A Wide Range Duty-Cycle PWM Generator Using Oxide-TFTs on a Flexible Substrate

IF 1.6 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Circuit Theory and Applications Pub Date : 2024-12-08 DOI:10.1002/cta.4390

Suyash Shrivastava, Pydi Ganga Bahubalindruni, Nishtha Wadhwa, Pedro Barquinha

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引用次数: 0

Abstract

This work presents an experimental characterization of a novel clocked regenerative comparator with oxide TFT (a-IGZO) technology on a flexible substrate. The circuit functionality is demonstrated as a wide range duty-cycle PWM signal generator with a triangular input signal. The regenerative latch in the comparator is implemented with diode-load–based inverters. The proposed circuit has shown a linear variation in the duty-cycle from 12% to 84%, when the reference voltage ( $V_{r e f}$ ) is varied from 0.5 to 3.3 V, respectively, in the clocked comparator. Further, a reliable operation is observed up to an input signal frequency of 2 kHz at a supply voltage of 4 V, with a power dissipation of 20 $μ$ W. This circuit would find potential applications in wearable bio-medical and neuromorphic computational systems.

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在柔性衬底上使用氧化tft的宽范围占空比PWM发生器

这项工作提出了一种新的时钟再生比较器的实验表征与氧化物TFT （a- igzo）技术在柔性衬底上。电路的功能被证明是一个宽范围占空比PWM信号发生器与一个三角形输入信号。比较器中的再生锁存器由基于二极管负载的逆变器实现。当参考电压（V ref）在时钟比较器中分别从0.5到3.3 V变化时，所提出的电路显示出占空比从12%到84%的线性变化。此外，在输入信号频率为2 kHz、电源电压为4 V、功耗为20 μ w时，该电路可以可靠地工作。该电路将在可穿戴生物医学和神经形态计算系统中找到潜在的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Circuit Theory and Applications 工程技术-工程：电子与电气

CiteScore

3.60

自引率

34.80%

发文量

277

审稿时长

4.5 months

期刊介绍： The scope of the Journal comprises all aspects of the theory and design of analog and digital circuits together with the application of the ideas and techniques of circuit theory in other fields of science and engineering. Examples of the areas covered include: Fundamental Circuit Theory together with its mathematical and computational aspects; Circuit modeling of devices; Synthesis and design of filters and active circuits; Neural networks; Nonlinear and chaotic circuits; Signal processing and VLSI; Distributed, switched and digital circuits; Power electronics; Solid state devices. Contributions to CAD and simulation are welcome.