一种低电流纹波的低压大电流DC-DC变换器的研究

通过n个倍流整流结构交错并联方式用以进一步减小纹波电流。给出了电路的开关信号波形和仿真模型，并使用Pspice仿真软件对该模型进行仿真，取得满意效果。最后通过实验验证。这种结构特别适用于通信设备、计算机、宇航等领域的电源。

Research of an Interleaved Low-Voltage/High-Current DC- DC Converter

In the recent years, the operating voltages of most high-performa nce microprocessors were lower than that of the previous ones and the research of l ow-vo ltage/high-current DC-DC converter was enhanced. Among all topologies, the cu rr ent-doublers topology is optional. In the current-doublers topology, the rippl e current of the output filter capacitor is reduced because the ripple current of the two inductors partially cancel each other and the required value of the filt er inductance is significantly decreased. To further decrease the ripple current of output filter capacitor, this paper introduce a new method that a few of cur rent-doublers are interleaved. This paper gives the switch signal waveforms and simulation model of the circuit. PSpice is used, which is a simulation tool for electronic system. The result of simulation achieves the ideal effect. Finally, the design is tested by an experiment.