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1. 发明公开

EP1278070A3 Method and apparatus for low cost current and voltage sensing in circuits as a function of a voltage drop 审中-公开
标题翻译：响应于电压降的方法和装置用于在电路成本效益的电流和电压确定
公开(公告)号：EP1278070A3
公开(公告)日：2005-02-16
申请号：EP02255019.8
申请日：2002-07-17
申请人： Power Integrations, Inc.
发明人： Balakrishnam, Balu , Odell, Arthur B.
IPC分类号： G01R19/165 , G01R15/22
CPC分类号： G01R19/16571 , G01R19/0084 , G01R19/0092 , G01R19/16523 , G01R31/40
摘要： Method and apparatus to sense current and voltage in circuits as a function of a voltage drop. In one aspect of the invention, a sense circuit (147) includes a series combination of a diode (157) and a resistor (155) in the path of the current to be sensed, the voltage across this series combination coupled to drive a light emitting diode (LED) (159).

2. 发明公开

EP1750137A2 Method and apparatus for low cost current and voltage sensing in circuits as a function of a voltage drop 审中-公开
标题翻译：与电压降低成本的电流和电压感测电路的方法和装置
公开(公告)号：EP1750137A2
公开(公告)日：2007-02-07
申请号：EP06013466.5
申请日：2002-07-17
申请人： Power Integrations, Inc.
发明人： Balakrishnam, Balu , Odell, Arthur B.
IPC分类号： G01R19/165 , G01R15/22
CPC分类号： G01R19/16523
摘要： Methods and apparatus to sense current and voltage in circuits with voltage drop. In one aspect of the invention, a voltage sense circuit coupled across an output includes a voltage reference coupled to the output to drive a base of a bipolar transistor (161) coupled to the output when a voltage across the output exceeds a sense voltage of the voltage sense circuit; and a compensation circuit including a first resistor (169) coupled to the output and the bipolar transistor (161), the compensation circuit further including a second resistor (171), the second resistor (171) coupled between the first resistor (169) and the base of the bipolar transistor (161) such that a sum of a voltage drop across the first resistor (169) and a forward base emitter voltage of the bipolar transistor (161) is to be applied across the second resistor (171), the sense voltage of the voltage sense circuit varied in response to a current through the second resistor (171).
摘要翻译：的方法和装置，以感测电流和电压与电压降电路。在本发明的一个方面中，在输出端跨接在电压感测电路包括：耦合到所述输出。当在输出的电压超过的感测电压，以驱动连接到输出端的双极型晶体管（161）的基极的参考电压电压感测电路; 和一补偿电路，其包括耦合到所述输出和所述双极型晶体管（161）的第一电阻器（169），该补偿电路还包括第二电阻器（171），耦合在所述第一电阻器（169）之间的第二电阻器（171）和双极型晶体管的（161）的基检查做跨第一电阻器（169）和所述双极型晶体管（161）的正向基极发射极电压的电压降的总和是跨第二电阻器（171）被施加时，电压感测电路的感测电压，响应通过所述第二电阻器（171）改变为电流。

3. 发明授权

EP1720230B1 Power supply with current sensing circuit 有权
标题翻译：电源与电流测量电路
公开(公告)号：EP1720230B1
公开(公告)日：2012-02-29
申请号：EP06252367.5
申请日：2006-05-04
申请人： Power Integrations, Inc.
发明人： Balakrishnam, Balu , Odell, Arthur B.
IPC分类号： H02J7/02 , G01R19/165
CPC分类号： G01R19/16552 , H02J5/00 , H02J7/02 , H02J7/025
摘要： Techniques are disclosed to sense a current in a circuit. For instance, current sense circuit according to the teachings of the present invention includes a current sense resistor (R5) coupled to an input of the current sense circuit. The current sense resistor is coupled to receive a current to be sensed (lout) from the input of the current sense circuit. The current to be sensed is converted to a current sense voltage (Vsense). A first PN junction diode is coupled to the current sense resistor. A light emitting diode (LED) (201) is coupled to the first PN junction diode to provide a current sense threshold substantially proportional to a difference between a forward voltage drop of the LED and a forward voltage drop of the first PN junction diode. The first PN junction diode is coupled to be biased from the forward voltage drop of the LED. The LED is coupled to the current sense resistor to generate an output when the current sense voltage from the current sense resistor reaches the current sense threshold.

