CAJ | 학술논문

　　针对微波功率模块集成电源应用，研究了一种附加非最小电压应力无源无损缓冲电路的 Buck变换器，通过缓冲元件的作用，实现了开关管的零电流开通(ZCS)和零电压关断(ZVS)，有效降低了开关损耗，同时将缓冲元件所存储的能量进行转移和反馈，达到了无损的效果。这里首先对变换器的稳态过程进行详细的时域分析；其次给出了一种基于开关损耗最小的参数优化设计方法；最后通过仿真和实验进行了验证。
　　침대미파공솔모괴집성전원응용，연구료일충부가비최소전압응력무원무손완충전로적 Buck변환기，통과완충원건적작용，실현료개관관적령전류개통(ZCS)화령전압관단(ZVS)，유효강저료개관손모，동시장완충원건소존저적능량진행전이화반궤，체도료무손적효과。저리수선대변환기적은태과정진행상세적시역분석；기차급출료일충기우개관손모최소적삼수우화설계방법；최후통과방진화실험진행료험증。
This paper discusses a Buck converter with NMVS passive lossless circuit, applied to the MPM integrated power conditioner. The buffer components contribute to realizing the ZCS and ZVS of MOSFET, and could reduce switching loss effectively. Meanwhile, the energy of buffer components is transferred and fed back, thus to achieves lossless effect. Firstly, the steady state process is analyzed in detail from time domain. Then an optimal design method based on minimized switching loss is proposed. Finally, simulation and experiment indicate the validity of theoretical analysis.