自适应导通电阻的DC-DC重载效率提升方法研究OA
Research on improving the overload efficiency of DC-DC with adaptive conduction resistance
为了解决Boost型DC-DC开关电源在大电流负载时系统转换效率较低的问题,采用了一种功率管自适应导通电阻的方法.通过在不同负载范围设置不同栅源电压的方法来减小功率管的导通损耗,解决了重载时导通损耗占比较大的问题,在提高了系统重载效率的同时也减小了版图面积.基于0.18 μm BCD工艺完成了对所提出方法的物理实现与实验分析,结果表明:在输入电压3.7 V,输出电压4.6 V,10～900 mA宽负载范围内,系统可以实现功率管的自适应导通电阻调整,将负载电流900 mA时的效率由86％提升到91.7％,最高效率为97％,具有明显的优势.
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.
郭仲杰;李梦丽;王亚朋;邱子忆
西安理工大学自动化与信息工程学院,陕西西安 710048西安理工大学自动化与信息工程学院,陕西西安 710048西安理工大学自动化与信息工程学院,陕西西安 710048西安理工大学自动化与信息工程学院,陕西西安 710048
信息技术与安全科学
DC-DC转换器重载自适应导通电阻栅源电压高效率
DC-DC converteroverloadadaptive conduction resistancegate-source voltagehigh efficiency
《华中科技大学学报（自然科学版）》 2026 (3)
22-28,7
国家自然科学基金资助项目(62171367)陕西省重点研发计划资助项目(2021GY-060)陕西省创新能力支撑计划资助项目(2022TD-39)西安理工大学校企协同基金资助项目(252062213).
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