Small-Signal Modeling and Load Transient Characteristic Analysis of Current Mode Controlled Tri-State Boost Converter

被引：0
|
作者：
Zeng S. [1 ]
Zhou G. [1 ]
Zhou S. [1 ]
Mao G. [1 ]
机构：
[1] Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle, School of Electrical Engineering, Southwest Jiaotong University, Chengdu
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 07期
关键词：
Current mode control; Load transient response; Small-signal modeling; Tri-state Boost converter;
D O I：
10.19595/j.cnki.1000-6753.tces.180395
中图分类号：
学科分类号：
摘要：
To improve the load transient response speed, the current mode control technique was applied to tri-state boost converter, whose corresponding operation principle was analyzed in detail. On the basis of considering the influence of output current variation for the circuit performance, the whole small signal models for the current mode constant reference current (CRC) and current mode dynamic reference current (DRC) controlled tri-state boost converter were established respectively. Based on the models, the output impedances of the two control techniques were deduced respectively, which were verified through the simulation results in frequency-domain. Besides, the corresponding low-frequency gains of the output impedances were analyzed and compared. The research results indicate that, comparing with the current mode DRC control, the current mode CRC controlled tri-state boost converter has lower low-frequency gains, therefore it has faster load transient response speed. Finally, experiment results verified the theoretical analysis. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1468 / 1477
页数：9
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