- 专利标题: VOLTAGE AND CURRENT-SENSING-LESS SHORT-CIRCUIT PROTECTION AND LOCALIZATION FOR POWER DEVICES
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申请号: US18440073申请日: 2024-02-13
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公开(公告)号: US20240288508A1公开(公告)日: 2024-08-29
- 发明人: Hui Li , Zhehui Guo
- 申请人: The Florida State University Research Foundation, Inc.
- 申请人地址: US FL Tallahassee
- 专利权人: The Florida State University Research Foundation, Inc.
- 当前专利权人: The Florida State University Research Foundation, Inc.
- 当前专利权人地址: US FL Tallahassee
- 主分类号: G01R31/52
- IPC分类号: G01R31/52 ; G01R19/00 ; G01R19/12 ; G01R29/02 ; G01R31/26
摘要:
A short-circuit protection and localization circuit for power devices includes a first subcircuit for detecting dv/dt of a power device at turn on, a second subcircuit for short-circuit fault localization and soft turn-off of the power device, the second subcircuit including a totem-pole driver having an upper switch and a lower switch, and a third subcircuit for detecting short-circuit faults based on the output (Vdip) of the first subcircuit and the output of an upper switch (Vp) of the second subcircuit. The first subcircuit outputs a voltage (Vdip) having a magnitude that is proportional to dv/dt of the power device. The third subcircuit outputs a signal (Vsto) to the second subcircuit that causes the second subcircuit to softly turn-off the power device. The second subcircuit outputs a voltage of the upper switch (Vp) and a fault-latching signal for short-circuit localization.
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