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    • 2. 发明授权
    • Active-clamp current-source push-pull DC-DC converter
    • 有源钳位电流源推挽式DC-DC转换器
    • US07573731B2
    • 2009-08-11
    • US11466825
    • 2006-08-24
    • Bong Hwan KwonJung Min Kwon
    • Bong Hwan KwonJung Min Kwon
    • H02M3/335H02H7/122
    • H02M3/3372H02M3/33569Y02B70/1433
    • Provided is a current-source push-pull DC-DC converter using an active clamp circuit for reusing energy of leakage inductances by not only diodes on a secondary side of a transformer being zero-current switched using a series-resonant full-wave rectifier, but also the active clamp circuit on a primary side of the transformer, which provides a discharge path of the energy stored in the leakage inductances, increases power conversion efficiency even for a wide input voltage range and reduces a switch voltage stress as compared to a conventional current-source push-pull circuit by operating even for a duty ratio below 0.5 by flowing a current of an input inductor through capacitors of the active clamp circuit when both main switches are off.
    • 提供了一种使用有源钳位电路的电流源推挽DC-DC转换器,其不仅使用串联谐振全波整流器进行零电流切换的变压器次级侧上的二极管,以重新利用漏电感的能量, 而且还提供了在变压器的初级侧的有源钳位电路,其提供存储在漏电感中的能量的放电路径,即使对于宽的输入电压范围也提高了功率转换效率,并且与常规的相比降低了开关电压应力 当两个主开关断开时,通过使输入电感器的电流通过有源钳位电路的电容器流过来,即使占空比低于0.5也能使电流源推挽电路工作。