Patents by Inventor Angelo Crespi

Angelo Crespi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic bridge and half-bridge circuits with suppression of high-voltage transients on the power supply line
    Patent number: 6160694
    Abstract: An electronic circuit with suppression of high-voltage transients on the power supply line includes first and second power transistors series-connected between first and second power supplies, and first and second driving circuits for respective first and second power transistors. The first driving circuit includes a first diode and a first Zener diode, and the second driving circuit includes a second diode and a second Zener diode. Anodes of the first diode and the first Zener diode are connected to the cathode of the second Zener diode. A cathode of the first Zener diode is connected to the first power supply. A cathode of the first diode is connected to a gate of the first power transistor. Anodes of the second diode and the second Zener diode are connected together. A cathode of the second diode is connected to a gate of the second power transistor.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: December 12, 2000
    Assignee: STMicroelectronics S.r.l.
    Inventors: Angelo Crespi, Vanni Poletto
  • Circuit for diagnosing the state of an electrical load
    Patent number: 5886510
    Abstract: A circuit for diagnosing the state of a load connected to a driver includes a DMOS transistor interposed between a terminal of the load and voltage comparator circuits. The DMOS transistor limits the maximum voltage input to the comparators to thereby reduce the circuit area occupied by the comparators and consequently to reduce the cost of the diagnosis circuit.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: March 23, 1999
    Assignees: Magneti Marelli S.p.A., SGS-Thomson Microelectronics S.r.l.
    Inventors: Angelo Crespi, Stefania Chicca, Paolo Mastella, Vanni Poletto