公开(公告)号：DE68914948D1

公开(公告)日：1994-06-01

申请号：DE68914948

申请日：1989-11-14

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  MORELLI MARCO ,  MAGGIONI GIAMPIETRO ,  MENEGOLI PAOLO

IPC: H01L27/04 ,  G05F3/30 ,  H01L21/822

Abstract: This voltage reference circuit has high thermal stability and minimal bulk and comprises a transistor (Q2) defining a base-emitter junction having a voltage drop (VBE) which varies in a non-linear manner as a function of temperature and resistors (R2a-R2c) connected in series to the junction, the junction and the resistors being interposed between a ground line and the output terminal. A compensation transistor (QR) generates a compensation current which varies as a function of temperature so as to produce a voltage drop with a behavior substantially opposite to the previous voltage drop upon reaching the switching on temperature of the transistor.

公开(公告)号：ITMI910720A1

公开(公告)日：1992-09-19

申请号：ITMI910720

申请日：1991-03-18

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  POLETTO VANNI

IPC: G05F3/26 ,  G01R1/28 ,  G05F3/30 ,  H02J20060101

公开(公告)号：IT9022470D0

公开(公告)日：1990-12-21

申请号：IT2247090

申请日：1990-12-21

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： POLETTO VANNI ,  BRAMBILLA MASSIMILIANO

IPC: G05F3/26 ,  G05F1/46 ,  G05F3/30 ,  H02J

Abstract: The generator comprises a first generator of voltage with thermal drift of zero, a second generator of voltage with given thermal drift, first means for applying a given load to the voltage generated by the first generator, second means for applying a given load to the voltage generated by the second generator, subtracting means for subtracting one from the other the loaded voltages generated by said first and second generator of voltage.

公开(公告)号：IT8822710D0

公开(公告)日：1988-11-23

申请号：IT2271088

申请日：1988-11-23

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  MORELLI MARCO ,  MAGGIONI GIAMPIETRO ,  MENEGOLI PAOLO

IPC: H01L27/04 ,  G05F3/30 ,  H01L21/822

Abstract: This voltage reference circuit has high thermal stability and minimal bulk and comprises a transistor (Q2) defining a base-emitter junction having a voltage drop (VBE) which varies in a non-linear manner as a function of temperature and resistors (R2a-R2c) connected in series to the junction, the junction and the resistors being interposed between a ground line and the output terminal. A compensation transistor (QR) generates a compensation current which varies as a function of temperature so as to produce a voltage drop with a behavior substantially opposite to the previous voltage drop upon reaching the switching on temperature of the transistor.

公开(公告)号：DE69216882T2

公开(公告)日：1997-06-05

申请号：DE69216882

申请日：1992-03-11

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  POLETTO VANNI

IPC: G05F3/26 ,  G01R1/28 ,  G05F3/30 ,  G05F1/46 ,  G05F1/567

Abstract: The generator of reference voltage comprises a first generator of current (1) suitable for generating a first current (I) that varies linearly with the supply voltage, a first generator of voltage (T10, T11, R4, R6, T6, T7, I3, T12) suitable for generating a constant first voltage (VBG) with zero thermal drift, a second generator of current (T10, T11, R4, R6, T6, T7, I3, T13, T14, T15, R5) suitable for generating a second current (I1) dependent on said voltage (VBG) with zero thermal drift, a second generator of voltage (T6, T7, T10, T11) suitable for generating a second voltage (DVBE) with given thermal drift, a third generator of current (T6, T7, T10, T11, T4, T5, T8, T9) suitable for generating a third current (I2) dependent on said voltage (DVBE) with given thermal drift and means (5) for combining said currents (I, I1, I2) together so as to produce across an output resistance (R7) an output voltage (Vout) having a value equal to the product of said output resistance (R7) by said first and third current (I, I2), divided by said second current (I1).

公开(公告)号：DE68914948T2

公开(公告)日：1995-03-02

申请号：DE68914948

申请日：1989-11-14

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  MORELLI MARCO ,  MAGGIONI GIAMPIETRO ,  MENEGOLI PAOLO

IPC: H01L27/04 ,  G05F3/30 ,  H01L21/822

Abstract: This voltage reference circuit has high thermal stability and minimal bulk and comprises a transistor (Q2) defining a base-emitter junction having a voltage drop (VBE) which varies in a non-linear manner as a function of temperature and resistors (R2a-R2c) connected in series to the junction, the junction and the resistors being interposed between a ground line and the output terminal. A compensation transistor (QR) generates a compensation current which varies as a function of temperature so as to produce a voltage drop with a behavior substantially opposite to the previous voltage drop upon reaching the switching on temperature of the transistor.

