Patent ID: 8957668
Filing Date: 2015-02-17
Classification: G01R,H01L

Abstract:
1. An integrated current sensor comprising: a semiconductor body arranged on a metal substrate, having a first surface with a passivation layer formed on the first surface; a magnetic field concentrator formed in a flat manner under the semiconductor body; a first Hall-effect sensor arranged under the passivation layer in the semiconductor body; a second Hall-effect sensor arranged under the passivation layer in the semiconductor body; and a first conductor arranged on the first surface separately from and overlapping with, the metal substrate between the first Hall-effect sensor and the second Hall-effect sensor, wherein the magnetic field concentrator is arranged under the first Hall-effect sensor and under the second Hall-effect sensor and under the first conductor, wherein the first Hall-effect sensor is arranged at least in part under a first metal surface in an opening of the passivation layer, and wherein the second Hall effect sensor is arranged at least in part under a second metal surface in an opening in the passivation layer, wherein the first metal surface and the second metal surface are connected to a ferromagnetic first wire formed above the passivation layer, and wherein the first conductor is guided through under the first wire at a predetermined distance.