Many commercial controller implementations for dc-dc converters are based on pulse-width modulation (PWM) and small-signal analysis. Increasing switching frequencies, linked in part to wide bandgap devices, provide the opportunity to increase operating bandwidth and enhance performance. Fast processors and digital signal processing offer new computational techniques for power converter control. Conventional control techniques rarely make full use of operating capability. The objectives of this paper are to present an overview and link to literature on conventional modulation and control techniques for hard-switched dc-dc converters, identify performance limits associated with conventional small-signal-based design, discuss geometric control approaches, and compare strategies for control tuning. The discussion shows how current mode controls have alternative state feedback implementations, and describes unusual opportunities for large-signal control tuning. Considerations for minimum response time are described. Comparisons among tuning methods illustrate how geometric controls can achieve order of magnitude dynamic performance increases. The paper is intended as a baseline tutorial reference for future work on power converter control.

中文翻译：

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基于小信号和大信号方法的高性能DC-DC转换器的调制，控制和调整的教程和复习讨论

DC-DC转换器的许多商用控制器实现都是基于脉宽调制（PWM）和小信号分析的。增加的开关频率（部分链接到宽带隙设备）提供了增加工作带宽和增强性能的机会。快速处理器和数字信号处理为功率转换器控制提供了新的计算技术。传统的控制技术很少充分利用操作能力。本文的目的是概述和链接有关硬开关DC-DC转换器的常规调制和控制技术的文献，确定与基于常规小信号的设计相关的性能极限，讨论几何控制方法并比较策略用于控制调整。讨论显示了当前模式控件如何具有替代状态​​反馈实现，并描述了大信号控件调整的不寻常机会。描述了最小响应时间的注意事项。调整方法之间的比较说明了几何控制如何实现动态性能提升的数量级。本文旨在作为电源转换器控制未来工作的基础教程参考。