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公开(公告)号：IE991074A1
公开(公告)日：2000-09-06
申请号：IE991074
申请日：1999-12-17
Applicant: FORFAS
Inventor： MORRISON RICHARD JOSEPH , EGAN MICHAEL GERARD
Abstract: An ac/dc converter has a two switch buck boost (2SBB) ac/dc stage (2) integrated with an isolated full or half-bridge dc/dc stage (3). A modulator (4,25) for the 2SBB input switch (Q1) controls the current in the power transfer inductor of the 2SBB. It causes discontinuity of the current while minimising its peak level by exerting control on both turn-on and turn-off of the input switch. An intermediate dc voltage generated by the 2SBB has a level below that of the maximum peak input voltage and control is exerted over the inrush current.
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