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Although LLC series resonant converter has advantages of wide operation range and high efficiency, hold up time requirement makes it difficult to optimal design at normal operating condition, results in increasing transformer size and low efficiency. In this paper, LLC series resonant converter with auxiliary circuit is proposed. Compare with conventional LLC series resonant converter, higher gain...
This paper proposes a two-stage configuration of AC/DC converter employing load-adaptive link-voltage-adjusting technique with load power estimator. The proposed technique helps to maintain high efficiency over all the load condition despite the output voltage varies according to the load power. In addition, since the proposed circuit uses low-loss load power estimator to adjust the output voltage,...
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