Patent ID: 11923673
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
a switching device including a main portion and a current sensing portion for detecting a current value of the main portion;
a control IC including a gate drive unit that drives the switching device;
a sensing resistor connected between an emitter of the main portion and an emitter of the current sensing portion and formed inside the control IC;
a comparator comparing a sense voltage applied to the sensing resistor with a reference voltage; and
a shut-down circuit shutting down an energization of the switching device when the sense voltage exceeds the reference voltage, wherein
the sense voltage is more than or equal to 1 V when the energization of the switching device is shut down,
the gate drive unit includes a first gate drive unit driving the main portion, and a second gate drive unit driving the current sensing portion, and
an output voltage of the second gate drive unit is higher than an output voltage of the first gate drive unit.