公开(公告)号：US20220393460A1

公开(公告)日：2022-12-08

申请号：US17341942

申请日：2021-06-08

申请人： CREE, INC.

发明人： Adam E. ANDERS

IPC分类号： H02H7/125 ,  H02H7/09 ,  H02H7/08

摘要： A power device fault detection circuit includes a first fault detector configured to measure an output signal of at least one power device and output a first fault signal when a voltage of the output signal of the at least one power device exceeds a first voltage reference level after a first time period; and a second fault detector configured to measure an output signal of the at least one power device and output a second fault signal when a voltage of the output signal of the at least one power device exceeds a second voltage reference level after a second time period, where the first time period implemented by the first fault detector is shorter than the second time period implemented by the second fault detector.