| 交错并联Buck变换器轻载效率的优化设计 |
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| 引用本文： | 杨玉岗,苗怀锦,许静,关婷婷. 交错并联Buck变换器轻载效率的优化设计[J]. 电源学报, 2019, 17(6): 15-19 |
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| 作者姓名： | 杨玉岗 苗怀锦 许静 关婷婷 |
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| 作者单位： | 辽宁工程技术大学电气与控制工程学院, 葫芦岛 125105,辽宁工程技术大学电气与控制工程学院, 葫芦岛 125105,辽宁工程技术大学电气与控制工程学院, 葫芦岛 125105,辽宁工程技术大学电气与控制工程学院, 葫芦岛 125105 |
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| 基金项目： | 国家自然科学基金资助项目（51177067，U1510128）；辽宁省教育厅重点实验室基础研究资助项目（LZ2015045） |
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| 摘 要： | 为了提高交错并联Buck变换器的轻载效率,在之前通道控制的基础上,提出了轮换型通道控制方案。当变换器工作在满载时,采用PWM控制方式;当变换器工作在轻载时,采用PFM控制方式,减少了因某一通道开关器件长期工作所带来的老化效应,使得变换器在全负载范围内具有更高的效率。以4相交错并联Buck变换器为例,通过仿真和实验验证了理论分析的可行性。
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| 关 键 词： | 交错并联 Buck变换器 轻载效率 轮换型通道控制 |
| 收稿时间： | 2017-03-15 |
| 修稿时间： | 2019-01-20 |
Optimal Design for Light-load Efficiency of Interleaved Parallel Buck Converter |
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| YANG Yugang,MIAO Huaijin,XU Jing and GUAN Tingting. Optimal Design for Light-load Efficiency of Interleaved Parallel Buck Converter[J]. Journal of Power Supply, 2019, 17(6): 15-19 |
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| Authors: | YANG Yugang MIAO Huaijin XU Jing GUAN Tingting |
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| Affiliation: | Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China,Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China,Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China and Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China |
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| Abstract: | To improve the light-load efficiency of an interleaved parallel Buck converter, an alternating channel control scheme is proposed on the basis of the previous channel control. When the converter operates at full load, a PWM control mode will be used. When the converter operates at light load, a PFM control mode will be used, thus alleviating the aging effect due to the long-term operation of switching devices in one certain channel. In this way, the converter can operate with a high efficiency in the full-load range. A 4-phase interleaved parallel Buck converter was taken as an example, and the validity of theoretical analysis was verified by simulation and experimental results. |
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| Keywords: | interleaved parallel Buck converter light-load efficiency alternating channel control |
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