CONTROL METHOD IN USE OF ACTIVE-CLAMP FLYBACK POWER CONVERTER
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United States of America Patent
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Issued Date -
Mar 25, 2021
app pub date -
May 13, 2020
filing date -
Sep 25, 2019
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Abstract
A control method is introduced to operate an ACF power converter under a non-complimentary mode. A high-side switch is turned ON at least twice within a switching cycle of a low-side switch, to provide at least two high-side ON times. One of the high-side ON times follows the end of demagnetization time of a transformer in the ACF power converter, and the other follows the end of the blanking time that controls the maximum switching frequency of the low-side switch.
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