Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2011-06-21
2011-06-21
Berhane, Adolf (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S282000
Reexamination Certificate
active
07965070
ABSTRACT:
A current-mode switching power supply is provided, in which there is no unstable operation arising from the fact that signals to generate PWM signals are minute, even when a load is light and a switching frequency is high. In a switching power supply of this invention, an added slope signal is superposed in an early stage of a rise of a current detection signal, so that a combined signal Vsig is caused to reach a certain magnitude even when the load is light and the switching frequency is high, and consequently an output FB of an error amplifier ERRAMP which is balanced with the combined signal is also increased. By this means, even in a current mode, it is possible to eliminate unstable operation arising from the fact that the feedback signal FB which is the output of the error amplifier ERRAMP and the combined signal Vsig are minute.
REFERENCES:
patent: 5903447 (1999-05-01), Takahashi et al.
patent: 6750637 (2004-06-01), Nagaki et al.
patent: 7479773 (2009-01-01), Michishita
patent: 2007/0120548 (2007-05-01), Kojima et al.
patent: 2007/0252567 (2007-11-01), Dearn et al.
patent: 2007/0285073 (2007-12-01), Nishida
patent: 2008/0061755 (2008-03-01), Michishita
patent: 2008/0074089 (2008-03-01), Yu et al.
patent: 2009/0201000 (2009-08-01), Kojima et al.
patent: 11-041924 (1999-02-01), None
patent: 2004-040856 (2004-02-01), None
patent: 2006-246626 (2006-09-01), None
Berhane Adolf
Finch, III Fred E
Fuji Electric Systems Co., Ltd.
Rabin & Berdo P.C.
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