US Patent No: 8,207,722

Number of patents in Portfolio can not be more than 2000

DC/DC converter

ALSO PUBLISHED AS: 20100052627

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Abstract

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A boost DC/DC converter has a voltage dividing circuit connected between the output terminal and the ground, that outputs a divided voltage obtained by dividing the output voltage; a reference voltage generating circuit that generates a reference voltage based on the input voltage; an error amplifier that outputs a first signal corresponding to the difference between the divided voltage and the reference voltage; a feedforward circuit that detects the input voltage and outputs a second signal corresponding to a current inversely proportional to the input voltage; a multiplier that multiples the first signal by the second signal and outputs a third signal obtained; and a control circuit that outputs, based on the third signal, a control signal for controlling on/off of the switching transistor so that the divided voltage is equal to the reference voltage.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KABUSHIKI KAISHA TOSHIBATOKYO40080

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Otsuka, Masafumi Tokushima, JP 8 8
Tanifuji, Ryo - 5 9
Tokai, Yoichi Yokohama, JP 26 188

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DIALOG SEMICONDUCTOR, INC. (1)
2008/0122,422 Parallel Current Mode Control Using a Direct Duty Cycle Algorithm with Low Computational Requirements to Perform Power Factor Correction 9 2007
 
FAIRCHILD KOREA SEMICONDUCTOR LTD. (1)
5,949,229 Power factor correction circuit having an error signal multiplied by a current signal 44 1997
 
KABUSHIKI KAISHA TOSHIBA (1)
5,708,356 Apparatus for supplying stabilized power to a load having voltage-current characteristics exhibiting partial negative resistance 6 1996
 
LAMBDA AMERICAS, INC. (1)
2006/0043,942 Power converter apparatus and methods using output current feedforward control 5 2005

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