Switching regulator circuit configured to perform step up and step down operations and operation method therefor
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United States of America Patent
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Aug 6, 2013
Grant Date -
May 12, 2011
app pub date -
Oct 26, 2010
filing date -
Nov 11, 2009
priority date (Note) -
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Abstract
A switching regulator circuit for achieving stepping-up or stepping-down, including a basic circuit and an inductor connected to the basic circuit. The basic circuit includes a switching circuit to perform switching, a control circuit to control the switching circuit, a first terminal connected to one end of the inductor and the switching circuit, and second and third terminals connected to the switching circuit. When the input voltage is stepped up, the control circuit causes the switching circuit to charge the inductor via the first terminal and the third terminal and to discharge the inductor via the first terminal and the second terminal. When the input voltage is stepped down, the control circuit causes the switching circuit to charge the inductor via the first terminal and the second terminal and to discharge the inductor via the first terminal and the third terminal.
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