Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2007-03-20
2007-03-20
Han, Jessica (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
C323S259000, C323S290000, C363S020000
Reexamination Certificate
active
10744019
ABSTRACT:
An inductor in a series path of a DC converter having a buck or boost configuration is constituted by a transformer with windings in series with switches of the converter. A transformer turns ratio facilitates matching switch voltage and current stresses to characteristics of MOSFETs forming the switches. A high side MOSFET can have its source at a constant voltage to facilitate driving this switch. One switch can be replaced by a diode. A transformer leakage energy removal circuit can provide an auxiliary output voltage, greater than the input voltage for a buck configuration.
REFERENCES:
patent: 4031453 (1977-06-01), Teuling
patent: 5610804 (1997-03-01), Shimizu
patent: 6252383 (2001-06-01), Wittenbreder
Rudy Severns—International Rectifier Corp. “Switchmode and Resonant Converter Circuits”, Jun. 28, 1982.
Han Jessica
Potentia Semiconductor Corporation
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