4. 发明公开

EP1720230A1 Power supply with current sensing circuit 有权
标题翻译： Stromversorgung mit Strommessschaltung
公开(公告)号：EP1720230A1
公开(公告)日：2006-11-08
申请号：EP06252367.5
申请日：2006-05-04
申请人： Power Integrations, Inc.
发明人： Balakrishnam, Balu , Odell, Arthur B.
IPC分类号： H02J7/02 , G01R19/165
CPC分类号： G01R19/16552 , H02J5/00 , H02J7/02 , H02J7/025
摘要： Techniques are disclosed to sense a current in a circuit. For instance, current sense circuit according to the teachings of the present invention includes a current sense resistor (R5) coupled to an input of the current sense circuit. The current sense resistor is coupled to receive a current to be sensed (lout) from the input of the current sense circuit. The current to be sensed is converted to a current sense voltage (Vsense). A first PN junction diode is coupled to the current sense resistor. A light emitting diode (LED) (201) is coupled to the first PN junction diode to provide a current sense threshold substantially proportional to a difference between a forward voltage drop of the LED and a forward voltage drop of the first PN junction diode. The first PN junction diode is coupled to be biased from the forward voltage drop of the LED. The LED is coupled to the current sense resistor to generate an output when the current sense voltage from the current sense resistor reaches the current sense threshold.
摘要翻译：公开了用于感测电路中的电流的技术。例如，根据本发明的教导的电流检测电路包括耦合到电流检测电路的输入的电流检测电阻器（R5）。电流检测电阻器被耦合以从电流检测电路的输入接收要感测的电流（输出）。要感测的电流被转换为电流检测电压（Vsense）。第一PN结二极管耦合到电流检测电阻器。发光二极管（LED）（201）耦合到第一PN结二极管，以提供与LED的正向压降和第一PN结二极管的正向压降之间的差基本成比例的电流检测阈值。第一PN结二极管被耦合以从LED的正向压降偏置。当来自电流检测电阻器的电流感测电压达到电流检测阈值时，LED耦合到电流检测电阻器以产生输出。

5. 发明公开

EP1750137A3 Method and apparatus for low cost current and voltage sensing in circuits as a function of a voltage drop 审中-公开
标题翻译：与电压降低成本的电流和电压感测电路的方法和装置
公开(公告)号：EP1750137A3
公开(公告)日：2007-07-11
申请号：EP06013466.5
申请日：2002-07-17
申请人： Power Integrations, Inc.
发明人： Balakrishnam, Balu , Odell, Arthur B.
IPC分类号： G01R19/165 , G01R15/22
CPC分类号： G01R19/16523
摘要： Methods and apparatus to sense current and voltage in circuits with voltage drop. In one aspect of the invention, a voltage sense circuit coupled across an output includes a voltage reference coupled to the output to drive a base of a bipolar transistor (161) coupled to the output when a voltage across the output exceeds a sense voltage of the voltage sense circuit; and a compensation circuit including a first resistor (169) coupled to the output and the bipolar transistor (161), the compensation circuit further including a second resistor (171), the second resistor (171) coupled between the first resistor (169) and the base of the bipolar transistor (161) such that a sum of a voltage drop across the first resistor (169) and a forward base emitter voltage of the bipolar transistor (161) is to be applied across the second resistor (171), the sense voltage of the voltage sense circuit varied in response to a current through the second resistor (171).

6. 发明公开

EP1278070A2 Method and apparatus for low cost current and voltage sensing in circuits as a function of a voltage drop 审中-公开
标题翻译：响应于电压降的方法和装置用于在电路成本效益的电流和电压确定
公开(公告)号：EP1278070A2
公开(公告)日：2003-01-22
申请号：EP02255019.8
申请日：2002-07-17
申请人： Power Integrations, Inc.
发明人： Balakrishnam, Balu , Odell, Arthur B.
IPC分类号： G01R19/165
CPC分类号： G01R19/16571 , G01R19/0084 , G01R19/0092 , G01R19/16523 , G01R31/40
摘要： Method and apparatus to sense current and voltage in circuits as a function of a voltage drop. In one aspect of the invention, a sense circuit (147) includes a series combination of a diode (157) and a resistor (155) in the path of the current to be sensed, the voltage across this series combination coupled to drive a light emitting diode (LED) (159).
摘要翻译：方法和装置，以感测电流和电压的电路中，作为电压降的函数。在本发明的一个方面，一种感测电路（147）包括一个二极管（157）和在当前的路径中的电阻器（155）的串联组合将被感测，横跨连接以驱动光这一串联组合的电压发光二极管（LED）（159）。

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