Patent ID: 9748941
Date: 2017-08-29
CPC Classifications: H01L,H03K

Claim:
1. A power semiconductor module comprising: a depletion-mode field effect transistor comprising a gate, a drain, and a source, the depletion-mode field effect transistor being served as a main transistor for power switching; a sense field effect transistor configured to share the gate and the drain of the depletion-mode field effect transistor, the sense field effect transistor having current driving ability less than that of the depletion-mode field effect transistor; an enhancement-mode field effect transistor having a drain, which is connected to a floating node that is the source of the depletion-mode field effect transistor so as to form a cascode structure, the enhancement-mode field effect transistor being configured to drive the depletion-mode field effect transistor; a first stabilizing circuit connected between the floating node and a source of the sense field effect transistor to perform voltage stabilization of the floating node; and a second stabilizing circuit connected between a source of the enhancement-mode field effect transistor and the source of the sense field effect transistor to perform voltage stabilization of the floating node.