发明名称 |
Protection circuit and method for switching power supply |
摘要 |
A protection circuit arranged in a switching power supply system for protecting the switching power supply system is provided. The protection circuit includes a detecting circuit electrically connected to a switching controller of the switching power supply system for providing a trigger signal when a supply voltage drops to an under-voltage level, and a protection circuit electrically connected to the detecting circuit for providing a signal to protect the switching power supply system when the detecting circuit provides the trigger signal to the protection circuit. A method for protecting an switching power supply system is provided. The method includes the steps of detecting that the reference voltage signal disappears when the supply voltage is smaller than a minimum of operating voltage and providing a trigger signal, and providing an protection to protect the switching power supply system in response to the trigger signal.
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申请公布号 |
US2002015318(A1) |
申请公布日期 |
2002.02.07 |
申请号 |
US20010911943 |
申请日期 |
2001.07.24 |
申请人 |
DELTA ELECTRONICS, INC. |
发明人 |
CHIN-HOU CHEN;KUO-JUNG WANG |
分类号 |
H02M1/00;H02M3/335;(IPC1-7):H02H7/122 |
主分类号 |
H02M1/00 |
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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