Patent ID: 11905906
Assignee: HITACHI ASTEMO, LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H | IPC F

Claim 0:
1. A load drive device comprising:
a first switching element that is connected to a high-side of a load;
a second switching element that is connected to a low-side of the load;
a pre-driver circuit that transmits a drive instruction to the first switching element and the second switching element; and
an arithmetic device that transmits a control instruction to the pre-driver circuit,
wherein
a first monitor line and the second monitor line are connected to the arithmetic device, the first monitor line monitoring the drive instruction from the pre-driver circuit to the first switching element, and the second monitor line monitoring the drive instruction from the pre-driver circuit to the second switching element, and
the pre-driver circuit has a first control mode in which the first switching element is turned off and the drive instruction is transmitted to the second switching element before starting an engine, and a second control mode in which the second switching element is turned off and the drive instruction is transmitted to the first switching element.