公开(公告)号：EP0675584B1

公开(公告)日：1999-01-13

申请号：EP94830148.6

申请日：1994-03-29

Applicant: STMicroelectronics S.r.l.

Inventor： Bertolini, Luca

IPC: H02H9/04 ,  H03K17/08

CPC classification number: H02H9/047 ,  H03K17/0822 ,  H03K2217/0036

公开(公告)号：EP0915346A3

公开(公告)日：2000-12-27

申请号：EP98120634.5

申请日：1998-11-03

Applicant: STMicroelectronics S.r.l.

Inventor： Bertolini, Luca

IPC: G01R19/00 ,  G01R19/10

CPC classification number: G01R19/0023

Abstract: A current sensing circuit with high input impedance comprises a first transconductance amplifier (8) connected across the terminals (A,B) of a resistor, through which a current to be measured flows. A voltage amplifier (7) is cascade-connected to the first transconductance amplifier (8). A second transconductance amplifier (9) is feedback connected between an output of the voltage amplifier (7) and a virtual ground node (C) of the voltage amplifier (7). A ratio between the output voltage (Vo) of the voltage amplifier (7) and the voltage across the resistor are equal, in absolute value, to a ratio of the transconductances (gm1,gm2) of the first and second transconductance amplifiers (8,9).

公开(公告)号：EP0915346A2

公开(公告)日：1999-05-12

申请号：EP98120634.5

申请日：1998-11-03

Applicant: STMicroelectronics S.r.l.

Inventor： Bertolini, Luca

IPC: G01R19/00 ,  G01R19/10

CPC classification number: G01R19/0023

Abstract: A current sensing circuit with high input impedance comprises a first transconductance amplifier (8) connected across the terminals (A,B) of a resistor, through which a current to be measured flows. A voltage amplifier (7) is cascade-connected to the first transconductance amplifier (8). A second transconductance amplifier (9) is feedback connected between an output of the voltage amplifier (7) and a virtual ground node (C) of the voltage amplifier (7). A ratio between the output voltage (Vo) of the voltage amplifier (7) and the voltage across the resistor are equal, in absolute value, to a ratio of the transconductances (gm1,gm2) of the first and second transconductance amplifiers (8,9).

Abstract translation: 具有高输入阻抗的电流感测电路包括跨越电阻器的端子（A，B）的第一跨导放大器（8），待测电流流过该电阻。 电压放大器（7）级联连接到第一跨导放大器（8）。 第二跨导放大器（9）反馈连接在电压放大器（7）的输出端和电压放大器（7）的虚拟接地节点（C）之间。 电压放大器（7）的输出电压（Vo）与电阻器两端的电压之间的比值以绝对值相等于第一和第二跨导放大器（8,8）的跨导（gm1，gm2） 9）。

公开(公告)号：EP0896422B1

公开(公告)日：2003-05-07

申请号：EP97830420.2

申请日：1997-08-08

Applicant: STMicroelectronics S.r.l.

Inventor： Galbiati, Ezio ,  Boscolo, Michele ,  Bertolini, Luca

IPC: H02P1/00 ,  H02P6/08

CPC classification number: H02P6/085 ,  H02P6/28

公开(公告)号：EP0896422A1

公开(公告)日：1999-02-10

申请号：EP97830420.2

申请日：1997-08-08

Applicant: STMicroelectronics S.r.l.

Inventor： Galbiati, Ezio ,  Boscolo, Michele ,  Bertolini, Luca

IPC: H02P1/00 ,  H02P6/08

CPC classification number: H02P6/085 ,  H02P6/28

Abstract: The control of the current in PWM mode through independently controlled windings of a multiphase motor driven in a "bipolar" mode is implemented by employing only two sense resistors and related control loops, regardless of the actual number of windings.

Abstract translation: 通过独立控制的以“双极”模式驱动的多相电动机的绕组来控制PWM模式中的电流通过仅使用两个检测电阻器和相关的控制回路来实现，而不管实际的绕组数量如何。