一种用于汽车DC-DC降压变换器的异步数字滞回控制器

2022 International Semiconductor Conference (CAS) Pub Date : 2022-10-12 DOI:10.1109/CAS56377.2022.9934161

Florin-Silviu Dumitru, B. Dimitriu, I. Câmpanu, G. Brezeanu

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引用次数: 1

摘要

本文介绍了用异步有限状态机(AFSM)作为汽车用电压型DC-DC BUCK变换器控制器的分析和实现细节。利用预硅仿真结果分析了Buck变换器的性能。通过与其他实现的比较，突出了最值得注意的方面/参数。该系统的反应时间为$\approx 180 ns$，沉降时间小于$1\mu s$，输出纹波随温度和工艺变化为$\pm 27\%$。波纹与$Vo\ DC$水平相当恒定，带来0.33% to 1.3% variation from 5V to 1.2V. The new controller concept offers more flexibility in choosing the external passive components. The proposed circuit was implemented in an 130nm BCD automotive technology.

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An Asynchronous digital, Hysteretic Controller for an Automotive Application DC-DC Buck Converter

This paper presents the analysis and the implementation details of using an asynchronous finite state machine (AFSM) as a controller for a voltage mode DC-DC BUCK converter used in automotive applications. The performance of the proposed Buck converter was analyzed using pre-silicon simulation results. The most notable aspects/parameters are highlighted by comparison with other implementations. The system has $\approx 180 ns$ reaction time and less than $1\mu s$ settle time with a $\pm 27\%$ output ripple variation over temperature and process. The ripple is fairly constant with the $Vo\ DC$ level that brings a 0.33% to 1.3% variation from 5V to 1.2V. The new controller concept offers more flexibility in choosing the external passive components. The proposed circuit was implemented in an 130nm BCD automotive technology.

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2022 International Semiconductor Conference (CAS)

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