A 300mA 14mV-Ripple Digitally Controlled Buck Converter Using Frequency Domain ΔΣ ADC and Hybrid PWM Generator 6415 =  ORJ

📋 论文概要

该论文提出了一种采用频域ΔΣ ADC和混合PWM发生器的数字控制降压转换器，实现了300mA负载电流下14mV的纹波。解决了数字控制器中ADC和DPWM模块的功耗、复杂度和面积挑战。

💡 主要创新点

• 提出频域ΔΣ ADC架构，降低ADC功耗和复杂度
• 设计混合PWM发生器，结合数字和模拟技术提高分辨率并减少面积

🏷 关键词

📄 原文摘要

Digitally controlled DC-DC converters enable design portability as well as reconfigurable compensation and control schemes. Digital controllers are also resistant to process and temperature variations making them attractive for SoC applications. The main building blocks of a digital controller for integrated switchmode converters are the feedback ADC that digitizes the error signal, the digital compensator, and the digital PWM generator (DPWM). The ADC and DPWM blocks are typically the most challenging circuits to design in terms of power consumption, complexity, and area. In this work a high-linearity frequency-domain ADC technique based on a single bit, first-order ΔΣ frequency discriminator without the need for an analog integrator is presented [1]. For the DPWM, a segmented scheme using a Type-I DLL for fine delay control followed by a counter-based coarse delay is presented. The reduced complexity of the feedback path and potential for higher speed and multiplexed operation of the

👥 作者与机构

Hani H Ahmad, Bertan Bakkaloglu

Arizona State University, Tempe, AZ