Current sensor and method of manufacturing the same

Details Current sensor and method of manufacturing the same Current sensor and method of manufacturing the same

2008-07-15

2008-07-15

Nguyen, Ha (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

C324S251000, C327S511000, C338S03200R

Reexamination Certificate

active

07400132

ABSTRACT:
A current sensor includes a semiconductor substrate, a ring shaped magnetic core having a center opening and a gap and provided to a surface of the substrate, and a Hall element provided to the surface and placed in the gap of the magnetic core such that a control current for operating the Hall element flows perpendicular to the surface of the substrate. The magnetic core and the Hall element are formed to the substrate by semiconductor manufacturing techniques. Therefore, the Hall element can be placed in the gap to be accurately positioned with respect to the magnetic core and the gap can have a reduced separation distance. Thus, the current sensor can have an increased sensitivity and accurately measure a current to be detected.

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