摘要
本文提出了一种在轻载工作环境下依然高效的PWM DC/DC buck变换器。该变换器由TSMC 1.8/3.3 V 0.18μm CMOS技术设计而成。通过DCM操作,不仅能在满载时达到高效率,而且在不利用任何PFM技术的情况下大大提升轻载下的效率。这种变换器轻载时的输出精确性和输出纹波都优于PFM变换器,而在满载时与普通的PWM变换器同样稳定、高效,通过Saber仿真与电路实验验证了变换器的可行性。
A high-efficiency PWM DC-DC buck converter under light-load condition is presented.It is designed by using TSMC 1.8/3.3 V 0.18 μm CMOS technology,with DCM operation not only can reach high efficiency in heavy-load,but also has great improvement in light-load efficiency without using any PFM techniques.The output accuracy and the output ripples are better than PFM converters under light-load,and as good as a normal PWM converter under heavy-load.Utilize saber simulation and circuit experiment verify the converter’s feasibility.
出处
《科学技术与工程》
北大核心
2013年第34期10313-10317,共5页
Science Technology and Engineering
