| 摘要 |
A current sensor includes a printed circuit and current lines. The printed circuit comprises a stack, along a vertical direction, of metallization layers mechanically separated by electrically insulating layers, and a measurement or excitation coil wound around a vertical winding axis. The coil is formed by conductive tracks made in at least one metallization layer. One or more current lines are positioned in a plane parallel to the layers and are configured to be supplied with currents to be measured. The coil comprises turns formed by conductive tracks, made in respective metallization layers, electrically connected to one another by pads passing through at least one of the electrically insulating layers, to form a coil that extends along the vertical winding axis. |
| 主权项 |
1. An apparatus for sensing current comprising a printed circuit and one or more current lines, wherein said printed circuit comprises a stack, along a vertical direction, of several metallization layers mechanically separated from one another by electrically insulating layers, and at least one of a measurement coil and an excitation coil wound around a vertical winding axis in the vertical direction, said at least one of a measurement coil and an excitation coil being formed by conductive tracks made in at least one of said several metallization layers, and wherein said one or more current lines are positioned in parallel to a plane defined by said metallization layers, said one or more current lines being configured to be supplied with one or more currents to be measured, wherein said at least one of a measurement coil and an excitation coil comprises turns formed by conductive tracks, made in respective metallization layers, electrically connected to one another by pads passing through at least one of said electrically insulating layers, to form a coil that extends along said vertical winding axis;
wherein said at least one of a measurement coil and an excitation coil comprises a first measurement coil and a second measurement coil, and wherein each current line comprises at least one first conductive track and one second conductive track passing between said first measurement coil and said second measurement coils, said first conductive track and said second conductive track being made in respective metallization layers positioned one above the other, and an electrical connection setting up a series connection between said first conductive track and said second conductive track without passing between said first measurement coil and said second measurement coil, said electrical connection forming, with said first conductive track and said second conductive track, a loop completely surrounding at least one of said measurement coils so that, when said loop is powered, current passes several times in the same sense between said first measurement coil and said second measurement coil. |
