofsajer; N. Seliger |
| Abstract |
Power electronics is finding more and more applications in the automotive environment. Many of these
applications are implemented in the engine compartment imposing significant requirements on the
electrical, thermal and volumetric performance of the power electronics. One such example is the
DC/DC converter required in the new 42V powernet [1,2]. In this paper, interleaving is considered as a
means to improve the performance of the DC/DC converter by reducing the filtering component
requirements and losses in the generally large filter capacitors. Generic equations are derived that
quantify the RMS and peak to peak currents in the filter capacitors as a function of the number of
phases. It is also shown that the choice of the inductance is more important than originally anticipated
in minimizing the RMS current in the capacitors.
The generic equations offer a very efficient way to gain insight into the performance and to improve the
performance of an interleaved system. The derived equations are experimentally verified. |
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| Filename: | EPE2003-PP0856 - Gerber |
| Filesize: | 925.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2003-10-22 by Unknown |
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