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Active energy recovery clamping circuit to improve the performance of power converters

United States Patent

9,647,563
May 9, 2017
View the Complete Patent at the US Patent & Trademark Office
A regenerative clamping circuit for a power converter using clamping diodes to transfer charge to a clamping capacitor and a regenerative converter to transfer charge out of the clamping capacitor back to the power supply input connection. The regenerative converter uses a switch connected to the midpoint of a series connected inductor and capacitor. The ends of the inductor and capacitor series are connected across the terminals of the power supply to be in parallel with the power supply.
Whitaker; Bret (Fayetteville, AR), Barkley; Adam (Springdale, AR)
Cree Fayetteville, Inc. (Fayetteville, AR)
14/ 634,252
February 27, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under grant DE-AR0000111 awarded by the United States Department of Energy (ARPA-E). The United States government has certain rights in the invention.