Patent ID: 11929605
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 12:
13. The semiconductor device according to claim 11, wherein
the disconnection detection circuit includes a first series circuit of a first resistor and a first current source and a second series circuit of a second resistor and a second current source, the first series circuit and the second series circuit being connected between the first power supply terminal and the second power supply terminal,
the first and second current sources operate at a time of supply of the first and second power supply voltages and generate first current and second current, respectively,
the first reference voltage is output from a first node in the first series circuit,
when a voltage drop amount in the first resistor by the first current disappears due to occurrence of the first disconnection, a voltage at the first node changes from a voltage level at which the first switch transistor turns on to a voltage level at which the first switch transistor turns off,
the second reference voltage is output from a second node in the second series circuit, and
when a voltage drop amount in the second resistor by the second current disappears due to occurrence of the second disconnection, a voltage at the second node changes from a voltage level at which the second switch transistor turns on to a voltage level at which the second switch transistor turns off.