Patent ID: 8461824
Filing Date: 2013-06-11
Classification: G01R

Abstract:
1. A current sensor, comprising: a conductive element; at least two magnetic field sensors arranged on the conductive element and adapted to sense a magnetic field generated by a current through the conductive element, wherein the at least two magnetic field sensors are arranged on opposite sides of a line perpendicular to a current flow direction in the conductive element; an insulating layer arranged between the conductive element and the magnetic field sensors; and conductor traces that extend on the insulating layer and only on one side of the conductive element so as to avoid a closed circle of the conductor traces through which the conductive element extends, and wherein the plurality of conductor traces are arranged with a first distance from edges of the insulating layer, and wherein the conductor traces are separated from each other with a second distance, and wherein the conductor traces have a predefined width, wherein the first distance is selected to provide a maximum creepage distance, wherein the second distance is selected such that the conductor traces span a minimum area to reduce coupling of noise and disturbances, and wherein the width is selected such that the conductor traces act as a fuse in case of a short between the conductive element and leads of the sensor element.