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Boost converter switches between battery and USB power

Posted: 21 Nov 2006     Print Version  Bookmark and Share

Keywords:boost-converter  switchover  USB  LDO  step-up converter 

PCs now include a USB terminal, and many of these terminals can supply power as well as transmit the data necessary for mice, PDAs, MP3 players, and similar.

Now, a more general step-up converter architecture can accomplish automatic switchover between USB port and battery with minimum circuits. A low-dropout linear regulator or LDO connects between the USB power line and the output of a step-up converter.

View the PDF document for more information.

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