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    CONTROL CIRCUIT OF ZERO-BIAS CURRENT LOW-SIDE DRIVER
    2.
    发明专利
    CONTROL CIRCUIT OF ZERO-BIAS CURRENT LOW-SIDE DRIVER 失效

    公开(公告)号：JPH0722851A

    公开(公告)日：1995-01-24

    申请号：JP9588194

    申请日：1994-04-09

    Applicant: ST MICROELECTRONICS SRL ,  CONS RIC MICROELETTRONICA

    Inventor： MILAZZO PATRIZIA ,  BONTEMPO GREGORIO ,  ALZATI ANGELO

    IPC: H03F1/02 ,  H02M1/08 ,  H03F3/21 ,  H03K17/00 ,  H03K17/0412 ,  H03K17/687

    Abstract: PURPOSE: To turn steady current consumption to zero without losing characteristics by providing a control circuit with a switch for blocking a current from a discharge current oscillator having control node capacitance when a power transistor(TR) is in an OFF state. CONSTITUTION: When a power TR PW is in an OFF state, the gate voltage of a TR M5 is also reduced. In the case of a switch OFF phase, the resistance of the TR M5 is increased and mismatch between currents I1, I2 is generated. The generation of a mis-matching trouble can be removed by determining the dimensions of the TR M5 so that large mismatch is generated when the power TR PW is slipped out of the saturation. Thereby the TR M5 operates as a switch to be opened when the gate voltage of the power TR PW is dropped less than the threshold voltage of the TR M5 and turns off a branch I2. Consequently the speed characteristics of the current oscillator I2 and the switch M5 can be held.

    CONTROL, REDUCTION AND EQUALIZATION OF DELAYS IN A LOW-SIDE DRIVER STAGE
    6.
    发明专利
    CONTROL, REDUCTION AND EQUALIZATION OF DELAYS IN A LOW-SIDE DRIVER STAGE 未知

    公开(公告)号：CA2120868A1

    公开(公告)日：1994-10-10

    申请号：CA2120868

    申请日：1994-04-08

    Applicant: ST MICROELECTRONICS SRL ,  CONS RIC MICROELETTRONICA

    Inventor： BONTEMPO GREGORIO ,  MILAZZO PATRIZIA ,  ALZATI ANGELO

    IPC: H03K17/04 ,  H03K17/0412 ,  H03K17/16 ,  H03K17/687

    Abstract: CONTROL, REDUCTION AND EQUALIZATION OF DELAYS IN A LOWSIDE DRIVER STAGE" The turn-off delay time of a low-side driver (output power transistor), may be independently reduced and eventually made identical to the turn-on delay time by employing an auxiliary current generator that may be controlled by the same switching signal that controls a current generator employed for discharging the control node of the low-side driver, in order to provide an augmented discharging current during a first phase of a turn-off process. The contribution to the capacitance discharge current provided by said third current generator is automatically interrupted by means responsive to the voltage present on the driving node of the low-side driver, when it approaches saturation.

    7.
    发明专利
    未知

    公开(公告)号：DE69319326T2

    公开(公告)日：1998-10-29

    申请号：DE69319326

    申请日：1993-04-09

    Applicant: ST MICROELECTRONICS SRL ,  CONS RIC MICROELETTRONICA

    Inventor： BONTEMPO GREGORIO ,  MILAZZO PATRIZIA ,  ALZATI ANGELO

    IPC: H03K17/04 ,  H03K17/0412 ,  H03K17/16 ,  H03K17/687

    Abstract: The turn-off delay time of a low-side driver (output power transistor), may be independently reduced and eventually made identical to the turn-on delay time by employing an auxiliary current generator that may be controlled by the same switching signal that controls a current generator employed for discharging the control node of the low-side driver, in order to provide an augmented discharging current during a first phase of a turn-off process. The contribution to the capacitance discharge current provided by said third current generator is automatically interrupted by means responsive to the voltage present on the driving node of the low-side driver, when it approaches saturation.

    9.
    发明专利
    未知

    公开(公告)号：DE69319326D1

    公开(公告)日：1998-07-30

    申请号：DE69319326

    申请日：1993-04-09

    Applicant: ST MICROELECTRONICS SRL ,  CONS RIC MICROELETTRONICA

    Inventor： BONTEMPO GREGORIO ,  MILAZZO PATRIZIA ,  ALZATI ANGELO

    IPC: H03K17/04 ,  H03K17/0412 ,  H03K17/16 ,  H03K17/687

    Abstract: The turn-off delay time of a low-side driver (output power transistor), may be independently reduced and eventually made identical to the turn-on delay time by employing an auxiliary current generator that may be controlled by the same switching signal that controls a current generator employed for discharging the control node of the low-side driver, in order to provide an augmented discharging current during a first phase of a turn-off process. The contribution to the capacitance discharge current provided by said third current generator is automatically interrupted by means responsive to the voltage present on the driving node of the low-side driver, when it approaches saturation.

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