DC-to-DC converter having secondary-side digital sensing and control
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United States of America Patent
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Nov 12, 2013
Grant Date -
Jul 25, 2013
app pub date -
Apr 23, 2012
filing date -
Jan 20, 2012
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Abstract
A DC/DC converter for use in power supply applications employing multiple parallel-connected converters employs a digital controller referenced to the secondary or output side of an isolation boundary and having non-isolated direct connections to secondary side components. The controller directly monitors output voltage and output current and uses feedback control techniques to precisely control these values in a desired manner. The DC/DC converter can implement so-called “droop” current sharing with increased accuracy arising from the secondary-side digital control, so that a desired balanced sharing of current across multiple converters can be achieved. The converter uses calibration establish accurate set points, and any of a variety of additional functions/features to attain operational goals.
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