SPWM控制的交叉反激变换器设计

摘要

设计的SPWM控制的交叉反激变换器,结合了交叉反激变换器的优点与SPWM响应速度快、稳定性高的特性,具有拓扑简单、输出纹波小、稳定性高、关断电压尖峰小等优点.介绍了SPWM波控制交叉反激电路输出互补实现直流正弦半波变换的原理；分析了DSP生成SPWM波的原理和方法；实验验证了设计的合理性不仅提高了电路的整体性能,且没有增加硬件电路设计的负担.%The interleaved flyback converter of SPWM control, makes good use of the advantages of the converter Combined with the fast response and high stability characteristics of SPWM. It has the characteristics of simple topology, small ripple of the output, high stability, small voltage spike of the power switch and so on. It introduced the principle of the complementary output to realize the dc half - sinusoid transform of the output of the interleaved flyback converter of SPWM control, and the theoretical analysis of the principle and method for generating SPWM by DSP. The results of the experiment verified the feasibility of the design, it enhances the overall performance of the circuit and it wouldnt increase the burden of the design of hardware circuit.