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Ripple gate drive circuit for fast operation of series connected IGBTs

United States Patent

September 20, 2005
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A ripple gate drive circuit includes a plurality of transistors having their power terminals connected in series across an electrical potential. A plurality of control circuits, each associated with one of the transistors, is provided. Each control circuit is responsive to a control signal and an optical signal received from at least one other control circuit for controlling the conduction of electrical current through the power terminals of the associated transistor. The control circuits are responsive to a first state of the control circuit for causing each transistor in series to turn on sequentially and responsive to a second state of the control signal for causing each transistor in series to turn off sequentially.
Rockot; Joseph H. (North Huntington, PA), Murray; Thomas W. (Holtsville, NY), Bass; Kevin C. (Irwin, PA)
The United States of America as represented by the United States Department of Energy (Washington, DC)
10/ 440,225
May 19, 2003
GOVERNMENT INTERESTS This invention was made with government support under a contract awarded by the United States Department of Energy. The government has certain rights in this invention.