发明名称 |
Solid state switch with quasi-predictive short circuit protection and thermal protection |
摘要 |
A protection circuit detects short circuit and/or current overload conditions based on one of a current level and a current change rate di/dt of a current through a load. A detection device uses an inductor to detect current change rate and a resistor to detect current level, and generates a first voltage signal based on the voltages of the inductor and the resistor. A comparator generates a second voltage signal based on the voltage signal and a reference voltage signal. A switching circuit allows or interrupts current through the load based in part on the second voltage.
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申请公布号 |
US7265959(B2) |
申请公布日期 |
2007.09.04 |
申请号 |
US20050043009 |
申请日期 |
2005.01.25 |
申请人 |
YAZAKI NORTH AMERICA, INC. |
发明人 |
GUO SAM Y |
分类号 |
H02H3/08 |
主分类号 |
H02H3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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