Magnetic current sensing

A circuit comprising:

• a first magnetic field sensor having a first sensor output, the first magnetic field sensor proximate a first conductive structure and configured to provide a first sensor signal at the first sensor output;
• a second magnetic field sensor having a second sensor output, the second magnetic field sensor proximate a second conductive structure and configured to provide a second sensor signal at the second sensor output;
• and
• a combiner circuit having first and second combiner inputs and a combiner output, the first combiner input coupled to the first sensor output, the second combiner input coupled to the second sensor output, and the combiner circuit configured to, responsive to the first and second sensor signals, provide a measurement signal of a first current signal through the first conductive structure or a second current signal through the second conductive structure at the combiner output.

A system comprising:

• switches coupled between a power input and first and second switch outputs, the switches also having switch control inputs;
• a first conductive structure coupled between the first switch output and a first power output;
• a second conductive structure coupled between the second switch output and a second power output;
• a first magnetic field sensor having a first sensor output, the first magnetic field sensor proximate the first conductive structure and configured to provide a first sensor signal at the first sensor output;
• a second magnetic field sensor having a second sensor output, the second magnetic field sensor proximate the second conductive structure and configured to provide a second sensor signal at the second sensor output;
• a current sense circuit having first and second sensor inputs and first and second measurement outputs, the first sensor input coupled to the first sensor output, the second sensor input coupled to the second sensor output, and the current sense circuit configured to, responsive to the first and second sensor signals:
• provide a first measurement signal of a first current signal through the first conductive structure at the first measurement output;
• and
• provide a second measurement signal of a second current signal through the second conductive structure at the second measurement output;
• and
• a controller having first and second control inputs and control outputs, the first control input coupled to the first measurement output, the second control input coupled to the second measurement output, and the control outputs coupled to the switch control inputs.