Integrated Capacitor and Inductor with Low Parasitic Inductance

摘要

A combination capacitor and inductor employ a common volume of high permeability material for energy-storing electrical and magnetic fields thereby reducing the bulk of these components with respect to separate components of comparable value. Capacitor conductors are arranged so that while proximate to the high permeability material they provide countervailing current flows to minimize parasitic inductance exacerbated by the high permeability material.

主权项

1. A combined inductor and capacitor comprising:
an inductor providing a conductor extending between a first and second terminal point through multiple loops defining a surrounded volume; a capacitor positioned within the surrounded volume and providing a capacitor structure including opposed conductive plates attached by conductors, respectively, to a third and fourth terminal and an insulator separating the opposed conductive plates; and a high magnetic permeability material distributed within the capacitor structure comprised of at least one of a ferromagnetic and ferrimagnetic material; wherein the conductive plates and conductors are arranged so that current flow between the third and fourth terminals proximate to the high magnetic permeability material provides countervailing canceling magnetic fields within the high magnetic permeability material.