公开(公告)号：FR2670915B1

公开(公告)日：1994-12-09

申请号：FR9116274

申请日：1991-12-20

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： POLETTO VANNI ,  BRAMBILLA MASSIMILIANO

IPC: G05F3/26 ,  G05F1/46 ,  G05F3/30 ,  G05F3/16

Abstract: The generator comprises a first generator of voltage with thermal drift of zero, a second generator of voltage with given thermal drift, first means for applying a given load to the voltage generated by the first generator, second means for applying a given load to the voltage generated by the second generator, subtracting means for subtracting one from the other the loaded voltages generated by said first and second generator of voltage.

公开(公告)号：IT1245237B

公开(公告)日：1994-09-13

申请号：ITMI910720

申请日：1991-03-18

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  POLETTO VANNI

IPC: G05F3/26 ,  G01R1/28 ,  G05F3/30 ,  H02J

Abstract: The generator of reference voltage comprises a first generator of current (1) suitable for generating a first current (I) that varies linearly with the supply voltage, a first generator of voltage (T10, T11, R4, R6, T6, T7, I3, T12) suitable for generating a constant first voltage (VBG) with zero thermal drift, a second generator of current (T10, T11, R4, R6, T6, T7, I3, T13, T14, T15, R5) suitable for generating a second current (I1) dependent on said voltage (VBG) with zero thermal drift, a second generator of voltage (T6, T7, T10, T11) suitable for generating a second voltage (DVBE) with given thermal drift, a third generator of current (T6, T7, T10, T11, T4, T5, T8, T9) suitable for generating a third current (I2) dependent on said voltage (DVBE) with given thermal drift and means (5) for combining said currents (I, I1, I2) together so as to produce across an output resistance (R7) an output voltage (Vout) having a value equal to the product of said output resistance (R7) by said first and third current (I, I2), divided by said second current (I1).

公开(公告)号：DE69212364T2

公开(公告)日：1996-11-28

申请号：DE69212364

申请日：1992-04-02

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  MAGGIONI GIAMPIETRO

IPC: G01R31/02 ,  H01H47/32 ,  H02H3/08 ,  H02H9/04 ,  H02H7/20 ,  F02D41/30

Abstract: A circuit for detecting short-circuiting between the supply line (VCC) and output (T) of a drive device (1) comprising a switch (2) defining the output terminal (T) of the device to which is connected an inductive load (L), the other terminal of which is connected to the supply line (VCC); two current recirculating branches (18, 20; 26) connectable parallel to the load (L); and a control unit for opening and closing the switch (2) so that the load (L) is supplied with current rising to a first predetermined value in a first increasing phase, falling to a second predetermined value in a first recirculating phase, then oscillating about a hold value in subsequent increasing and recirculating phases. The detecting circuit comprises two current sensors (60, 61) each designed to detect the current flowing in a respective recirculating branch (18, 20; 26) in the first recirculating phase and in subsequent recirculating phases respectively. The current sensors (60, 61) are connected to a fault signaling circuit (73-85) for producing a fault signal in the absence of current in the recirculating branches during the recirculating phases.

公开(公告)号：DE69212364D1

公开(公告)日：1996-08-29

申请号：DE69212364

申请日：1992-04-02

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  MAGGIONI GIAMPIETRO

IPC: G01R31/02 ,  H01H47/32 ,  H02H3/08 ,  H02H9/04 ,  H02H7/20 ,  F02D41/30

Abstract: A circuit for detecting short-circuiting between the supply line (VCC) and output (T) of a drive device (1) comprising a switch (2) defining the output terminal (T) of the device to which is connected an inductive load (L), the other terminal of which is connected to the supply line (VCC); two current recirculating branches (18, 20; 26) connectable parallel to the load (L); and a control unit for opening and closing the switch (2) so that the load (L) is supplied with current rising to a first predetermined value in a first increasing phase, falling to a second predetermined value in a first recirculating phase, then oscillating about a hold value in subsequent increasing and recirculating phases. The detecting circuit comprises two current sensors (60, 61) each designed to detect the current flowing in a respective recirculating branch (18, 20; 26) in the first recirculating phase and in subsequent recirculating phases respectively. The current sensors (60, 61) are connected to a fault signaling circuit (73-85) for producing a fault signal in the absence of current in the recirculating branches during the recirculating phases.