不需要任何辅助开关或无源谐振网络，变换器就可在双向变换工作中实现零电压开关。

Without the need of any auxiliary switches or complex passive resonant network, the converter can achieve ZVS in both forward and backward modes.

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基于时间延迟反馈近似思想，提出一类无源反馈控制方法，实现了电压模式Buck变换器的混沌控制。

A kind of passive feedback chaotic control in the voltage-mode Buck converter is presented based on the approximation concept of time-delayed feedback control (TDFC).

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