Dynamic hysteresis band control of the buck converter with fast transient response

被引:75
|
作者
Leung, KKS [1 ]
Chung, HSH [1 ]
机构
[1] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China
关键词
boundary control; DC-DC power conversion; large-signal stability; state trajectory prediction;
D O I
10.1109/TCSII.2005.850411
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A dynamic hysteresis control of the buck converter for achieving high slew-rate response to disturbances is proposed. The hysteresis band is derived from the output capacitor current that predicts the output voltage magnitude after a hypothesized switching action. Four switching criteria are formulated to dictate the state of the main switch. The output voltage can revert to the steady state in two switching actions after a large-signal disturbance. The technique is verified with the experimental results of a 50 W buck converter.
引用
收藏
页码:398 / 402
页数:5
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