›› 2015, Vol. 28 ›› Issue (10): 166-.

• 论文 • 上一篇    下一篇

一种恒压输出的DC-DC升压电路设计

董清臣,范铭   

  1. (平顶山工业职业技术学院 自动化与信息工程学院,河南 平顶山 467001)
  • 出版日期:2015-10-15 发布日期:2015-10-29
  • 作者简介:范铭(1985—),男,助教。研究方向:数字电子技术,信号系统。E-mail:sasmike@126.com

Design of a Constant Output Voltage DC-DC Boost Circuit

DONG Qingchen,FAN Ming   

  1. (School of Automation and Information Engineering,Pingdingshan Industrial Vocational and Technical College,Pingdingshan 467001,China)
  • Online:2015-10-15 Published:2015-10-29

摘要: 针对DC-DC升压器存在效率低,纹波电压较大,输出电压不稳定等问题,文中开发和设计了一种具有恒定输出电压的DC-DC升压转换器的方法。通过升压电路和电压反馈技术,将波动的输入电压变成恒定的直流电压输出。该设计通过将转换器的输出电压与参考电压相比较,两者的差值会产生一个PWM信号控制升压器的通断时间,从而达到恒定电压输出。仿真结果显示,该实验电路能在频率为20 kHz的连续导通模式中工作,产生24 V的恒定输出电压,输出功率为100 W。

关键词: DC-DC, 升压器, 太阳能系统, 恒压输出, PWM

Abstract: A DC-DC boost converter with constant output voltage is designed to solve such drawbacks of common DC-DC boost converter as low efficiency,excessive ripple voltage and output voltage instability.The fluctuating input voltage is changed to constant DC voltage output by using the boosting circuit and the voltage feedback technique.Comparing the converter output voltage with the reference voltage,the differential of the compared value generates a PWM signal to control the switch time,thus achieving a constant voltage output.The simulation results show that the designed circuit could produce a constant output voltage of 24 V,an output power of 100 W,and a switching frequency of 20 kHz in continuous conduction mode.

Key words: DC-DC;boost converter;solar system;constant output voltage;PWM

中图分类号: 

  • TN624