发明授权
US06205010B1 Switch circuit having protection function to interrupt input of control signal
失效
具有保护功能的开关电路中断控制信号的输入
- 专利标题： Switch circuit having protection function to interrupt input of control signal
- 专利标题（中）： 具有保护功能的开关电路中断控制信号的输入
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申请号： US08970755申请日： 1997-11-14
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公开(公告)号： US06205010B1公开(公告)日： 2001-03-20
- 发明人: Ichiro Ohsaka , Tatsuya Yoshida , Mitsuru Kon'i , Kaneyuki Okamoto , Mitsuhiko Watanabe
- 申请人： Ichiro Ohsaka , Tatsuya Yoshida , Mitsuru Kon'i , Kaneyuki Okamoto , Mitsuhiko Watanabe
- 优先权： JP8-303018 19961114
- 主分类号： H02H302
- IPC分类号： H02H302
摘要：
In an electric power switch circuit with an overcurrent or overheating protection function, unnecessary ON-OFF cycling is prevented. A MOSFET is used as an electric power element for energizing a load according to a control signal. A temperature detector detects the temperature in the neighborhood of the MOSFET, and a control unit opens a switch, interrupting input of the control signal to the MOSPET when the temperature detected by the temperature detecting means is higher than the predetermined temperature. An interruption status retaining device maintains the interruption of the control signal, preventing repetitive ON-OFF cycling.
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