[1]王青,王绍权,黄秋华,等.一种数字控制可变输出DC-DC转换器的设计[J].东南大学学报(自然科学版),2012,42(6):1058-1062.[doi:10.3969/j.issn.1001-0505.2012.06.007]
 Wang Qing,Wang Shaoquan,Huang Qiuhua,et al.Design of digital controlled DC-DC converter with variable output voltage[J].Journal of Southeast University (Natural Science Edition),2012,42(6):1058-1062.[doi:10.3969/j.issn.1001-0505.2012.06.007]
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一种数字控制可变输出DC-DC转换器的设计()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第6期
页码:
1058-1062
栏目:
电路与系统
出版日期:
2012-11-20

文章信息/Info

Title:
Design of digital controlled DC-DC converter with variable output voltage
作者:
王青 王绍权 黄秋华 陈秀玲 徐申 孙伟锋 时龙兴
东南大学国家专用集成电路系统工程技术研究中心, 南京 210096
Author(s):
Wang Qing Wang Shaoquan Huang Qiuhua Chen Xiuling Xu Shen Sun Weifeng Shi Longxing
National ASIC System Engineering Research Center, Southeast University, Nanjing 210096, China
关键词:
DC-DC转换器 数字控制 预测算法 多采样 可变输出
Keywords:
DC-DC converter digital control prediction algorithm multi-sampling variable output
分类号:
TN4
DOI:
10.3969/j.issn.1001-0505.2012.06.007
摘要:
针对SoC中的动态电压调节技术,设计了一款可变输出的数字控制Buck型DC-DC变换器.首先,采用基于系统模型的轨迹预测方法,根据当前开关周期电感电流和输出电压的采样值,并基于电感、电容的储能特性,预测出下一开关周期的电感电流和输出电压值; 然后,将此预测值代替实际采样值,补偿环路时延,提高瞬态响应.此外,采用多采样技术减弱随机噪声的影响.本设计采用SMIC 65nm工艺实现.测试结果表明,当仿真预测值与实际采样值之间的最大偏差小于15mV时,输出电压的稳态误差可控制在5mV内.负载和参考电压变化时,输出电压的瞬态响应时间分别为122.3和476.1μs,电源调整率为14.37%.
Abstract:
Aiming for the dynamic voltage scaling technology in SoC(system on chip), a digital controlled DC-DC Buck converter with variable output voltage is designed. First, a trajectory prediction method based on system model is used. Based on the sampling values of the inductor current and the output voltage at the current switching cycle, the inductor current and the output voltage at the next switching cycle are predicted according to the characteristics of energy storage devices such as inductor and capacitor. Then, these predictive values are used to substitute the actual sample values, which can compensate the loop time delays and improve the transient responses. Besides, the multiple-sample technology is adopted to minimize the effect of random noise. The circuit is designed on the SMIC 65nm process. The experimental results show that when the maximum deviation between the prediction values and the actual ones is less than 15mV, the steady-state error of the output voltage can be controlled within 5mV. When the load current and the reference voltage change, the transient response time of the output voltage are 122.3 and 476.1μs,respectively. The line regulation is 14.37%.

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相似文献/References:

[1]孙大鹰,徐申,孙伟锋,等.Buck型DC-DC变换器中数字预测模糊PID控制器的设计与实现[J].东南大学学报(自然科学版),2014,44(5):897.[doi:10.3969/j.issn.1001-0505.2014.05.004]
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备注/Memo

备注/Memo:
作者简介: 王青(1981—),女,博士生; 时龙兴(联系人),男,博士,教授,博士生导师,lxshi@seu.edu.cn.
基金项目: 江苏省自然科学基金资助项目(BK2010167)、江苏省“青蓝工程”资助项目.
引文格式: 王青,王绍权,黄秋华,等.一种数字控制可变输出DC-DC转换器的设计[J].东南大学学报:自然科学版,2012,42(6):1058-1062. [doi:10.3969/j.issn.1001-0505.2012.06.007]
更新日期/Last Update: 2012-11-20