利用Matlab Simulink对PWM/PFM控制的SMPS进行对比分析

2017 Fourth International Conference on Signal Processing, Communication and Networking (ICSCN) Pub Date : 2017-03-01 DOI:10.1109/ICSCN.2017.8085657

S. V. vasantha Rani, R. Thangam

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引用次数: 2

摘要

本文阐述了SMPS的PWM/PFM控制器的设计。给出了一个应用逻辑控制器进行管理的实例。这里使用的控制器是脉冲频率调制(PFM)和脉冲宽度调制(PWM)。一般来说，对于轻负载，脉宽调制降压变换器工作效率高，开关损耗小，对于重负载，脉冲调频降压变换器工作损耗小。本文考虑了脉冲调频降压变换器的不连续导通方式在连接电压不稳定的电源和需要恒压的负载的应用中的一致性。在这里，脉冲被应用到半导体MOSFET控制的降压变换器中，根据变换器的负载和输出电压的阈值，在某个点结束并在某个点释放。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Comparative analysis of PWM/PFM controlled SMPS using Matlab Simulink

The design of PWM/PFM controller for SMPS is explained in this paper. An application concerning logic controller to manage is given. controller used here is Pulse frequency modulation (PFM)and pulse width modulation(PWM). In general for light load pulse width modulated buck converter operates with high efficiency since it has less switching losses, for heavy load operation pulse frequency modulation buck converter operates with less losses. Discontinuous conduction mode of pulse frequency modulated buck converter is considered in this paper for its concert in an application connecting a source with unstable voltage conditions with a load which requires constant voltage. Here, the pulses are apply to the semiconductor MOSFET control in step down converter is ended at some point and released at some point depending upon the load and threshold values of output voltage of the converter.

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2017 Fourth International Conference on Signal Processing, Communication and Networking (ICSCN)

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