Switch mode power converter with overshoot and undershoot transient control circuits
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United States of America Patent
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Oct 31, 2017
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N/A
app pub date -
Sep 9, 2016
filing date -
Sep 9, 2016
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Abstract
Circuits and methods control output voltage overshoot and undershoot of an SMPC in response to a load current transient. The SMPC control stage has at least one load variation detector that compares a feedback signal with at least one transient threshold level to determine that occurrence of the load current transient. When the load current transient has occurred, the at least one load variation detector causes a switch stage to be turned on to source or sink current to or from the load circuit to compensate the load current transient. A slope detector determines a change in polarity of the slope of the load current transient. When the slope changes polarity, the slope detector sends a signal for preventing an overshoot or an undershoot of the output voltage of the SMPC once the load current transient has been compensated.
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