公开(公告)号：ITMI20050775A1

公开(公告)日：2006-10-30

申请号：ITMI20050775

申请日：2005-04-29

Applicant: ST MICROELECTRONICS SRL

Inventor： GIUSSANI LUCA ,  MARANO VINCENZO ,  NOVELLI ALDO

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.

公开(公告)号：DE69425368T2

公开(公告)日：2000-12-07

申请号：DE69425368

申请日：1994-04-15

Applicant: ST MICROELECTRONICS SRL

Inventor： MENNITI PIETRO ,  NOVELLI ALDO

IPC: H03K19/0185 ,  H03K19/0175 ,  G01R15/04

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：DE69530288D1

公开(公告)日：2003-05-15

申请号：DE69530288

申请日：1995-05-31

Applicant: ST MICROELECTRONICS SRL ,  CONS RIC MICROELETTRONICA

Inventor： CANTONE GIUSEPPE ,  NOVELLI ALDO

IPC: H03K5/1532 ,  H03K5/1252 ,  H03K5/01 ,  H03K5/153

Abstract: The present invention relates primarily to a pulse generator (GEN) having an input (ID) and two outputs (OR,OS) at which to generate respectively a pulse in relation to a edge of a different type at input. The generator provides two distinct logic circuit blocks of the sequential type hence mutually independent for generation of the pulses at the two outputs. In this manner it is possible to easily control the characteristics of the pulses. In addition, if two blocks are connected with appropriate and simple logic networks (G3,G4) it is possible in the generation phase to impose conditions between the pulses at the two outputs in a simple manner and with a certain freedom.

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.