空天预警研究学报2025，Vol.39Issue(5)：379-383,390,6.DOI:10.3969/j.issn.2097-180X.2025.05.014
一种DCM下高效Buck变换器脉冲频率调制方法
A pulse frequency modulation method for high-efficiency Buck converters in DCM
刘劭薇 1郭维锋 1倪屹1
作者信息
- 1. 江南大学集成电路学院,江苏 无锡 214122
- 折叠
摘要
Abstract
In order to meet the demand for high-efficiency power management in modern military electronic equipment,this paper aims at the issue of low efficiency in synchronous Buck converters operating stably under discontinuous conduction mode(DCM)load conditions to propose an improved pulse frequency modulation meth-od,and then relies on the Buck converter with improved pulse frequency modulation to design the zero-crossing detection module.Simulation results are shown as below:The proposed method achieves lower power consump-tion while maintaining system stability.Within the light-load range,the converter can output the target voltage of 1.8 V,and the conversion efficiency of the Buck converter can reach 92.4%under a light load with a 10 mA load current,which is 30.32%higher than the structure of the traditional PWM mode control method.关键词
Buck变换器/脉冲频率调制/不连续导通模式/过零检测电路Key words
Buck converter/pulse frequency modulation/discontinuous conduction mode/zero-crossing detec-tion circuit分类
信息技术与安全科学引用本文复制引用
刘劭薇,郭维锋,倪屹..一种DCM下高效Buck变换器脉冲频率调制方法[J].空天预警研究学报,2025,39(5):379-383,390,6.
