发明名称 |
Sensor node voltage clamping circuit and method |
摘要 |
A voltage clamping circuit includes a current source having a fixed current source and a variable current source and a variable resistor receiving current from the current source. The variable resistor varies its resistance in response to an environmental operating condition. The voltage clamping circuit also includes an amplifier configured to compare a sensor node voltage with a reference voltage, the sensor node voltage being in communication with the voltage drop across the variable resistor. The amplifier is configured and connected to provide a control output to control the variable current source to modify current output from the variable current source to at least in part prevent the sensor node voltage from exceeding a reference voltage when certain operating conditions are present. |
申请公布号 |
US8111047(B2) |
申请公布日期 |
2012.02.07 |
申请号 |
US20080199102 |
申请日期 |
2008.08.27 |
申请人 |
BETTY CHRISTOPHER LEE;BROHLIN PAUL L.;KHANCHANDANI DEEPAK MOHANLAL;TEXAS INSTRUMENTS INCORPORATED |
发明人 |
BETTY CHRISTOPHER LEE;BROHLIN PAUL L.;KHANCHANDANI DEEPAK MOHANLAL |
分类号 |
H02J7/04;H02H3/00;H03H5/10 |
主分类号 |
H02J7/04 |
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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