摘要
本文针对一种新型的DC/DC变换器拓扑结构,采用电流控制型脉宽调制芯片TL494构成了变换器的控制电路。TL494芯片功能强,工作频率高,通过外扩简单的硬件电路即可实现输出电压电流的双闭环控制。实验结果表明,该系统效率高,动态性能较好。
This paper utilizes the pulse width modulation chip of TL494 to construct the control circuit of DC/DC converter based on a new type of DC/DC converter topology. The chip of TL494 functions very strong, and its operation frequency is high. The double closed loop control of output voltage and current is realized by integrating some simple hardware circuit. The experiment results show that the efficiency is high and the dynamic performance is better.
出处
《电气技术》
2006年第5期45-48,共4页
Electrical Engineering
关键词
拓扑结构
脉宽调制
双闭环控制
topology structure
pulse width modulation
double closed loop control
