DRIVE DEVICE

• Main Authors: YAHATA KOUICHI, SAKAMOTO HIDEYUKI, HIROTSU TEPPEI, KADOTA KEIJI, INADA RYOICHI
• Format: Patent
• Language: Chinese; English
• Published: 20.03.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The purpose of the present invention is to diagnose an abnormality detection circuit for detecting an abnormality such as an overcurrent in a power semiconductor while minimizing any increase in the number of insulating elements additionally provided. This invention is provided with a drive circuit 11 for outputting a gate signal to the power semiconductor 6, an abnormality detection circuit 12 for detecting an abnormality in the power semiconductor 6, and a diagnosis signal application circuit 14 for applying a diagnosis signal to the abnormality detection circuit 12. The diagnosis signal application circuit 14 applies the diagnosis signal on the basis of the gate signal outputted by the drive circuit. 本发明的目的在于方面抑制因追加设置的绝缘元件的增加、另方面进行检测功率半导体的过电流等异常的异常检测电路的诊断。本发明的驱动装置具备：激励电路(11)，其对功率半导体(6)输出门极信号；异常检测电路(12)，其检测功率半导体(6)的异常；以及诊断信号施加电路(14)，其对异常检测电路(12)施加诊断用信号，诊断信号施加电路(14)根据激励电路(11)所输出的门极信号来施加诊断用信号。