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In this paper, a family of ZVZCS dual switch flyback dc-dc converters were analyzed, which all feature soft-switching, low voltage stresses and good adaptability of wide range input. The main switches and auxiliary switch of these converters realize zero-voltage turning-on (ZVS) and the rectifier diode achieves zero-current turning-off (ZCS). They adopt different auxiliary circuit to realize soft-switching...
This paper illustrates the rectifier stress issue of the active clamped dual switch forward converters operating on discontinuous current mode (DCM), and analyzes the additional reverse voltage on the rectifier diode of active clamped dual switch forward converter at DCM operation, which does not appear in continuous current mode (CCM). The additional reverse voltage stress, plus its spikes, definitely...
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