Power supply and method for compensating low-frequency output voltage ripple thereof
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United States of America Patent
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Aug 23, 2016
Grant Date -
Mar 17, 2016
app pub date -
Dec 11, 2014
filing date -
Sep 11, 2014
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Abstract
A power supply has a power factor correction (PFC) circuit and a DC to DC conversion circuit. A DC to DC controller of the DC to DC conversion circuit acquires zero-crossing information and load information from the PFC circuit through a communication protocol, and performs a low-frequency compensation on a control command using a table-mapping means, thereby resolving the issues of higher controller complexity, changes of entire response characteristics and cost increase in conventional compensation technique.
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