期刊论文

Design of All Digital Phase- Shift PWM Controller based on FPGA

中文

南华大学学报(自然科学版)

1673-0062

2009

23

1

56-60

10.19431/j.cnki.1673-0062.2009.01.015

基金项目：湖南教育厅科研基金资助项目（06C716）.

本校为第一机构

移相脉宽调制在大功率开关电源控制中有着广泛的应用.本文介绍了一种新型的基于FPGA的全数字化移相脉宽调制控制器,并使用VHDL语言和有限状态机法设计了控制器中DPWM、ADC等多个模块.最后通过一台500W/48V样机对设计的控制器进行可行性实验验证,结果表明该数字控制器能实现预订的功能以及零电压软开关,效率达到91%.此方法设计的移相脉宽调制器的特点是能实现开关电源控制的全数字化.

Phase- shift pulse width modulation （PWM） has a wide application in the control field of high power switching mode power supply （SMPS）. A novel all digital phase -shift PWM controller based on FPGA was proposed in the paper. Simultaneity, some modules of controller including DPWM and ADC were realized using VHDL and the meth- od of the finite state machine. To demonstrate the feasibility of this controller, a 500W/48V power supply prototype has been assembled and tested. Experimental results are shown the digital controller can achieve the ...