发明名称 |
Current sensor with input/output isolation |
摘要 |
A current sensor and a method for measuring currents on an integrated circuit in an isolated manner. The current sensor uses a Peltier device as a thermal difference generator to generate a first temperature at a temperature generating junction and a second temperature at a second temperature generating junction. The two temperature generating junctions being spaced apart from one another and where the temperature difference between the first and second temperatures is a function of the sampled current. A Seebeck transducer operating as a thermal difference sensor has a first temperature sensing junction thermally coupled to the first temperature generating junction and a second temperature sensing junction thermally coupled to the second temperature generating junction. The thermal difference detector detects the temperature difference between the first and second temperature sensing junctions and provides a measurement signal that is indicative of the temperature difference between the two temperature sensing junctions that is indicative of the measured current.
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申请公布号 |
US2003117127(A1) |
申请公布日期 |
2003.06.26 |
申请号 |
US20010029538 |
申请日期 |
2001.12.21 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
MALE BARRY JON |
分类号 |
G01R19/22;(IPC1-7):G01R19/32 |
主分类号 |
G01R19/22 |
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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