发明申请
- 专利标题： Current sense shunt resistor circuit
- 专利标题（中）： 电流检测分流电阻电路
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申请号： US10625029申请日： 2003-07-22
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公开(公告)号： US20050017760A1公开(公告)日： 2005-01-27
- 发明人: Massimo Grasso , Aldo Torti , Andrea Merello , Jonas Aleksandravicius
- 申请人： Massimo Grasso , Aldo Torti , Andrea Merello , Jonas Aleksandravicius
- 专利权人： International Rectifier Corporation
- 当前专利权人： International Rectifier Corporation
- 主分类号： G01R1/20
- IPC分类号： G01R1/20 ; G01R19/00 ; H03D1/00
摘要：
Current through a wire is sensed with a shunt resistor and a sense resistor in a current divider circuit. The values of the shunt resistor and sense resistor are related to provide a specified gain ratio to increase a dynamic range of current measurement. The sense resistor is a trimmable resistor, the configuration of which can be discerned from a look-up table based on a level of precision needed for current measurement. The two resistors can also be related by thermal coefficients to improve linearity of current measurements.
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