Integrated Circuit for Controlling an Electric Motor
AssigneeMicronas GmbH
InventorsJorg Franke, Klaus Heberle
Life of this patent
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Abstract
An integrated circuit for controlling an electric motor, which has a primary component with a coil and a permanently magnetic secondary component cooperatively connected via an air gap to the primary component, has a semiconductor substrate in which are integrated a microcontroller and/or a pre-amplifier for controlling the coil of the electric motor. For detecting the position of the permanently magnetic secondary component, at least two magnetic field sensors with their measurement axes aligned crosswise relative to each other are integrated in the semiconductor substrate.
Claims15
An integrated circuit for controlling an electric motor, which has a primary component with a coil and a permanently magnetic secondary component displaceable relative to and cooperatively connected to the primary component via an air gap, with a semiconductor substrate in which are integrated a microcontroller and/or a pre-amplifier for controlling the coil of the electric motor, characterized in that for detecting the position of the permanently magnetic secondary component, at least two magnet field sensors with their measurement axes aligned crosswise relative to each other are integrated in the semiconductor substrate.
Dependencies are inferred from the claim text.