Electric power conversion systems – Current conversion – Including automatic or integral protection means
Reexamination Certificate
2011-07-05
2011-07-05
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Including automatic or integral protection means
Reexamination Certificate
active
07974111
ABSTRACT:
It is an object to provide a DC/DC converter that can stabilize power supply potential in use. It is another object to provide a semiconductor device in which circuit operation is stabilized. In addition to a power supply that supplies potential to be reference potential of boosting in a DC/DC converter, a power supply for charging a capacitor in the DC/DC converter is provided. Accordingly, loads to the power supply that supplies the reference potential of boosting can be reduced. Further, as power for charging the capacitor in the DC/DC converter, power supplied from not an antenna but a secondary battery is used. More specifically, a secondary battery is used as a power supply that supplies power to a buffer circuit or an inverter circuit. Thus, power supplied from the antenna can be stabilized. In other words, operation of a logic circuit and an analog circuit can be stabilized.
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Berhane Adolf
Fish & Richardson P.C.
Mehari Yemane
Semiconductor Energy Laboratory Co,. Ltd.
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