公开(公告)号：AU2003256840A1

公开(公告)日：2004-02-16

申请号：AU2003256840

申请日：2003-07-25

Applicant: INT RECTIFIER CORP

Inventor： TAM DAVID ,  TAKAHASHI TOSHIO ,  HO EDDY YING-YIN ,  LI YONG PERRY ,  HONDA JUN

IPC: H02M1/08 ,  H02M1/44 ,  H02M5/458 ,  H02P27/06 ,  H03K17/16 ,  H02M7/5387 ,  H02M7/12

Abstract: A motor drive system control provides global closed loop feedback to cooperatively operate system components to adaptively reduce noise and provide noise cancellation feedback. An active EMI filter reduces differential and common mode noise on an input and provides a noise level indication to a system controller. Power switches in both a power converter and power inverter are cooperatively controlled with dynamic dv/dt control to reduce switching noise according to a profile specified by the controller. The dv/dt control is provided as an analog signal to a high voltage IC and codified as a pulse width for a level shifting circuit supplying control signals to the high voltage gate drive. A noise extraction circuit and technique obtain fast noise sampling to permit noise cancellation and adaptive noise reduction.

公开(公告)号：GB2300533B

公开(公告)日：1999-11-10

申请号：GB9609473

申请日：1996-05-07

Applicant: INT RECTIFIER CORP

Inventor： CHOI CHONGWOOK CHRIS ,  TAM DAVID

IPC: H02M7/538 ,  H03K17/06 ,  H03K17/687

Abstract: A circuit for driving power transistors in a half bridge configuration from a control signal referenced to any potential between the line voltage for the power transistors and the line voltage return. The circuit includes an input circuit receiving a control signal referenced to any potential between the line voltage and the line voltage return, the input circuit being supplied with two voltage levels floating with respect to a common voltage level, a first level shifting circuit receiving an output of the input circuit which shifts the level of the output of the input circuit so that it is referenced to the common voltage level, a low side driver circuit for the power transistor in the half bridge configuration which functions as the low side power transistor, the low side driver circuit receiving the output referenced to the common voltage level, a second level shifting circuit which shifts the level of the output from the first level shifting circuit to produce a signal referenced to a second higher voltage level than said common level, and a driver circuit receiving the signal referenced to the second higher voltage level for driving the power transistor comprising the high side power transistor in the half bridge configuration. The circuit can be incorporated in an integrated circuit comprising a single chip, i.e., a silicon chip.

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

IPC: G01R19/25 ,  H02P20060101 ,  H02P7/00 ,  H02P23/00 ,  H03F3/387 ,  H03K7/08 ,  H03M1/60

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.

公开(公告)号：GB2300533A

公开(公告)日：1996-11-06

申请号：GB9609473

申请日：1996-05-07

Applicant: INT RECTIFIER CORP

Inventor： CHOI CHONGWOOK CHRIS ,  TAM DAVID

IPC: H02M7/538 ,  H03K17/06 ,  H03K17/687 ,  H03K17/00

Abstract: A circuit for driving power transistors in a half bridge configuration from a control signal referenced to any potential between the line voltage for the power transistors and the line voltage return. The circuit includes an input circuit receiving a control signal referenced to any potential between the line voltage and the line voltage return, the input circuit being supplied with two voltage levels floating with respect to a common voltage level, a first level shifting circuit receiving an output of the input circuit which shifts the level of the output of the input circuit so that it is referenced to the common voltage level, a low side driver circuit for the power transistor in the half bridge configuration which functions as the low side power transistor, the low side driver circuit receiving the output referenced to the common voltage level, a second level shifting circuit which shifts the level of the output from the first level shifting circuit to produce a signal referenced to a second higher voltage level than said common level, and a driver circuit receiving the signal referenced to the second higher voltage level for driving the power transistor comprising the high side power transistor in the half bridge configuration. The circuit can be incorporated in an integrated circuit comprising a single chip, i.e., a silicon chip.

公开(公告)号：ITMI911246A1

公开(公告)日：1992-11-08

申请号：ITMI911246

申请日：1991-05-08

Applicant: INT RECTIFIER CORP

Inventor： KINZER DANIEL M ,  TAM DAVID

IPC: H02M1/08 ,  G01R29/027 ,  H03K20060101 ,  H03K17/16 ,  H03K17/687 ,  H03K19/003

公开(公告)号：ITMI911246D0

公开(公告)日：1991-05-08

申请号：ITMI911246

申请日：1991-05-08

Applicant: INT RECTIFIER CORP

Inventor： KINZER DANIEL M ,  TAM DAVID

IPC: H02M1/08 ,  G01R29/027 ,  H03K17/16 ,  H03K17/687 ,  H03K19/003 ,  H03K