Patent ID: 9748025
Date: 2017-08-29
CPC Classifications: G01R,H01C,H01L,H02H

Claim:
1. A magnetoresistive current limiter, comprising: a substrate, an input electrode, an output electrode, a magnetoresistive sensor layer, a first insulating layer, a coil, a second insulating layer and a magnetic shield layer; wherein the coil is located between the magnetic shield layer and the magnetoresistive sensor layer, the first insulating layer isolates the coil from the magnetoresistive sensor layer, and the second insulating layer isolates the coil from the magnetic shield layer; and wherein the magnetoresistive sensor layer comprises N rows of array-type magnetic tunnel junction lines, N is an integer greater than 1, each row of magnetic tunnel junction lines comprise one or more interconnected magnetic tunnel junction units, the magnetic tunnel junction lines form a two-port structure of the magnetoresistive sensor layer in a mode of series connection, parallel connection or a combination of series connection and parallel connection, the coil also has a two-port structure, one port of the magnetoresistive sensor layer is connected with one port of the coil, the other port of the magnetoresistive sensor layer is connected with the input electrode, and the other port of the coil is connected with the output electrode; and current flows into the magnetoresistive sensor layer via the input electrode and then flows out of the output electrode via the coil.