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首页> 外文学位 >A Digital-PID-Control Single-Inductor Triple-Output (SITO) DC-DC Converter with Pre-Sub-Period Inductor-Current Regulation.
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A Digital-PID-Control Single-Inductor Triple-Output (SITO) DC-DC Converter with Pre-Sub-Period Inductor-Current Regulation.

机译：具有预分时段电感电流调节功能的数字PID控制单电感三路输出（SITO）DC-DC转换器。

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摘要

Multiple voltage supplies are necessary to satisfy the different voltage supply requirements of the different on-chip blocks to reduce power consumption in modern electronic devices, such as the modern embedded systems, the portable devices, personal computing devices and wireless communications and imaging systems. For example, WiMAX transmitter includes different sub-blocks: Baseband processor, IQ modulator and power amplifier. Different blocks should operate with the different power supply voltages to satisfy the different requirements.;Single-input multiple-output DC-DC converter is presented to provide the different voltage supplies and reduce the cost on the elements such as the inductor on PCB and save PCB area. Meanwhile, to remove cross regulation and improve load driving capability, the DC-DC converter should operate in the pseudo-continuous mode/discontinuous mode (P-CCM/DCM). However, in the previous designs, the DC current in the inductor is fixed. When the load becomes heavy enough, cross regulation will significantly affect across the different sub-converters.;In this thesis, a digital-PID-control single-inductor triple-output (SITO) DC-DC converter is realized in AMS 0.35mum CMOS technology. The size of the chip is about 1600 mum x 1700 mum. To improve load current and reduce cross regulation, a Pre-Sub-Period inductor-current regulation is proposed. Based on the maximum duty cycle limiter, an adaptive inductor current adjustment is realized when the duty cycle of the digital PWM signal is larger than the set maximum duty cycle. By an optimized phase control sequence, the S&H stages of the feedback switching and ADC are controlled to on/off with a minimized delay time. Moreover, the control sequence can virtually remove the setting time.
机译：为了满足不同的片上块的不同的电压供应要求，以减少现代电子设备（例如，现代的嵌入式系统，便携式设备，个人计算设备以及无线通信和成像系统）的功耗，必须使用多个电源。例如，WiMAX发送器包括不同的子块：基带处理器，IQ调制器和功率放大器。不同的模块应在不同的电源电压下工作，以满足不同的要求。提出了单输入多输出DC-DC转换器，以提供不同的电压源并降低PCB等电感器等元件的成本并节省成本PCB面积。同时，为了消除交叉调节并提高负载驱动能力，DC-DC转换器应以伪连续模式/非连续模式（P-CCM / DCM）运行。但是，在先前的设计中，电感器中的直流电流是固定的。当负载变得足够重时，交叉调节将对不同的子转换器产生重大影响。;本文中，在AMS0.35μmCMOS中实现了数字PID控制单电感三输出（SITO）DC-DC转换器技术。芯片的尺寸约为1600 x 1700。为了改善负载电流并减少交叉调节，提出了预亚周期电感器电流调节。基于最大占空比限制器，当数字PWM信号的占空比大于设置的最大占空比时，可实现自适应电感器电流调整。通过优化的相位控制序列，以最小的延迟时间将反馈开关和ADC的S＆H级控制为开/关。此外，控制顺序实际上可以消除设置时间。

著录项

  • 作者

    Jia, Jingbin.;

  • 作者单位

    The Chinese University of Hong Kong (Hong Kong).;

  • 授予单位 The Chinese University of Hong Kong (Hong Kong).;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 124 p.
  • 总页数 124
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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