Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Reexamination Certificate
2006-05-16
2006-05-16
Vu, Bao Q. (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
C323S223000, C323S224000
Reexamination Certificate
active
07045992
ABSTRACT:
A synchronous switching voltage regulator circuit is provided. After the first PWM pulse or at the end of a soft-start, a gradual transition is made from asynchronous rectification to fully synchronous rectification. The gradual transition to synchronous rectification is made by gradually increasing the time that the synchronous switch is enabled to be on.
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Chiu Kwok-Fu
Culpepper Barry
Silva Faruk Jose Nome
Wurtz Michael J.
Darby & Darby PC
Gaffney Matthew M.
National Semiconductor Corporation
Vu Bao Q.
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