基于CPLD的高效冷光源驱动器的设计  

Design of high efficient cold light source based on CPLD

作　　者：栗红霞[1] 庞保堂[1] 

机构地区：[1]黄河科技学院,河南郑州450063

出　　处：《电源技术》2013年第8期1414-1416,共3页Chinese Journal of Power Sources

基　　金：河南省教育厅自然科学研究项目(2011C510013);郑州市光电信息技术及应用重点实验室项目(114PYFZX505)

摘　　要：利用PIC16F单片机和CPLD技术产生SPWM信号,该信号是一个等幅不等宽的高频脉冲。该SPWM信号经过半桥电路,然后再经过体积小、质量轻的LC滤波器后得到一个850 Hz、110 V的低频大功率信号,以驱动发光布冷光源工作。通过调整半桥电路的输入电平和负载参数使半桥电路工作在能充分导通和截止的工作状态,设计的驱动器工作效率较高,接近90%。The SPWM signal was produced by PIC16F single-chip microcomputer and CPLD technologies, which was a signal with unequal width and equal range. First, the SPWM signal passed half bridge circuit and then filtered by a small volume, light weight LC filter; finally, a low frequency signal of 850 Hz and 110 V was received to drive the light cloth cold light source. By adjusting the input level and load parameters of the half bridge circuit, the half bridge circuit could work on a full on- state and off-state. The designed drive circuit has a high efficiency of nearly 90%.

关 键 词：高效 发光布 有源功率因数校正 PWM 

分 类 号：TM384[电气工程—电机]