US Patent No: 7,719,137

Number of patents in Portfolio can not be more than 2000

DC-DC switching converter device

ALSO PUBLISHED AS: 20060197384

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Abstract

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A DC-DC switching converter device (101), in particular a quarter-brick or eighth-brick device having an industry standard pin out, comprises a pulse-width modulation circuit (132) for driving a power converting switch, a trim connector (109) for adjusting an output voltage of the device, where the device (101) is designed such that the pulse-width modulation circuit (132) is synchronizable to an external oscillator by an external synchronization signal applied to the trim connector. A DC-DC converting circuit comprises a plurality of DC-DC switching converters (101) featuring trim connectors (109) for adjusting output voltages of the converters (101), whereby the converters (101) are connected such that they share a common input bus. It further features a system EMI (electromagnetic interference) filter common to all the DC-DC switching converters (101) and an external oscillator delivering an external synchronization signal to the plurality of DC-DC switching converters (101). The external oscillator is designed such that a frequency of the external synchronization signal is higher than a free running frequency of each of the plurality of DC-DC switching converters (101). The external oscillator is connected to the trim connectors (109) of the DC-DC switching converters (101).

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DET INTERNATIONAL HOLDING LIMITEDGEORGE TOWN GRAND CAYMAN40

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bucheru, Bogdan T Tucson, AZ 4 8
Davila,, Jr Marco A - 1 1
Hriscu, Lucian Bucharest, RO 4 3
Jitaru, Ionel D Tucson, AZ 16 47

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Burr-Brown Corporation (1)
5,821,826 Oscillator circuit synchronization 3 1996
 
ERICSSON INC. (1)
6,201,723 Simplified current share circuit 6 1999
 
QUALCOMM INCORPORATED (1)
7,002,266 Active DC output control and method for DC/DC converter 8 2002
 
RAYTHEON COMPANY (1)
5,045,712 Synchronized switched mode power supplies 24 1986
 
UNIPOWER CORPORATION (1)
5,724,237 Apparatus and method for sharing a load current among frequency-controlled D.C.-to-D.C. converters 29 1996
 
Unitrode Corporation (1)
5,691,889 Controller having feed-forward and synchronization features 20 1995
 
Western Progress, Inc. (1)
4,496,801 Splicing module test set 5 1982

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
ATI TECHNOLOGIES ULC (1)
8,188,615 Integrated circuit adapted to be selectively AC or DC coupled 0 2009

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