公开(公告)号：ITMI992374A1

公开(公告)日：2001-05-15

申请号：ITMI992374

申请日：1999-11-15

Applicant: ST MICROELECTRONICS SRL

Inventor： MILANESI ANDREA ,  POLETTO VANNI ,  GHIGINI PAOLO

IPC: G05D23/24

Abstract: A temperature control system and method for integrated circuits, particularly those having a plurality of channels or power devices. The temperature control system for an integrated circuit includes at least a heat generating device; a sensor element providing a signal correlated to the working conditions of said the heat generating device such as a signal proportional to the dissipated power of the heat generating device; an elaboration circuit of the signal correlated to the working conditions of the heat generating device; and a turning off circuit of said at least a heat generating device responsively to a signal of said elaboration circuit.

公开(公告)号：DE69828869D1

公开(公告)日：2005-03-10

申请号：DE69828869

申请日：1998-05-22

Applicant: ST MICROELECTRONICS SRL

Inventor： MILANESI ANDREA ,  POLETTO VANNI

IPC: H03F3/45

公开(公告)号：ES2191407T3

公开(公告)日：2003-09-01

申请号：ES99830294

申请日：1999-05-13

Applicant: ST MICROELECTRONICS SRL ,  MAGNETI MARELLI POWERTRAIN SPA

Inventor： MILANESI ANDREA ,  CHICCA STEFANIA ,  POLETTO VANNI ,  GIORGETTA VALERIO ,  SGATTI STEFANO ,  VIGNA SERGIO

IPC: G01R31/02

Abstract: A system is described for the diagnosis of a driver (D) of the type adapted to detect one or more circuit anomalies which can occur in the said driver, including: voltage comparator circuits (10, 20) adapted to generate diagnostic logic signals (F1, F2, F3) each indicative of the existence of a corresponding type of anomaly; and a coding circuit (M, SM) adapted to receive these diagnostic signals (F1, F2, F3) and to output information relating to an overall operating state of the circuit. The coding circuit (M, SM) includes a first portion adapted to provide at its output first logic signals (SHB, SHG, OL) indicative of the last anomaly occurred since a system reset operation, and a second portion for coding such first logic signals (SHB, SHG, OL). The second portion includes a sequential logic network (SM) adapted to: receive the first logic input signals (SHB, SHG, OL) and at least one second logic signal (IN) indicative of the current operating phase of the driver (D); and achieve, as a function of the said first and second logic signals (SHB, SHG, OL; IN) a stable internal state such as to determine at the output information in the form of an N bit coded word representative of an occurred anomaly, of a condition of absence of anomaly in the current operating phase, or of a condition of absence of anomaly in any operating phase.

公开(公告)号：DE69905238D1

公开(公告)日：2003-03-13

申请号：DE69905238

申请日：1999-05-13

Applicant: ST MICROELECTRONICS SRL ,  MAGNETI MARELLI POWERTRAIN SPA

Inventor： MILANESI ANDREA ,  CHICCA STEFANIA ,  POLETTO VANNI ,  GIORGETTA VALERIO ,  SGATTI STEFANO ,  VIGNA SERGIO

IPC: G01R31/02

Abstract: A system is described for the diagnosis of a driver (D) of the type adapted to detect one or more circuit anomalies which can occur in the said driver, including: voltage comparator circuits (10, 20) adapted to generate diagnostic logic signals (F1, F2, F3) each indicative of the existence of a corresponding type of anomaly; and a coding circuit (M, SM) adapted to receive these diagnostic signals (F1, F2, F3) and to output information relating to an overall operating state of the circuit. The coding circuit (M, SM) includes a first portion adapted to provide at its output first logic signals (SHB, SHG, OL) indicative of the last anomaly occurred since a system reset operation, and a second portion for coding such first logic signals (SHB, SHG, OL). The second portion includes a sequential logic network (SM) adapted to: receive the first logic input signals (SHB, SHG, OL) and at least one second logic signal (IN) indicative of the current operating phase of the driver (D); and achieve, as a function of the said first and second logic signals (SHB, SHG, OL; IN) a stable internal state such as to determine at the output information in the form of an N bit coded word representative of an occurred anomaly, of a condition of absence of anomaly in the current operating phase, or of a condition of absence of anomaly in any operating phase.

公开(公告)号：ITMI992374D0

公开(公告)日：1999-11-15

申请号：ITMI992374

申请日：1999-11-15

Applicant: ST MICROELECTRONICS SRL

Inventor： MILANESI ANDREA ,  POLETTO VANNI ,  GHIGINI PAOLO

IPC: G05D23/24

Abstract: A temperature control system and method for integrated circuits, particularly those having a plurality of channels or power devices. The temperature control system for an integrated circuit includes at least a heat generating device; a sensor element providing a signal correlated to the working conditions of said the heat generating device such as a signal proportional to the dissipated power of the heat generating device; an elaboration circuit of the signal correlated to the working conditions of the heat generating device; and a turning off circuit of said at least a heat generating device responsively to a signal of said elaboration circuit.

公开(公告)号：ITMI992249D0

公开(公告)日：1999-10-28

申请号：ITMI992249

申请日：1999-10-28

Applicant: ST MICROELECTRONICS SRL

Inventor： MILANESI ANDREA

IPC: H03K5/22 ,  H03L20060101

Abstract: Non linear circuit for open load control in Low-Side Driver type circuits, including at least two power transistors, scaled according to an area ratio 1 to M, with M>1, wherein the power transistor having the smaller area is controlled by a circuit input signal while the transistor having the larger area is controlled by an output value of an AND type logic gate, managed by a control circuit, that is regulated by the output value of a voltage sensor, placed in parallel with the power transistor having the larger area, and by the output value of a current sensor, placed in series with the power transistor having the smaller area, so that, when a current flowing in the power transistor having the smaller area is less than a predetermined value of the threshold current, the control circuit signals the open load on an output pin.