Feed forward controlling circuit and method for voltage ripple restraint
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United States of America Patent
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May 29, 2018
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N/A
app pub date -
Aug 15, 2016
filing date -
Jan 20, 2016
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Abstract
A feed forward controlling circuit is used to perform a feed forward controlling method to restrain ripple of the output voltage in a power converter. The power converter is controlled by a control signal outputted from an output terminal of a controller. The method includes steps of: receiving an output voltage from an output terminal of a voltage converter; attenuating the output voltage to generate an electrical signal; acquiring a DC signal from the electrical signal; and obtaining a ripple compensation signal in accordance with the electrical signal and the DC signal to output to an output terminal of a controller. The output terminal of the controller outputs a control signal to control the power converter.
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