摘要
本文阐述了TI公司最新推出的数字信号处理器(DSP)TMS320F28335的EPWM(EnhancedPulse Width Modulator)模块中的死区(Dead-Band)模块的基本原理,重点介绍了死区模块中相应寄存器的含义及其配置方法,并给出了实验结果波形。与T I公司的数字信号处理器TMS320F2812相比,TMS320F281 2只能配置一个死区时间,而TMS320F28335可以实现对上升沿延迟和下降沿延迟不同的设置。因而,数字信号处理器TMS320F28335可以更为方便地配置死区时间,更好的满足功率器件对驱动信号的不同要求。
This paper describes the basic principle of the Dead-Band modulator included in the latest Digital Signal Processing TMS320F28335 which is launched by TI and especially introduce the meaning of the corresponding registers of the Dead-Band modulator and how to configure the corresponding registers. The experimental waveform is presented. Compared with the Digital Signal Processing TMS320F2812 which can configure only one Dead-Band time, TMS320F28335 can configure the Dead-Band Rising Edge Delay and Dead-Band Falling Edge Delay. Thus, TMS320F28335 may configure the Dead-Band time more convenient and drive signal can meet the requirements of power device.
出处
《变频器世界》
2009年第12期69-71,共3页
The World of Inverters
基金
北京市教委资助项目(KM200710009001)
