›› 2014, Vol. 27 ›› Issue (8): 135-.

• 论文 • 上一篇    下一篇

数字控制PWM/PFM混合型AC-DC开关电源设计

张钦阳,杨潺,罗庆峰,管劲舟   

  1. (西安电子科技大学 电路CAD研究所,陕西 西安 710071)
  • 出版日期:2014-08-15 发布日期:2014-07-21
  • 作者简介:张钦阳(1989—),男,硕士研究生。研究方向:数模混合IC设计,模拟IC设计。E-mail:zhangqinyang4305@126.com

A PWM/PFM AC-DC Switching Power Supply with Digital Control

ZHANG Qinyang,YANG Chan,LUO Qingfeng,GUAN Jinzhou   

  1. (Institute of Electronic CAD,Xidian University,Xi'an 710071,China)
  • Online:2014-08-15 Published:2014-07-21

摘要:

采用数字控制方法,结合脉冲频率调制和脉冲宽度调制的特点,设计了一种采用数字控制初级反馈反激式开关电源。数字化控制技术可实现快速动态响应,严格的输出调节,以及多种PWM/PFM混合控制。最终利用Cyclone 3系列FPGA作为数字控制器进行恒压验证,其结果达到了预期设计要求。

关键词: 反激式, 初级反馈, 数字控制, PWM/PFM

Abstract:

A novel digital control using primary feedback flyback switching power supply is designed by digital control methods,combined with a pulse frequency modulation (PFM) and pulse width modulation (PWM) features.The novel digital control technology can achieve fast dynamic response,tight output regulation,as well as a variety of PWM/PFM hybrid control.Cyclone 3 Series FPGA is used as a digital controller to verify the results,which achieve the desired design requirements.

Key words: flyback;primary-side feedback;digital control;PWM/PFM

中图分类号: 

  • TN86