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45 records (took 0.032 seconds)

    32.
    发明专利
    未知

    公开(公告)号：DE60028030T2

    公开(公告)日：2006-12-14

    申请号：DE60028030

    申请日：2000-08-22

    Applicant: ST MICROELECTRONICS SRL ,  TECDIS S P A

    Inventor： GARIBOLDI ROBERTO ,  LAVORERIO RICCARDO ,  SALA LEONARDO ,  NIDASIO GIOVANNI

    IPC: H02M3/07 ,  G05F1/563

    Abstract: This invention relates to a high-efficiency electronic circuit (1) for generating and regulating a supply voltage (Vout), comprising a charge-pump voltage multiplier (2) which is associated with an oscillator (3) and has an output connected to a voltage regulator (4) in order to ultimately output said supply voltage (Vout). Advantageously, the circuit comprises a first hysteresis comparator (5) having as inputs the regulator (4) output and the multiplier (2) output, and comprises a second hysteresis comparator (6) having as inputs a reference potential (Vrif) and a partition (K) of the voltage (Vout) presented on the regulator (4) output. The comparators are structurally and functionally independent of each other, and their outputs are coupled to the oscillator (3) through a logic circuit (7) to modulate the oscillator (3) operation.

    33.
    发明专利
    未知

    公开(公告)号：DE60028030D1

    公开(公告)日：2006-06-22

    申请号：DE60028030

    申请日：2000-08-22

    Applicant: ST MICROELECTRONICS SRL ,  TECDIS S P A

    Inventor： GARIBOLDI ROBERTO ,  LAVORERIO RICCARDO ,  SALA LEONARDO ,  NIDASIO GIOVANNI

    IPC: H02M3/07 ,  G05F1/563

    Abstract: This invention relates to a high-efficiency electronic circuit (1) for generating and regulating a supply voltage (Vout), comprising a charge-pump voltage multiplier (2) which is associated with an oscillator (3) and has an output connected to a voltage regulator (4) in order to ultimately output said supply voltage (Vout). Advantageously, the circuit comprises a first hysteresis comparator (5) having as inputs the regulator (4) output and the multiplier (2) output, and comprises a second hysteresis comparator (6) having as inputs a reference potential (Vrif) and a partition (K) of the voltage (Vout) presented on the regulator (4) output. The comparators are structurally and functionally independent of each other, and their outputs are coupled to the oscillator (3) through a logic circuit (7) to modulate the oscillator (3) operation.

    34.
    发明专利
    未知

    公开(公告)号：ITVA20000031A1

    公开(公告)日：2002-03-07

    申请号：ITVA20000031

    申请日：2000-09-07

    Applicant: ST MICROELECTRONICS SRL

    Inventor： GENOVA ANGELO ,  GARIBOLDI ROBERTO ,  NOVELLI ALDO ,  RICOTTI GIULIO

    IPC: G01R19/165

    Abstract: The device and method monitor the current delivered to a load through a power transistor including a sense transistor. The circuit includes a disturbances attenuating circuit that has a differential stage, and first, second and third stages referenced to ground, the respective input nodes of which are connected in common to an output node of the differential stage. The third stage is formed by a transistor identical to a transistor of the first stage and delivers a current signal through a current terminal thereof, proportional to the current being delivered to the load.

    39.
    发明专利
    未知

    公开(公告)号：ITMI992469A1

    公开(公告)日：2001-05-25

    申请号：ITMI992469

    申请日：1999-11-25

    Applicant: ST MICROELECTRONICS SRL

    Inventor： NOVELLI ALDO ,  GARIBOLDI ROBERTO ,  GENOVA ANGELO ,  FILIPPO ROBERTO

    IPC: H03K17/0412 ,  H03K17/06

    Abstract: A high side circuit is described which comprises at least one power device (1) having a first non drivable terminal (D) connected to a supply voltage (Vcc), at least one load (2) connected between a second non drivable terminal (S) of the power device (1) and ground, and driving circuitry (10). The driving circuitry (10) comprises suitable dimensioned transistors (M1, M2, M3) which are connected to each other and to a higher voltage (Vboot) than the supply voltage (Vcc) in order to control the turning on and the turning off of the power device (1) and to minimize the potential difference between the second non drivable terminal (S) and a drivable terminal (G) of the power device (1) during the turning off state to avoid the re-turning on of the same power device.

    40.
    发明专利
    未知

    公开(公告)号：ITMI992469D0

    公开(公告)日：1999-11-25

    申请号：ITMI992469

    申请日：1999-11-25

    Applicant: ST MICROELECTRONICS SRL

    Inventor： NOVELLI ALDO ,  GARIBOLDI ROBERTO ,  GENOVA ANGELO ,  FILIPPO ROBERTO

    IPC: H03K17/0412 ,  H03K17/06

    Abstract: A high side circuit is described which comprises at least one power device (1) having a first non drivable terminal (D) connected to a supply voltage (Vcc), at least one load (2) connected between a second non drivable terminal (S) of the power device (1) and ground, and driving circuitry (10). The driving circuitry (10) comprises suitable dimensioned transistors (M1, M2, M3) which are connected to each other and to a higher voltage (Vboot) than the supply voltage (Vcc) in order to control the turning on and the turning off of the power device (1) and to minimize the potential difference between the second non drivable terminal (S) and a drivable terminal (G) of the power device (1) during the turning off state to avoid the re-turning on of the same power device.

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