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US 2013/0076321 A1Published application
Dc-dc converter and dc-dc conversion method
AssigneeKabushiki Kaisha Toshiba
InventorsHiroshi SAITO, Yuichi Goto
Life of this patent
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Abstract
A DC-DC converter has a plurality of DC-DC converting units, a plurality of inductor elements, a plurality of duty detection circuits, and a duty adjustment circuit configured to compare output signals from two detection circuits as each group, and to adjust the duty ratio of the DC-DC converting unit connected to one of the two duty detection circuits based on a result of comparing the output signals so that the duty ratio of the square wave voltage of each group becomes equal.
Claims20
A DC-DC converter comprising:
- a plurality of DC-DC converting units outputting a square wave voltage;
- a plurality of inductor elements, each inductor element being connected to each of the DC-DC converting units, and comprising one end connected to an output terminal of its corresponding DC-DC converting unit and another end connected to a common external output terminal;
- a plurality of duty detection circuits, each duty detection circuit being connected to the output terminals of each of the DC-DC converting units, and to detect a duty ratio of the square wave voltage outputted from its corresponding DC-DC converting unit;
- and
- a duty adjustment circuit comparing output signals from the duty detection circuits, and to adjust the duty ratio of the DC-DC converting unit connected to one of the duty detection circuits based on a result of comparing the output signals so that the duty ratio of the square wave voltage of each of the DC-DC converting units becomes equal.
2 more elements
A DC-DC conversion method, comprising:
- detecting a duty ratio of a square wave voltage outputted from each of a plurality of DC-DC converting units;
- comparing two signals obtained by detecting the duty ratio of the square wave voltage, and adjusting the duty ratio of one of the DC-DC converting units so that the duty ratio of the square wave voltage becomes equal;
- and
- outputting a direct voltage corresponding to the square wave voltage.
1 more element
Dependencies are inferred from the claim text.