Apparatus and Methods for Magnetic Core Inductors with Biased Permeability

摘要

Inductive elements comprising anisotropic media and biasing coils for magnetically biasing thereof and methods of manufacture and operation for use in applications such as microelectronics. Application of an electrical current through the bias coils generates a magnetic field that biases the magnetic material such that a desirable orientation of anisotropy is achieved throughout the magnetic core and enables modulation of the inductive response of the device. Electrical conductors coupled to interconnects are magnetically coupled to magnetic core layers to produce self and/or mutual inductors.

主权项

1. A method of operating an inductor assembly, the method comprising:
generating a bias magnetic field to pass through a magnetic core in a first direction, the magnetic core lying in a core plane; inducing an easy axis of magnetization in the magnetic core to orient parallel to the first direction, wherein the induced easy axis causes a hard axis of magnetization in the magnetic core to orient orthogonal to the easy axis; and generating an inductor magnetic field with an inductor coil that wraps around the magnetic core, the inductor magnetic field passing through the magnetic core in a second direction, the second direction parallel to the hard axis of magnetization.