Patents by Inventor Brendan P. Kelley

Brendan P. Kelley 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).

  • Temperature sensing circuit
    Patent number: 5563760
    Abstract: A temperature sensing circuit (100) for sensing the temperature of an active semiconductor device, for example, a power MOSFET (11) of a semiconductor body (10). The circuit has a first temperature sensing device (R1R2) provided on the semiconductor body at a first position (P.sub.1) adjacent a periphery (12) of the active semiconductor device (11), a second temperature sensing device (R3,R4) provided on the semiconductor body at a second position (P.sub.2) further from the periphery of the active semiconductor device than the first position. An arrangement, for example, a comparator responsive to the first and second temperature sensing devices provides a control signal to switch off the active semiconductor device (11) when the difference in the temperature sensed by the first and second sensing devices reaches a predetermined value.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: October 8, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Royce Lowis, Edward S. Eilley, Paul T. Moody, Aart G. Korteling, Brendan P. Kelley