一种适合低压大电流输出的多路交错LLC谐振变换电路

A Multi-channel Interleaved LLC Resonant Circuit Suitable for Low-voltage and Highcurrent Output

在低压大电流直流输出电源中,单一LLC谐振变换器存在输出端电流脉动大、需要的滤波电容数量庞大及可靠性低等问题。因此,提出一种采用多路交错并联LLC电路输出低压大电流的电路拓扑,具有输出电流脉动小、高效率、高功率密度、低成本及高可靠性等优势,同时对电路进行了仿真研究。

In the DC power supply with low output voltage and high output current,the single LLC resonant converter has technical bottlenecks such as large output current ripple,large number of output filter capacitors,and low reliability.Proposes a circuit topology that uses multiple interleaved parallel LLC circuits to output low voltage and high current,which has the advantages of small output current ripple,high efficiency,high power density,low cost and high reliability.Finally,a simulation study is carried out.