Patents by Inventor Leonardus De Groot

Leonardus De Groot 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).

  • Synchronous DC-DC regulator with shoot-through prevention
    Patent number: 6661208
    Abstract: A synchronous dc—dc converter converts an input dc voltage to an output dc voltage. A control FET (6) and a sync FET (8) are connected in series between input dc voltage terminals (2,4). An alternating control signal input from a control circuit (18) controls the control and sync FETs (6,8) to be switched on alternately. At least one driver (30, 32) is provided to drive the FETs (6,8). In response to a change in the alternating control signal of a predetermined polarity, the driver (32) switches off the sync FET (8), and then the driver (30) waits for the trigger signal before switching on the control FET (6).
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: December 9, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Philip Rutter, Leonardus De Groot, Nicolas J. Wheeler