Abstract：A novel digital average voltage (DAV) control technique for switching converter with fast load transient response is proposed. Taken Buck converter as an example, the principle of DAV controlled switching converter is introduced, and its z-domain model is established to investigate system stability. Moreover, its stability and load transient performance are analyzed, and the comparisons with digital V2 controlled buck converter are carried out. The results show that DAV controlled buck converter has better stability, which can work stably in the whole range of duty ratio. Moreover, the load transient performance of DAV control is better than that of digital V2 control. Finally, the correctness of the theoretical analysis is proved by simulation and experimental results.
章伟, 周国华, 刘啸天, 徐顺刚. 具有快速负载瞬态响应的开关变换器数字均值电压控制方法[J]. 电工技术学报, 2018, 33(4): 856-864.
Zhang Wei, Zhou Guohua, Liu Xiaotian, Xu Shungang. Digital Average Voltage Control Technique for Switching Converter with Fast Load Transient Response. Transactions of China Electrotechnical Society, 2018, 33(4): 856-864.
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