Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2011-03-29
2011-03-29
Riley, Shawn (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
C323S233000, C323S293000, C323S290000, C323S259000
Reexamination Certificate
active
07915874
ABSTRACT:
Unlike buck converter and tapped-inductor buck converters, which use only inductive energy transfer, the present invention employs the capacitive energy transfer in addition to inductive energy transfer. The hybrid transformer performs the double duty simultaneously: transfers the input inductive energy storage to the load through a taped-inductor turns ratio n but also transfers the resonant capacitor discharge current to the load during OFF-time interval amplified by turns ratio m of the hybrid transformer.Despite the presence of the resonant inductor current during the OFF-time interval, the output voltage is neither dependent on resonant component values nor on the load current as in conventional resonant converters but depends on duty ratio D and turns ratio n of the hybrid transformer. Hence a simple regulation of output voltage is achieved using duty ratio control.
REFERENCES:
patent: 6486642 (2002-11-01), Qian
patent: 6525513 (2003-02-01), Zhao
patent: 7215101 (2007-05-01), Chang
Cuks, LLC
Riley Shawn
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