带有MPPT功能的高效率光伏电池升压转换器芯片  

A High Efficiency Boost Converter Chip with MPPT Function for PV Cell

作　　者：朱浠文 姜庆 秦鹏 胥凯旋 张宇峰 ZHU Xiwen;JIANG Qing;QIN Peng;XU Kaixuan;ZHANG Yufeng(School of Astronautics,Harbin Institute of Technology,Harbin 150001,P.R.China;United Microelectronics Center Co.,Ltd.(CUMEC),Chongqing 401332,P.R.China)

机构地区：[1]哈尔滨工业大学航天学院,哈尔滨150001 [2]联合微电子中心有限责任公司,重庆401332

出　　处：《微电子学》2022年第4期681-688,共8页Microelectronics

基　　金：国家自然科学基金资助项目(62004051)。

摘　　要：为了提高光伏电池的收集效率和环境适应性,提出了一种带有MPPT功能的高效率光伏电池升压转换器芯片。该电路系统包括新型四相高效电荷泵模块、扰动观察法MPPT控制电路模块、反馈控制模块、纳安级电流基准、检测电路模块等。该芯片采用0.35μm BCD工艺设计、仿真并流片。芯片尺寸为3.15 mm×2.43 mm。测试结果表明,当光伏电池输出电压大于0.5 V时,升压转换器芯片输出电压提升到3V,电压转换效率可达99.4%。MPPT算法使输出功率提升8.53%。当输出负载电流为297μA时,最宽输出PCE达到85.1%。该芯片实现了高效升压光伏电池输出电压的目标。To improve the collection efficiency and environmental adaptability of PV cell,a high efficiency boost converter chip with MPPT function for PV cell was proposed.This circuit system included a new type of four-phase high efficiency charge pump module,an MPPT control circuit module which utilized a disturbance observation method,a feedback control module,a nA level current reference,and a detection circuit module.The chip was designed,simulated and manufactured in a 0.35μm BCD process.The chip size was 3.15 mm×2.43 mm.The test results showed that when the PV cell output voltage was more than 0.5 V,the output voltage of the converter was raised to 3V,and the voltage conversion efficiency could reach 99.4%.The MPPT algorithm made the output power improve by 8.53%.When the output load current was 297μA,the widest output PCE achieved 85.1%.The chip was highly efficient in boosting the output voltage of PV cells.

关 键 词：升压转换器 电荷泵 最大功率点追踪 光伏能量收集 

分 类 号：TN86[电子电信—信息与通信工程]