Patents by Inventor Frank Fattori

Frank Fattori 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).

  • Controlled slew rate bus driver circuit having a high impedance state
    Patent number: 5959482
    Abstract: A driver amplifier for a bus feeds single polarity signals of controlled slew rate to the bus. The slew rate control is effected by a feedback capacitor connected from the output to the input of the amplifier. A clamp is provided for selectively connecting the input of the amplifier through a low impedance path to a point of reference voltage so that when the amplifier is quiescent signals on the bus cannot be fed through the capacitor to turn on the amplifier. A current source and a switchable current sink are connected to the input of the amplifier to change the capacitor to produce the slew rate controlled transitions. Another driver amplifier of the same design but using components of the opposite conductivity type can be used to apply signals of the opposite polarity to the same bus.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: September 28, 1999
    Assignee: Texas Instruments Incorporated
    Inventors: Frank Fattori, Marco Corsi, Derek Colman
  • High power MOS transistor
    Patent number: 5952869
    Abstract: A high power MOS transistor consists of a large number of sub-transistors (T1 to T6) connected in parallel. The gate electrodes of the sub-transistors (T1 to T6) can be driven individually via controllable switching elements (SW1 to SW6; SQ1 to SQ5).
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: September 14, 1999
    Assignee: Texas Instruments Incorporated
    Inventors: Frank Fattori, Walter Bucksch, Erich Bayer, Kevin Scoones
  • Differential bus drivers
    Patent number: 5767703
    Abstract: This invention relates to differential bus drivers for use in, for example, communication systems. The driver achieves highly symmetrical wave forms at the output stage for both high and low side drivers. In addition, the layout of components of the high and low side drivers is substantially identical which allows production of the driver as an integrated circuit with a simple layout.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: June 16, 1998
    Assignee: Texas Instruments Incorporated
    Inventors: Frank Fattori, Marco Corsi
  • Integrated circuit having bipolar transistors and field effect transistors respectively using potentials of opposite polarities relative to substrate
    Patent number: 5182469
    Abstract: An integrated circuit having a first group of semiconductor components which use potentials which are positive with respect to the substrate and a second group of components which use potentials which are negative with respect to the substrate. A negative voltage regulator circuit suitable for use in telephone circuits is described in which the regulated output is produced at the substrate so that noise can be prevented from being capacitatively coupled from the substrate to the input stages of amplifiers in the same integrated circuit. The exemplary circuit is produced by the so-called BIDFET process and use both bipolar and field effect transistors.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: January 26, 1993
    Assignee: Texas Instruments Incorporated
    Inventors: Joseph D. Farley, Frank Fattori