发明名称 |
Circuit protection |
摘要 |
An apparatus (100) for protecting a circuit (200) from an input voltage comprises a switchable element (10) arranged to couple the input voltage (V IN ) to the circuit (200) in response to a first control signal (DRV1) having a first value and to decouple the input voltage (V IN ) from the circuit (200) in response to the first control signal (DRV1) having a second value. A monitor stage (20) compares a monitored voltage (V MON ) to a threshold (V TH ). A controller (30) provides the first control signal (DRV1) to the switchable element (10), the first control signal (DRV1) having the first value when the monitored voltage (V MON ) is on one side of the threshold (V TH ) and the second value when the monitored voltage (V MON ) is on the other side of the threshold (V TH ), wherein the first value is independent of the input voltage (V IN ) and the second value is equal to the input voltage (V IN ). |
申请公布号 |
EP2461457(A1) |
申请公布日期 |
2012.06.06 |
申请号 |
EP20100425368 |
申请日期 |
2010.12.02 |
申请人 |
ST-ERICSSON SA |
发明人 |
ZAMPROGNO, MARCO;MINUTI, ALBERTO;NICOLLINI, GERMANO |
分类号 |
H02H3/20;H02J1/10;H02J7/00;H02J7/34 |
主分类号 |
H02H3/20 |
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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