Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2011-06-14
2011-06-14
Riley, Shawn (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
C323S288000
Reexamination Certificate
active
07960949
ABSTRACT:
A power converter (1) comprises a voltage level increasing circuit (3) which receives a DC-input voltage (VIN) between first and second power converter inputs (IN1, IN2), and which has an output (O1; O2, O3) to supply an adapted input voltage having either a higher level than the input voltage (VIN) or a polarity opposite to the input voltage (VIN). A down-converter (2) has first and second down-converter inputs (IN3, IN4), a control switch (S1) with a main current path arranged between a first node (N1) and the first downconverter input (IN3), an inductor (L) arranged between the first node (N1) and a load (LO), and a sync switch (S2) arranged between the first node (N1) and the second down-converter input (IN4). A controller (4) controls the control switch (S1), and switches (S3, S4; S3, S4, S5, S6, S7, S8) of the voltage level increasing circuit (3) for either coupling the input voltage (VIN) or the adapted input voltage to the first node (N1) or to the first or second downconverter inputs (IN3, IN4).
REFERENCES:
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patent: 6452814 (2002-09-01), Wittenbreder
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International Search Report dated Jul. 31, 2007 in connection with PCT Application No. PCT/IB2005/053658.
Written Opinion of the International Searching Authority dated May 12, 2007 in connection with PCT Application No. PCT/IB2005/053658.
Riley Shawn
ST-Ericsson SA
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