公开(公告)号：US20240048044A1

公开(公告)日：2024-02-08

申请号：US18218114

申请日：2023-07-05

申请人： ZHEJIANG UNIVERSITY

发明人： Faxin YU ,  Yihe WANG ,  Xiaofeng LV ,  Hua CHEN ,  Jiongjiong MO ,  Zhiyu WANG

IPC分类号： H02M1/12 ,  H02M1/00 ,  H02M1/15 ,  H02M3/158

CPC分类号： H02M1/12 ,  H02M1/0022 ,  H02M1/15 ,  H02M3/158

摘要： The present disclosure provides an adapter circuit including a bus capacitor, a PMOS power transistor, and a sampling control module; a positive terminal of the bus capacitor is connected to a DC bus voltage, and a negative terminal of the bus capacitor is connected to a drain of the PMOS power transistor; a gate of the PMOS power transistor is connected to a drive signal, and a source of the PMOS power transistor is grounded; the sampling control module is used to obtain the drive signal by detecting an AC mains input voltage and a power-down voltage when the bus discharges, so as to turn off the PMOS power transistor after the AC mains input voltage reaches a peak value, and turn on the PMOS power transistor after the power-down voltage reaches a set voltage; the drive signal includes a PMOS Turn-on signal and a PMOS Turn-off signal.