Patent ID: 7129692
Filing Date: 2006-10-31
Classification: G01R,H01L

Abstract:
1. A semiconductor device comprising: a semiconductor element having a gate terminal; a current detection equipment including; a substrate, a first coil and a second coil provided on the substrate, and a resistance; a first circuit connected to the current detection equipment; a second circuit connected to the gate terminal; each of the first and second coils having first conductive patterns provided on a surface of the substrate, second conductive patterns provided on a back of the substrate and connecting parts which connect the first and second conductive patterns; the first coil and the second coil being connected in series, and the resistance connected in parallel to the first and second coils; at least a part of a current flowing in the semiconductor element being detected by the current detection equipment; and the second circuit providing a signal to the gate terminal based on a signal outputted from the first circuit.