| 摘要 |
PROBLEM TO BE SOLVED: To discriminately detect anomalies such as a load disconnection, a GND short circuit and a source voltage drop.SOLUTION: A load drive circuit having a first control circuit 20A connected between a load 10 connected to a first voltage source 11 and GND to control a current flowing through the load 10 to a predetermined value includes: a second control circuit 30A for detecting a voltage Va at a node N1 and controlling the voltage Va to a predetermined value; a first voltage detection circuit 60 for detecting a voltage V1 of the first voltage source 11; a second voltage detection circuit 70 for detecting the voltage Va at the node N1; and an anomaly determination circuit for making an anomaly determination on the basis of the content of the control action of the second control circuit 30A, the detection result of the first voltage detection circuit 60, and the detection result of the second voltage detection circuit 70. |
