CPC G01R 33/093 (2013.01) [G01R 33/07 (2013.01)] | 10 Claims |
1. A magnetic isolator, comprising:
a substrate;
a magnetic field generating unit;
a magnetic field sensing unit;
a shielding layer; and
an isolation dielectric,
wherein the magnetic field generating unit comprises a current conductor, the current conductor is arranged to extend along a first direction on one side of the substrate, the magnetic field sensing unit and the current conductor are arranged on the same side of the substrate, the magnetic field sensing unit is located on a lateral side of the current conductor, and a distance between the current conductor and the magnetic field sensing unit is greater than 0 along a second direction, wherein the first direction is perpendicular to the second direction;
an isolation dielectric is arranged between the current conductor and the magnetic field sensing unit; the current conductor comprises an input terminal, a current signal inputted from the input terminal flows through the current conductor to generate a magnetic field around the current conductor, the magnetic field has a component in a sensitive direction of the magnetic field sensing unit, and an output signal sensed by the magnetic field sensing unit is directly proportional to the magnetic field generated around the current conductor; and
the shielding layer and the magnetic field generating unit are located on the same side of the substrate, and the shielding layer is located on one side of the magnetic field generating unit close to the substrate and/or away from the substrate, to absorb external interfering magnetic fields and prevent leakage of the magnetic field generated around the current conductor of the magnetic field generating unit.
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