Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2004-10-27
2008-01-22
Riley, Shawn (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
C323S266000, C323S285000
Reexamination Certificate
active
07321223
ABSTRACT:
In a switching power supply apparatus, the change in the voltage VOUT at the OUT terminal is transmitted to a V-I conversion circuit via an error amplification circuit and to an I-V conversion circuit, whereby the output voltage signal VL of the I-V conversion circuit is changed. The peak value of the drain current of a switching device changes since VL is used as the reference voltage of an overcurrent detection circuit. VL is transmitted to an intermittent oscillation control circuit having a hysteresis characteristic, and the switching device is subjected to intermittent oscillation. In the switching power supply apparatus, further reduction in power consumption can be attained during standby, particularly in a no-load condition.
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Chinese Office Action dated Mar. 9, 2007 with English translation.
Matsushita Electric - Industrial Co., Ltd.
Riley Shawn
Stevens Davis Miller & Mosher LLP
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