中文摘要：

以同步整流（SR—Buck）变换器为研究对象，介绍了一种新的控制算法一并行电流模式控制。该算法基于离散域推导，易于数字实现。论文给出了算法的数字控制框图，并基于FPGA控制芯片设计了并行电流模式控制的SR—Buck变换器实验样机，进行了实验研究，实验结果表明了与传统的峰值电流模式控制算法相比，该算法能有效地改善负载突变及输入电压突变下Buck变换器的动态响应。

英文摘要：

Parallel current mode control method for SR-Buck converter was presented, which is derived based on discrete domain and optimized for digital implementation. Based on the principle of the control algorithm, the digital implementation diagram of the proposed algorithm was present. In addition, an experimental prototype of parallel current mode controlled SR-Buck converter using a FPGA was built to verify the new control algorithm. The experiment results show that parallel current mode control has superior performance compared with peak current mode control under load and input voltage variations.