一种交错并联的多路输出BUCK变换器

针对EMI干扰源，设计了一种交错并联控制方式的多路输出BUCK变换器。详细介绍了交错并联控制的工作方式，对其进行了时域和频域分析，与同相控制方式进行了比较，并通过Saber仿真软件对其进行了仿真验证。最后完成了一台28V输入，四路18V/1.5A输出的实验样机，测试结果表明，交错并联控制方式可以有效的减小干扰源的1次谐波的幅值，提高基波频率，为实现LOW-EMI变换器提供有效途径。

One Kind of Multiple-Output BUCK Converter with Interleaving Parallel Control Mode

For the EMI noise source, a multiple-output BUCK converter is designed with interleaving parallel control mode which is introduced in detail and analyzed in time domain and frequency domain, as well as compared with the in phase control mode,and toverify the theoretical analysis, simulated by Saber simulation software. In the end, a prototype of 28V input and four 18V/1.5A outputs is finished and the test results verify that the interleaving parallel control mode can reduce the amplitude of first harmonic from the noise source, which provide an effective approach to realize the LOW-EMI power regulator.