Patent ID: 7129691

Claim:
A current sensor comprising: a housing of molded plastics; a metallic current conductor through which a current to be measured flows; a magnetic field sensor chip containing at least one magnetic field detection element, the magnetic field sensor chip being placed on a side of the current conductor; a flux concentrator placed on the magnetic field sensor chip for urging a flux generated by the current flowing through the current conductor to pass through the at least one magnetic field detection element; a plurality of input and output terminals, each of the input and output terminals having an end that is electrically connected to a corresponding terminal of the magnetic field sensor chip, wherein a portion of the current conductor carrying the magnetic field sensor chip lies in a first plane and said ends of the input and output terminals lie in a second plane oriented substantially parallel to the first plane, and wherein a distance between the first and second plane substantially disappears or is substantially the same as a thickness of the magnetic field sensor chip; a first magnetic material located on a backside of the current conductor, said backside located opposite to the side that the magnetic field sensor chip is placed on; and a second magnetic material located above the magnetic field sensor chip.