摘要
随着电子技术的发展,电源管理芯片的应用越来越广泛,其中DC-DC电源管理芯片应用的设计技术更是得到了广泛的关注。在DC-DC变换器的设计过程中,芯片稳定性是最开始就需要考虑的几个问题之一。本文利用一种新型的内部频率补偿技术,使得芯片的整个控制环路有着良好的相位裕度和单位增益带宽,从而增加了芯片稳定性和瞬态响应速度。并通过MATLAB建立一个确定性能要求的降压式DC-DC电源模型,仿真结果证明了理论研究的正确性。
Power management integrated circuit has been attracted much more attention with the development of electronic technology,especially DC-DC power management integrated circuit.For the DC-DC converter,during its design process,stability is one of the most important aspects which should be paid much more attention at the beginning of the design.In this paper,a novel inner technology has been adopted,which can guarantee the whole circuit with high margin and unit gain width.In this way,the stability of the chip can be guaranteed and an ideal response speed can be obtained at the same time.A stability model has been founded in Matlab environment for this kind of strucutre.Simulation result shows the reasonability of this model.
出处
《电子测试》
2011年第8期1-3,共3页
Electronic Test
基金
北京市科学技术研究院创新团队计划项目资助(IG201005N)
