Digital Peak Voltage Control of Buck Converter with Multi-sample Technique

摘要：

Digital control implementation of switching dc-dc converters has benefits of flexibility; however, time delay and quantization errors will degrade the transient performance of switching dc-dc converters due to the degradation of the bandwidth of the digital controller. In this paper, multi-sample technique is proposed as a way to decrease the sample effect in the control loop of switching dc-dc converters. By adopting multi-sample technique and an improved calculation method to decrease the time delay in calculation, a digital platform with improved performance for switching dc-dc converters is established. With ideal transition waveform as dynamic reference, ripple calibration is performed to sense the perturbations by means of sensing the slope of the output voltage ripple. It retrieves the advantage of analog peak voltage control by sensing the perturbations via slope variation. A comprehensive study of the dynamic performance for buck converters with the algorithms has also been performed.

作者: Mingzhi He Jianping Xu Zhongwen Zhou Ni Chen Guohua Zhou

作者单位: College of Electrical Engineering, Southwest Jiaotong University Chengdu, Sichuan, 610031, P.R.China Sichuan Radio and TV University Chengdu, Sichuan, 610073, P.R.China

会议类型: 国际会议

会议名称: 2007年通信、电路与系统国际会议(2007 International Conference on Communications,Circuits and Systems Proceedings)

会议地点: 日本福冈

会议语种:英文

在线出版日期: 2007-07-11（万方平台首次上网日期，不代表论文的发表时间）