发明名称 |
A DC current regulator insensitive to conducted EMI |
摘要 |
A DC current regulator circuit comprises a first circuit node (32) which is operable to receive an external input voltage. A transistor (M1) has an input, a first leg and a second leg. The first leg of the transistor is isolated from the first circuit node (32). An amplifier (10) has an output connected to the input of the transistor (M1), a first amplifier input for receiving a reference voltage (V REF ) and a second amplifier input connected to the first circuit node (32). A low-pass filter(33) connects between the output of the amplifier and the first circuit node (32). A current mirror (36) connects in series with the second leg of the transistor (M1) and has a first branch (38) for providing a regulated output current and a second branch (37) which connects to the first circuit node (32). The current regulator has reduced sensitivity to conducted EMI received at the first circuit node (32). |
申请公布号 |
EP1806639(A1) |
申请公布日期 |
2007.07.11 |
申请号 |
EP20060447005 |
申请日期 |
2006.01.10 |
申请人 |
AMI SEMICONDUCTOR BELGIUM BVBA |
发明人 |
REDOUTE, JEAN-MICHEL VLADIMIR;STEYAERT, MICHIEL |
分类号 |
G05F1/56;G05F3/26 |
主分类号 |
G05F1/56 |
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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