公开(公告)号：US11128130B2

公开(公告)日：2021-09-21

申请号：US16692942

申请日：2019-11-22

申请人： Shanghai Awinic Technology Co., LTD

发明人： Xucheng Luo ,  Jiantao Cheng ,  Jianwei Hu ,  Chuankui Wu ,  Yongqiang He ,  Yan Jiang

IPC分类号： H02H3/22 ,  H02H9/04 ,  H02H11/00

摘要： A protection circuit is provided. A control circuit receives an input voltage. In a case that the input voltage is lower than a negative threshold voltage, the control circuit outputs a first control voltage to a surge bleeder circuit through a first output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a first bleeder current. In a case that the input voltage is higher than a positive threshold voltage, the control circuit outputs a second control voltage to the surge bleeder circuit through a second output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a second bleeder current.