基于PWM调制的宽输入直流升压电路  

DC Converter Circuit for a Continuous Direct Current Input Based on PMW Self-modulation

作　　者：李德川[1] 张敏 张永兴[1] Li Dechuan,Zhang Min,Zhang Yongxing(School of Physics and Electronic Information, Huaibei Normal University, Huaibei,Anhui 235000,Chin)

机构地区：[1]淮北师范大学物理与电子信息学院,安徽淮北235000

出　　处：《黑龙江工业学院学报（综合版）》2018年第4期46-49,共4页Journal of Heilongjiang University of Technology(Comprehensive Edition)

基　　金：安徽省自然科学基金项目(编号:1708085ME96)

摘　　要：设计了一种基于PWM自主调制的宽输入DC-DC升压转换电路,可以把一定范围内的输入电压转化为一个稳定的直流电压。该电路通过控制转换器中电路的闭合时间来控制相应的占空比,调节输入电压和输出电压之间的比例关系,具有一定的跟踪和自主调节能力。测试结果表明该电路通过自动反馈可以把1.5~4V范围内的电压转化为5V的直流稳压输出,且无需使用直流储能环节与锁相环。该设计比传统的升压转换器有更好的动态响应、自动补偿和实用稳态性。A wide input DC-DC converter circuit based on PWM self-modulation is designed. A range of a continuous direct current can be converted into a stable voltage value. The input voltage was modulated to a constant value by controlling the duty ratio in the opening and closing of the circuit. The circuit also has an ability of tracking and self-regulation. The results show that the circuit can convert the voltage of 1. 5 ~ 4 V to 5 V DC regulated output,without using DC energy storage and phase locked loop. The design has better dynamic response,automatic compensation and steady state than the conventional boost converter.

关 键 词：PWM调制 积分比较器 DC-DC升压器 

分 类 号：TM425[电气工程—电器]