华中科技大学学报（自然科学版）2026，Vol.54Issue(3)：22-28,7.DOI:10.13245/j.hust.240147
自适应导通电阻的DC-DC重载效率提升方法研究
Research on improving the overload efficiency of DC-DC with adaptive conduction resistance
摘要
Abstract
In order to solve the problem of low conversion efficiency of boost type DC-DC switching power supply under high current load,a power tube adaptive on-resistance method was adopted.By setting different gate-source voltages in different load ranges,the on-off loss of the power tube was reduced,and the problem that the on-off loss accounts for a large proportion in heavy load was solved.The loading efficiency of the system was improved and the layout area was reduced.Based on 0.18 μm BCD process,the physical implementation and experimental analysis of the proposed method were completed.The results show that input voltage 3.7 V,output voltage 4.6 V,10～900 mA wide load range,the system can realize the power tube adaptive on-resistance adjustment.When the load current is 900 mA,the efficiency is increased from 86％to 91.7％,and the maximum efficiency is 97％,which has obvious advantages.关键词
DC-DC转换器/重载/自适应导通电阻/栅源电压/高效率Key words
DC-DC converter/overload/adaptive conduction resistance/gate-source voltage/high efficiency分类
信息技术与安全科学引用本文复制引用
郭仲杰,李梦丽,王亚朋,邱子忆..自适应导通电阻的DC-DC重载效率提升方法研究[J].华中科技大学学报（自然科学版）,2026,54(3):22-28,7.基金项目
国家自然科学基金资助项目(62171367) （62171367）
陕西省重点研发计划资助项目(2021GY-060) （2021GY-060）
陕西省创新能力支撑计划资助项目(2022TD-39) （2022TD-39）
西安理工大学校企协同基金资助项目(252062213). （252062213）
