华东师范大学学报（自然科学版）Issue(2)：82-94,13.DOI:10.3969/j.issn.1000-5641.2026.02.008
一款高效率、三模式、低EMI的同步整流型Buck DC-DC转换器
High-efficiency,tri-mode,low-EMI synchronized buck DC-DC converter
摘要
Abstract
This paper presents a tri-mode buck converter designed using the 55 nm Complementary Metal-Oxide-Semiconductor(CMOS)process,which offers a peak efficiency of 92.95%for low-EMI applications.The converter employs a seamless transition between pulse-width modulation(PWM),pulse-frequency modulation(PFM),and pulse-skip modulation(PSM)modes under various load conditions,which optimizes the efficiency and ripple performance from light to heavy loads.By implementing spread-spectrum frequency modulation with 35%frequency dithering,the converter reduces the peak of the output voltage spectrum by 22 dB,thus significantly reducing the EMI emission spectrum.关键词
Buck转换器/低EMI/扩频调制/多工作模式/高效率Key words
buck converter/low-EMI/spread spectrum frequency modulation(SSFM)/multiple operating modes/high efficiency分类
信息技术与安全科学引用本文复制引用
丁世翔,郝松茂,石春琦..一款高效率、三模式、低EMI的同步整流型Buck DC-DC转换器[J].华东师范大学学报（自然科学版）,2026,(2):82-94,13.基金项目
上海市科委资助项目(22DZ2229004) （22DZ2229004）
中央高校基本科研业务费专项资助项目(40500-20103-222178) （40500-20103-222178）
