Adaptive tuning of digitally controlled switched mode power supplies based on desired phase margin
Adaptive tuning of digitally controlled switched mode power supplies based on desired phase margin
复制标题
基于所需相位裕度的数控开关模式电源的自适应调谐
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
D. Maksimović
中科院分区：
文献类型：
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作者：
J. Morroni;R. Zane;D. Maksimović
本文提出了一种用于数控开关电源（SMPS）的在线自适应调谐技术。该方法基于对系统交叉频率和相位裕度的连续监控，然后采用多输入多输出 (MIMO) 控制环路，连续并发地调整补偿器参数以满足交叉频率和相位裕度目标。导出小信号模型并设计 MIMO 控制环路，以在各种操作条件下实现稳定性和性能。使用适度的硬件资源，所提出的方法可以在正常闭环 SMPS 操作期间实现自适应调谐。展示了同步降压 SMPS 系统功能的实验结果。
This paper presents an online adaptive tuning technique for digitally controlled switched-mode power supplies (SMPS). The approach is based on continuous monitoring of the system crossover frequency and phase margin, followed by a multi-input multi-output (MIMO) control loop that continuously and concurrently tunes the compensator parameters to meet crossover frequency and phase margin targets. Small-signal models are derived and the MIMO control loop is designed to achieve stability and performance over a wide range of operating conditions. Using modest hardware resources, the proposed approach enables adaptive tuning during normal closed-loop SMPS operation. Experimental results demonstrating system functionality are presented for a synchronous buck SMPS.