| 摘要 |
An active-clamp current-source push-pull DC-DC converter is provided to improve power conversion efficiency in a wide input voltage range and reduce the voltage stress of a switch by flowing current of an input inductor to a condenser of an active-clamp circuit when two main switches are off. An active-clamp current-source push-pull DC-DC converter includes a primary side circuit unit and a secondary side circuit unit divided by a transformer. The primary side circuit unit is a current-source push-pull circuit unit(100), and has an input inductor(L), main switches(S1,S2), and an active-clamp circuit unit(110). The active-clamp circuit unit(100) has sub switches(S3,S4), and clamp condensers(Cc1,Cc2). The secondary side circuit unit is a full-wave rectifying unit(200).
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