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US 2013/0076341 A1Published application
High current sensors
AssigneeInfineon Technologies AG
InventorUdo Ausserlechner
Life of this patent
Estimating the term…
Abstract
Embodiments relate to high current sensors having generally flat conductors. In an embodiment, the conductor is formed of a non-magnetic material such as copper or aluminum and has a coarse slot, one that reduces the cross-sectional area for current flow by a factor of about two. The slot also functions as an aperture in which the sensor package can mounted, thereby protected from environmental influences.
Claims25
A current sensor comprising:
- a current rail comprising a slot formed therein and configured to create a constricted current flow area in the current rail, the slot having a length and a width, the length being greater than the width and the width being parallel to a current flow direction in the current rail;
- and
- a sensor package comprising at least one sensor element arranged on a substrate, the sensor package arranged within the slot.
A current sensor comprising:
- a current rail comprising a slot formed therein and configured to create a constricted current flow area in the current rail, the slot having a length and a width, the length being greater than the width and the width being parallel to a current flow direction in the current rail, the current rail having a length, a width and a depth, the length and the width each being greater than the depth;
- a board coupled to the current rail such that the depth of the current rail extends upwardly from the board;
- and
- a sensor package comprising at least one sensor element arranged on a substrate, the sensor package arranged within the slot.
1 more element
A method comprising:
- coupling a sensor package to a current rail by arranging the sensor package within a slot formed in the current rail, the slot having a length and a width, the length being greater than the width;
- causing current to flow in the current rail in a direction orthogonal to the length of the slot;
- and
- sensing a magnetic field related to the current flowing in the current rail by at least one sensor element in the sensor package.
1 more element
Dependencies are inferred from the claim text.