1MHz sampled quick response digital control DC-DC converter
1MHz sampled quick response digital control DC-DC converter
复制标题
1MHz采样快速响应数字控制DC-DC转换器
DOI：
10.1109/iecon.2013.6699123
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Yudai Furukawa
中科院分区：
文献类型：
--
作者：
Fujio Kurokawa;Yudai Furukawa
本文的目的是介绍 1MHz 采样快速响应数字控制 DC-DC 转换器。所提出的方法是带有FIR 滤波器和P 控制的数字控制方法。在所提出的方法中，FIR滤波器的系数通过四舍五入到小数点后三位来近似，以减少计算成本。近似的 FIR 滤波器也具有与原始滤波器相同的特性。此外，FIR滤波器与P控制相结合，改善了瞬态响应。 P 控制的采样频率设置为 1MHz。它是开关频率的十倍。因此，所提出的方法几乎不受数字控制特有的延迟时间的影响。实验中，输出电压的下冲比传统的FIR滤波器控制方法改善了38%。此外，该方法的输出电压收敛时间提高了 56%。因此，所提出的方法可以实现优异的瞬态响应。
The purpose of this paper is to present the 1MHz sampled quick response digital control dc-dc converter. The proposed method is the digital control method with the FIR filter and the P control. In the proposed method, the coefficient of the FIR filter is approximated by being rounded to three decimal place for reducing the cost of the calculation. The approximated FIR filter has also same characteristics as the original one. Moreover, the FIR filter is combined with the P control to improve the transient response. The sampling frequency for the P control is set 1MHz. It is ten times against the switching frequency. Thus, the proposed method is hardly affected by the peculiar delay-time of the digital control. In the experiment, the undershoot of the output voltage is improved by 38% than the conventional FIR filter control method. Furthermore, the convergence time of the output voltage in proposed method is improved by 56%. As a result, the proposed method can realize superior transient response.