Current sensor for a printed circuit board

A method for integrating a current sensor into a printed circuit board (PCB) for sensing a current flow through a first conductive path, the method comprising:

• arranging a first conductive winding into an open shape in a plane of the PCB, wherein:
• the open shape has a first end and a second end and defines a sensitive region in the plane of the PCB for sensing the current flow through the first conductive path arranged within the sensitive region;
• the first conductive winding is formed of a conductor having a plurality of turns extending across a thickness of the PCB;
• and
• the first conductive winding is spaced from an obstacle in the PCB by at least a distance from the first end to the obstacle.

A system, comprising:

• a first current sensor integrated into a first printed circuit board (PCB) for sensing a first current flow through a first conductive path, the first current sensor comprising:
• a first conductive winding forming a first open shape in a plane of the first PCB, wherein:
• the first open shape has a first end and a second end and delimits a first sensitive region in the plane of the first PCB for sensing the first current flow through the first conductive path arranged within the first sensitive region;
• the first conductive winding is formed of a first conductor having a plurality of turns extending across a thickness of the first PCB;
• and
• the first conductive winding is spaced from a first obstacle in the first PCB by at least a distance from the first end of the first open shape to the first obstacle;
• a second current sensor integrated into a second PCB for sensing a second current flow through a second conductive path, the second current sensor comprising:
• a second conductive winding forming a second open shape in a plane of the second PCB, wherein:
• the second open shape has a first end and a second end and delimits a second sensitive region in the plane of the second PCB for sensing the second current flow through the second conductive path arranged within the second sensitive region;
• the second conductive winding is formed of a second conductor having a plurality of turns extending across a thickness of the second PCB;
• and
• the second conductive winding is spaced from a second obstacle in the second PCB by at least a distance from the first end of the second open shape to the second obstacle;
• and
• a signal processing module for processing sensor signals from the first current sensor and the second current sensor, wherein:
• the signal processing module is configured to generate a current measurement for the first current flow based at least in part on a sensor signal from the second current sensor.