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公开(公告)号：GB2336961B
公开(公告)日：2003-04-16
申请号：GB9905801
申请日：1999-03-12
Applicant: INT RECTIFIER CORP
Inventor： TAKAHASHI TOSHIO , TAM DAVID , CHEY CHRISTOPHER , DUBHASHI AJIT , PARRY JOHN , TCHAMDSOU ARISTIDE
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公开(公告)号：GB2320762B
公开(公告)日：2001-06-27
申请号：GB9723677
申请日：1997-11-07
Applicant: INT RECTIFIER CORP
Inventor： DUBHASHI AJIT , CLEMENTE STEFANO , CHEY CHRISTOPHER
Abstract: A current sensing circuit including a shunt resistor coupled, at one end, to the low-side transistor of a half bridge circuit and, at its other end, to a load. The voltage sensed across the shunt resistor is proportional to the current delivered to the load. A level shifting circuit is provided to transpose the sensed voltage to a low voltage signal which can be fed back to control commutation of the transistors in the half bridge circuit.
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公开(公告)号：GB2336961A
公开(公告)日：1999-11-03
申请号：GB9905801
申请日：1999-03-12
Applicant: INT RECTIFIER CORP
Inventor： TAKAHASHI TOSHIO , TAM DAVID , CHEY CHRISTOPHER , DUBHASHI AJIT , PARRY JOHN , TCHAMDSOU ARISTIDE
Abstract: A circuit for recovering a signal of interest which is offset by a common mode displacement, such as is the case when the signal is the voltage across a current sense resistor located on the high side bus or between the switches of a motor controller circuit. The circuit of the present invention converts the voltage across the resistor into a pulse code modulated data, then downshifts the voltage, and then recovers the signal of interest at the lower voltage by demodulating the signal. The recovered signal is then processed, either with a synchronized sample and hold circuit to provide an analog output, or with a counter and latch to provide a digital output.
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公开(公告)号：FR2755766B1
公开(公告)日：2000-04-07
申请号：FR9714028
申请日：1997-11-07
Applicant: INT RECTIFIER CORP
Inventor： DUBHASHI AJIT , CLEMENTE STEFANO , CHEY CHRISTOPHER
Abstract: A current sensing circuit including a shunt resistor coupled, at one end, to the low-side transistor of a half bridge circuit and, at its other end, to a load. The voltage sensed across the shunt resistor is proportional to the current delivered to the load. A level shifting circuit is provided to transpose the sensed voltage to a low voltage signal which can be fed back to control commutation of the transistors in the half bridge circuit.
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Patent Agency Ranking
公开(公告)号：SG60147A1
公开(公告)日：1999-02-22
申请号：SG1997003990
申请日：1997-11-07
Applicant: INT RECTIFIER CORP
Inventor： DUBHASHI AJIT , CLEMENTE STEFANO , CHEY CHRISTOPHER
IPC: G01R19/00 , H02P6/00 , H02P6/18 , G01R19/15 , G01R19/155 , G01R19/165
Abstract: A current sensing circuit including a shunt resistor coupled, at one end, to the low-side transistor of a half bridge circuit and, at its other end, to a load. The voltage sensed across the shunt resistor is proportional to the current delivered to the load. A level shifting circuit is provided to transpose the sensed voltage to a low voltage signal which can be fed back to control commutation of the transistors in the half bridge circuit.
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公开(公告)号：FR2755766A1
公开(公告)日：1998-05-15
申请号：FR9714028
申请日：1997-11-07
Applicant: INT RECTIFIER CORP
Inventor： DUBHASHI AJIT , CLEMENTE STEFANO , CHEY CHRISTOPHER
Abstract: A current sensing circuit including a shunt resistor coupled, at one end, to the low-side transistor of a half bridge circuit and, at its other end, to a load. The voltage sensed across the shunt resistor is proportional to the current delivered to the load. A level shifting circuit is provided to transpose the sensed voltage to a low voltage signal which can be fed back to control commutation of the transistors in the half bridge circuit.
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公开(公告)号：IT1296074B1
公开(公告)日：1999-06-09
申请号：ITMI972487
申请日：1997-11-07
Applicant: INT RECTIFIER CORP
Inventor： DUBHASHI AJIT , CLEMENTE STEFANO , CHEY CHRISTOPHER
Abstract: A current sensing circuit including a shunt resistor coupled, at one end, to the low-side transistor of a half bridge circuit and, at its other end, to a load. The voltage sensed across the shunt resistor is proportional to the current delivered to the load. A level shifting circuit is provided to transpose the sensed voltage to a low voltage signal which can be fed back to control commutation of the transistors in the half bridge circuit.
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公开(公告)号：ITMI972487A1
公开(公告)日：1999-05-07
申请号：ITMI972487
申请日：1997-11-07
Applicant: INT RECTIFIER CORP
Inventor： CHEY CHRISTOPHER , CLEMENTE STEFANO , DUBHASHI AJIT
IPC: H02P6/18 , G01R20060101 , G01R19/00 , H02P6/00
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公开(公告)号：GB2320762A
公开(公告)日：1998-07-01
申请号：GB9723677
申请日：1997-11-07
Applicant: INT RECTIFIER CORP
Inventor： DUBHASHI AJIT , CLEMENTE STEFANO , CHEY CHRISTOPHER
Abstract: A current sensing circuit comprises a resistor RShunt suitable for coupling to a load supply arrangement such that the voltage across the resistor is proportional to the current delivered to the said load. The voltage signal across the resistor is processed via circuitry for adjusting the voltage signal relative to a reference signal such that the resulting voltage signal may be used as a feedback signal to control the commutation of a converter device. The current sensing resistor Rshunt may be located in the converter device with one end connected to a junction between a high-side switching device and a low-side switching device of a half bridge arrangement and the other end being connected to the load. Analog or digital circuitry arrangements may be employed for processing the voltage signal.
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