| 基于恒定导通时间的V~2控制方法研究 |
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| 引用本文： | 沈霞,王洪诚,方玮. 基于恒定导通时间的V~2控制方法研究[J]. 电测与仪表, 2009, 46(11) |
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| 作者姓名： | 沈霞 王洪诚 方玮 |
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| 作者单位： | 西南石油大学,电子信息工程学院,成都,610500 |
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| 基金项目： | 西南石油大学科技基金项目 |
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| 摘 要： | 恒定导通时间控制的Buck电路瞬态响应速度快,控制电路简单,但其电压调整率差,影响了其在电压调整模块(VRM)中的应用.为了提高其电压调整率,本文首先分析了基于恒定导通时间控制的Buck电路电压调整率差的原因,提出并分析了基于恒定导通时间的V2控制,通过仿真和实验对比了这两种控制方法,结果证明了基于恒定导通时间的V2控制方法具有快速的瞬态响应,而且提高了电压调整率,与恒定导通时间控制相比更适合应用在电压调整模块中.
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| 关 键 词： | 恒定导通时间 V2控制 电压调整率 |
Research of the V~2 Control Method Based on Constant on Time |
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| SHEN Xia,WANG Hong-cheng,FANG Wei. Research of the V~2 Control Method Based on Constant on Time[J]. Electrical Measurement & Instrumentation, 2009, 46(11) |
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| Authors: | SHEN Xia WANG Hong-cheng FANG Wei |
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| Affiliation: | SHEN Xia,WANG Hong-cheng,FANG Wei (Southwest Petroleum University,Chengdu 610500,China) |
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| Abstract: | The dynamic response of Buck circuit with COT (Constant On-Time) control is very fast,and its control circuit is simple. But its voltage regulation is not good,which inflects its application. To improve the voltage regulation,reasons of the bad voltage regulation of buck converter with COT control method are analyzed in this paper. The V2 control method based on constant on-time is used to improve voltage regulation. The COT control and the V2 control method based on constant on-time are compared through si... |
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| Keywords: | constant on-time V2 control voltage regulation |
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