具有稳压比较器控制的鲁棒交叉调节抑制单电感多输出dc-dc变换器

2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI:10.1109/MWSCAS.2015.7282117

Yanqi Zheng, M. Ho, K. Leung, Jianping Guo, Hua Chen

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引用次数: 1

摘要

提出了一种具有稳压比较器控制的鲁棒交叉调节抑制单电感多输出(SIMO) dc-dc变换器。该控制方案有效地结合了基于比较器和线性补偿器的控制器，实现了快速的负载瞬态响应和对其他输出通道的低交叉调节。该控制算法不依赖于对电感电流传感器精度敏感的占空电感电流前馈。因此，它可以为SIMO dc-dc变换器提供大范围负载的鲁棒交叉调节抑制。此外，该控制算法与平均电感电流控制相结合，适用于SIMO dc-dc变换器，该变换器具有各子变换器的自升压特性，适用于动态电压缩放应用。

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A robust cross-regulation-suppressed single-inductor multiple-output dc-dc converter with duty-regulated comparator control

A robust cross-regulation-suppressed single-inductor multiple-output (SIMO) dc-dc converter with duty-regulated comparator control is proposed. The control scheme effectively combines comparator-based and linear-compensator-based controllers to achieve fast load-transient response and low cross regulation to other output channels simultaneously. The control algorithm does not rely on duty-inductor-current feed-forward which is sensitive to the accuracy of inductor-current sensor. As a result, it can provide robust cross-regulation suppression for a wide range of loading for the SIMO dc-dc converter. Moreover, together with the average-inductor-current control, the proposed control algorithm is suitable for SIMO dc-dc converter which has auto-buck-boost property for each sub-converter, which makes the SIMO converter suitable for dynamic voltage scaling applications.

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2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)

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