Monolithic DC/DC power management module with surface FET
OwnerL. Pierre de Rochemontinventor
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Abstract
A monolithic DC to DC converter, provides a semiconductor substrate, a surface FET formed on the semiconductor substrate that modulates currents across a surface of the semiconductor substrate, and a toroidal inductor with a magnetic core formed on the substrate around the FET and having a first winding connected to the FET.
Claims20
A monolithic DC to DC converter, comprising:
- a semiconductor substrate;
- a surface FET formed on the semiconductor substrate that modulates currents across a surface of the semiconductor substrate;
- and
- a toroidal inductor with a magnetic core formed on the substrate around the FET and having a first winding connected to the FET.
A magnetic core, comprising a ceramic core element formed with at least one layer of amorphous silica located between opposing sections of high permeability crystalline core material, wherein the ceramic element (or core material) has a resistivity >104 ohm-cm and a permeability ≧70.
An inductor, comprising:
- a magnetic core formed with a dielectric gap of high-resistivity material located between opposing sections of crystalline core material and an electrical conductor aligned with the dielectric gap.
Dependencies are inferred from the claim text.