CPES Receives US Patent: Quasi-Parallel Voltage Regulator

Quasi-Parallel Voltage Regulator
by Ming Xu, Julu Sun, Ya Liu, Fred C. Lee
U.S. Patent: 7,872,886 
Issued: January 18, 2011

Patent Abstract:  Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected in series wherein regulated and unregulated branches each provide a substantially fixed and constant proportion of the output current. The series connection of input power sources may provide a further feedback mechanism in addition to feedback for regulation which enhances overall performance. As a perfecting feature of the invention, inductor-less resonant converters which are switched in an interleaved fashion may be used in the unregulated branch while substantially cancelling the characteristic large output voltage ripple thereof.

This patent application has been sponsored by CPES IPPF (Intellectual Property Protection Fund) - a unique IP access mechanism that provides extraordinary IP advantage to CPES Principal Plus and Principal Members.

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