公开(公告)号：US11835553B2

公开(公告)日：2023-12-05

申请号：US17703485

申请日：2022-03-24

申请人： Hangzhou Lianxintong Semiconductor Co., Ltd.

发明人： Li-Yu Chiu ,  Hsin-Hsien Li

IPC分类号： G01R27/02 ,  G01R19/175 ,  H03K5/1536 ,  H02M1/08 ,  H02M7/06

CPC分类号： G01R19/175 ,  H02M1/083 ,  H03K5/1536 ,  H02M7/06

摘要： The present disclosure discloses a zero-crossing detection circuit, including: a zero-crossing judgment module, having a first end and a second end, wherein the first end is connected to a power supply and the second end is grounded; a photoelectric coupler, connected to the zero-crossing judgment module; an optocoupler driving module, connected to the photoelectric coupler; and an energy storage capacitor, wherein the energy storage capacitor is configured to provide excitation power for the photoelectric coupler and the optocoupler driving module.

公开(公告)号：US11761993B2

公开(公告)日：2023-09-19

申请号：US17690453

申请日：2022-03-09

申请人： Hangzhou Lianxintong Semiconductor Co., Ltd.

发明人： Hsin-Hsen Li ,  Li-Yu Chiu

IPC分类号： G01R19/175

CPC分类号： G01R19/175

摘要： The present disclosure discloses a zero-crossing detection circuit, including: a zero-crossing judgment circuit, configured to detect a zero-crossing signal; and an energy storage capacitor, connected to the zero-crossing judgment circuit in parallel, wherein the energy storage capacitor is configured to provide excitation current for the zero-crossing judgment circuit.

公开(公告)号：US20230194578A1

公开(公告)日：2023-06-22

申请号：US17703485

申请日：2022-03-24

申请人： Hangzhou Lianxintong Semiconductor Co., Ltd.

发明人： Li-Yu Chiu ,  Hsin-Hsien Li

IPC分类号： G01R19/175 ,  H02M1/08 ,  H03K5/1536

CPC分类号： G01R19/175 ,  H02M1/083 ,  H03K5/1536 ,  H02M7/06

摘要： The present disclosure discloses a zero-crossing detection circuit, including: a zero-crossing judgment module, having a first end and a second end, wherein the first end is connected to a power supply and the second end is grounded; a photoelectric coupler, connected to the zero-crossing judgment module; an optocoupler driving module, connected to the photoelectric coupler; and an energy storage capacitor, wherein the energy storage capacitor is configured to provide excitation power for the photoelectric coupler and the optocoupler driving module.