摘要
随着处理器技术的发展,对电压调节模块提出了更高的要求,其主拓扑和控制方式也有了很大发展。交错技术能够以较低的开关频率实现高频输出电压波动,具有纹波互消、相间分流等优点;而电压模式滞环控制具有电路简单、无需反馈环路补偿、负载瞬态响应以及不限制开关导通时间等优点,因此二者的结合使用将成为一种发展趋势。提出了一种新型电压滞环控制方式,并对其工作原理进行了分析,最后通过仿真和实验验证了该方式的优越性。
With the development of microprocessors,voltage regulator modules （VRMs） are required to have many strict and challenging specifications.Its main topology and control scheme must follow the fast-developing trend.The interleaving technique has several advantages such as the high frequency output voltage ripple with lower switching frequency,ripple cancellation,current division （sharing） between the phases.On the other hand,the voltage-mode hystcretic control has ninny advantages over many other control techniques that include simplicity,no feedback loop compensation is needed, near instantaneous response to toad transients,and no limitations on the switches on time.In view of these advantages,it is clear that combining the voltage-mode hysteretic control technique with the interleaving technique will result in a VRM which has the advantages of both techniques.A novel voltage-mode hysteretic control scheme is proposed and its working principle is analyzed.Finally, the advantages of the novel control scheme are proved by Pspice simulation and experiments.
出处
《电力电子技术》
CSCD
北大核心
2008年第6期78-80,共3页
Power Electronics
关键词
转换器:控制/交错技术
纹波互消
converter
control / interleaving technique
ripple cancellation
