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Integrated LC Filter on Silicon for DC–DC Converter Applications

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10 Author(s)
Artillan, P. ; LAAS, Centre Nat. de la Rech. Sci. (CNRS), Toulouse, France ; Brunet, M. ; Bourrier, D. ; Laur, J.-P.
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The integration of passive components on silicon for future dc-dc converter applications is still a challenging area of research. This paper reports the microfabrication of a fully integrated filter containing a spiral inductor on top of a 3-D capacitor. A thin magnetic shielding layer is introduced between the two components demonstrating that losses caused by the inductor in the capacitor area are reduced, thus increasing the maximum working frequency of the whole component. The fabricated filter was characterized in a test circuit (buck-type converter).

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Power Electronics, IEEE Transactions on  (Volume:26 ,  Issue: 8 )