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.

公开(公告)号：DE60029747D1

公开(公告)日：2006-09-14

申请号：DE60029747

申请日：2000-03-31

Applicant: ST MICROELECTRONICS SRL

Inventor： GENOVA ANGELO ,  PIDUTTI ALBINO ,  NOVELLI ALDO

IPC: H02P6/14 ,  H02P6/28

Abstract: The present invention relates to a current (I) control method for drive systems of multi-phase brushless motors, in particular at phase switching, wherein the motor coils (1,2,3) led to a common node (D) are driven by applying a respective drive voltage to the free end (A,B,C) of each coil (1,2,3) via corresponding power stages (4,5,6). The method comprises switching the current flow from one phase (1-2) to the next (1-3) in the direction of rotation of the motor at the phase switch, thereby forcing the unaffected one (2) of said coils by the phase switch into a state of high impedance. Advantageously, the decreasing rate of the current (I2) in the coil (2) unaffected by the phase switch can be twice as high as the decreasing rate of the current (I1) in the phase being switched from.

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.

公开(公告)号：DE69705217D1

公开(公告)日：2001-07-19

申请号：DE69705217

申请日：1997-08-07

Applicant: ST MICROELECTRONICS SRL

Inventor： GENOVA ANGELO ,  CANTONE GIUSEPPE ,  GARIBOLDI ROBERTO

IPC: H03K5/08 ,  G05F3/26 ,  H03K17/16 ,  G05F1/00 ,  G05F1/575