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Integrated switching DC-DC converters with hybrid control schemes.

机译：具有混合控制方案的集成开关DC-DC转换器。

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摘要

In the modern world of technology, highly sophisticated electronic systems such as multiprocessor modules and system-on-chips (SoCs) pave the way for future's information technology breakthroughs. However, rapid growth on complexity and functions in such systems has also been a harbinger for the power increase, which tends to severely limit system miniaturization, efficiency, reliability and lifetime. Power management techniques have thus been introduced to mitigate this urgent power crisis. Switching power converters are considered to be the best candidate due to their high efficiency and voltage conversion flexibility. Moreover, switching power converter systems are highly nonlinear, discontinuous in time, and variable. This makes it viable over a wide operating range, under various load and line disturbances. However, only one control scheme like pulse width modulation (PWM) cannot optimize the whole system in different scenarios. Hybrid control schemes are thus employed in the power converters to operate jointly and seamlessly for performance optimization during all operation periods of start-up, steady state and dynamic voltage/load transient state.;In this dissertation, three different switching power converter topologies, along with different hybrid control schemes are studied. First, an integrated switching buck converter with a dual-mode control scheme is proposed. A pulse-train (PT) control, employing a combination of four different pulse control patterns, is proposed to achieve optimal regulation performance under various operation scenarios. Meanwhile, a high-frequency pulse-width modulation (PWM) control is adopted to ensure low output ripples and avoid digital limit cycling in the steady state. Second, an integrated buck-boost converter with a tri-mode digital control is presented. It employs adaptive step-up/down voltage conversion to enable a wide range of output voltage. This is beneficial to ever-increasing dynamic voltage scaling (DVS) enabled, modern power-efficient VLSI systems. Dynamic voltage scaling ( DVS) is such a technology which adaptively adjusts the supply voltage and operation frequency according to instantaneous power and performance demand, such that a system is constantly operated at the lowest possible power level without compromising its performance. Third, a digital integrated single-inductor multiple-output (SIMO) converter, tailored for DVS-enabled multicore systems is addressed. With a multi-mode control algorithm, DVS tracking speed and line/load regulation are significantly improved, while the converter still retains low cross regulation.;All three integrated CMOS DC-DC converters have been designed and fabricated successfully, demonstrating the techniques proposed in this research. The measurements results illustrate superior line and load regulation performances and dynamic response in all these designs. The approaches presented in this dissertation are evidently viable for realizing compact and high efficient DC-DC converters.
机译：在现代技术世界中，高度复杂的电子系统（例如多处理器模块和片上系统（SoC））为未来的信息技术突破铺平了道路。然而，在这样的系统中，复杂性和功能的快速增长也已经成为功率增加的预兆，这倾向于严重限制系统的小型化，效率，可靠性和寿命。因此，已经引入了电源管理技术来缓解这种紧急电源危机。开关电源转换器具有高效率和电压转换灵活性，因此被认为是最佳选择。而且，开关功率转换器系统是高度非线性的，时间上不连续的并且是可变的。这使其在各种负载和线路干扰下的宽工作范围内都可行。但是，只有像脉冲宽度调制（PWM）这样的控制方案无法在不同情况下优化整个系统。因此，在功率转换器中采用了混合控制方案，以便在启动，稳态和动态电压/负载瞬态的所有工作期间共同无缝地进行操作，以优化性能。研究了具有不同混合控制方案的系统。首先，提出了一种具有双模式控制方案的集成开关降压转换器。提出了采用四个不同脉冲控制模式的组合的脉冲串（PT）控制，以在各种操作场景下实现最佳的调节性能。同时，采用高频脉宽调制（PWM）控制以确保低输出纹波并避免稳态下的数字极限循环。其次，提出了具有三模式数字控制的集成降压-升压转换器。它采用自适应升压/降压转换，以实现宽范围的输出电压。这对于不断增加启用动态电压缩放（DVS）的现代节能VLSI系统是有好处的。动态电压缩放（DVS）是一种技术，可根据瞬时功率和性能需求来自适应地调整电源电压和工作频率，从而使系统始终以最低的功率水平运行而不会影响其性能。第三，解决了为集成了DVS的多核系统量身定制的数字集成单电感多输出（SIMO）转换器。借助多模式控制算法，DVS跟踪速度和线路/负载调节率得到了显着提高，而转换器仍保持了较低的交叉调节率。；所有三个集成的CMOS DC-DC转换器均已成功设计和制造，证明了本文提出的技术。这项研究。测量结果说明了所有这些设计均具有出色的线路和负载调节性能以及动态响应。本文提出的方法显然对于实现紧凑，高效的DC-DC转换器是可行的。

著录项

  • 作者

    Luo, Feng.;

  • 作者单位

    The University of Arizona.;

  • 授予单位 The University of Arizona.;
  • 学科 Engineering Electronics and Electrical.;Engineering System Science.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 162 p.
  • 总页数 162
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;系统科学;
  • 关键词

  • 入库时间 2022-08-17 11:38:29

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