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Automatic modeling of PWM DC-DC converters

机译：PWM DC-DC转换器的自动建模

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摘要

Different small-signal models are available for describing the dynamics of pulse width modulators (PWM) dc-to-dc converters. Discrete time models reach the best compliance in real life situations. Some converter control modes, in particular phase shifting, provide advantages of modeling in discrete time. On the other hand, the burden of getting such exact models is often tedious. Currently, automatic tools are available that are able to provide the state-space model in discrete time of any PWM dc-dc converter switching at constant frequency. The authors claim that the use of these tools is advisable for the analysis and control optimization of switching power supplies. To support their opinion, this letter refers to a new, very accurate small-signal model of a phase-shifting converter which has been published recently. Its excellent performance, as well as the difficulties of the derivation procedure, are compared with the precise forecasts and the short processing time of an automatic modeling tool. The paper concludes in favor of automatic modeling.
机译：可使用不同的小信号模型来描述脉宽调制器（PWM）DC-DC转换器的动态特性。离散时间模型可以在现实生活中达到最佳合规性。一些转换器控制模式，尤其是相移，提供了离散时间建模的优势。另一方面，获得这种精确模型的负担通常很繁琐。当前，有可用的自动工具能够以恒定频率在任何PWM DC-DC转换器的离散时间内提供状态空间模型。作者声称，建议将这些工具用于开关电源的分析和控制优化。为了支持他们的意见，这封信指的是最近已经发布的一种新的，非常精确的移相转换器小信号模型。将其出色的性能以及派生过程的困难与自动建模工具的准确预测和短处理时间进行了比较。本文的结论是赞成自动建模。

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