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2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)最新文献

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Design of an LLC Resonant DC-DC Converter with MOSFET-Based Active Rectifier 基于mosfet有源整流器的LLC谐振DC-DC变换器的设计
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816808
A. Liotta, G. Frattini, P. Giannelli, E. Bonizzoni, P. Malcovati
This paper presents an LLC resonant DC-DC converter suitable for low voltage applications. The circuit, designed and simulated in a standard 180-nm BCD process, employs a MOSFET-based active rectifier in order to minimize conduction losses, thus increasing the efficiency at heavy load. The circuit operates with an input voltage of 5 V (±10%), an output voltage of 12 V, and provides to the output a maximum power of 2 W. Transistor level simulation results show an efficiency of 84% at full output power.
本文提出了一种适用于低压应用的LLC谐振DC-DC变换器。该电路采用标准的180nm BCD工艺设计和仿真,采用基于mosfet的有源整流器,以最小化导通损耗,从而提高重负载下的效率。电路的输入电压为5v(±10%),输出电压为12v,最大输出功率为2w。晶体管级仿真结果表明,在全输出功率下效率为84%。
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引用次数: 0
Architectural Implications for Inference of Graph Neural Networks on CGRA-based Accelerators 基于cgra的加速器上图神经网络推理的体系结构含义
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816810
Luca Zulberti, Matteo Monopoli, P. Nannipieri, L. Fanucci
Reconfigurable computing has become very popular in recent years. Among all available architectures, Coarse-Grained Reconfigurable Arrays are the most prominent ones. They permit to efficiently accelerate several classes of data-intensive algorithms without giving up architecture versatility, and their use in machine learning applications is becoming increasingly widespread. In particular, the typical workload of Convolutional Neural Networks fits very well on this kind of architecture. Unfortunately, their use in Graph Neural Networks is not well investigated. Graph Neural Network algorithms apply to use cases that are characterized by non-euclidean data, such as computer vision, natural language processing, traffic forecasting, chemistry, and recommendation systems. In this work, we analyse the most relevant Coarse-Grained Reconfigurable Array devices and Graph Neural Network models. Our contribution includes a comparison between the hardware architectures and their use for the inference of Graph Neural Network models. We highlight their limitations and discuss possible directions that the development of these architectures could take.
近年来,可重构计算变得非常流行。在所有可用的体系结构中,粗粒度可重构阵列是最突出的一种。它们允许在不放弃架构通用性的情况下有效地加速几类数据密集型算法,并且它们在机器学习应用中的应用正变得越来越广泛。特别是卷积神经网络的典型工作负载非常适合这种架构。不幸的是,它们在图神经网络中的应用并没有得到很好的研究。图神经网络算法适用于以非欧几里得数据为特征的用例,例如计算机视觉、自然语言处理、流量预测、化学和推荐系统。在这项工作中,我们分析了最相关的粗粒度可重构阵列设备和图神经网络模型。我们的贡献包括硬件架构及其用于图神经网络模型推理的比较。我们强调了它们的局限性,并讨论了这些体系结构的开发可能采取的方向。
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引用次数: 1
A novel fully digital particle detector with high spatial resolution 一种新型的高空间分辨率全数字粒子探测器
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816828
Matthiew Franks, N. Massari, L. Parmesan, G. Casse
In the presented paper we describe an innovative pixel topology designed for particle tracking. The proposed approach is based on a fully digital concept. When ionising particles traverse detector material, charges collected by the pixel are converted to a single bit to obtain a binary image. This digital approach allows a simplified pixel schematic to be used, reducing the pixel size to 2.5 μm × 2.5 μm and optimises the power consumption and the speed of the readout. An array of 256×256 pixels have been fabricated in a 65 nm standard CMOS technology as a proof of concept. Preliminary results on pixel performance are reported, demonstrating the potential of the approach.
在本文中,我们描述了一种用于粒子跟踪的创新像素拓扑。所提出的方法是基于一个完全数字化的概念。当电离粒子穿过探测器材料时,由像素收集的电荷被转换为单个比特以获得二值图像。这种数字方法允许使用简化的像素原理图,将像素尺寸减小到2.5 μm × 2.5 μm,并优化功耗和读出速度。在65纳米标准CMOS技术中制造了256×256像素阵列作为概念验证。报告了像素性能的初步结果,证明了该方法的潜力。
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引用次数: 0
Heterogeneous FPGA-based System for Real-Time Drowsiness Detection 基于异构fpga的困倦实时检测系统
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816816
A. Migali, F. Spagnolo, P. Corsonello
Drowsiness detection is a key feature in modern Advanced Driver Assistance Systems (ADAS). State-of-the-art approaches rely on machine learning techniques and neural networks to monitor unusual movements of the head and eyes activities. Unfortunately, due to their computationally intensive operations, integrating such algorithms in real-time and low-power operating scenarios, like auto-motive applications, is still quite challenging. This paper proposes an efficient hardware architecture for real-time drowsiness detection based on monitoring the driver’s eye blinking behaviour through the PERcentage of eye CLOSure (PERCLOS) metric. Experimental results obtained on the Xilinx Zynq XC7Z020 FPGA SoC show that the proposed system is up to 33.3 times faster and 2.6 times less area consuming than state-of-the-art competitors.
睡意检测是现代高级驾驶辅助系统(ADAS)的一个关键功能。最先进的方法依赖于机器学习技术和神经网络来监测头部和眼睛活动的异常运动。不幸的是,由于它们的计算密集型操作,将这些算法集成到实时和低功耗的操作场景中,如汽车应用,仍然是相当具有挑战性的。本文提出了一种基于闭眼百分比(PERCLOS)指标监测驾驶员眨眼行为的实时睡意检测硬件架构。在Xilinx Zynq XC7Z020 FPGA SoC上获得的实验结果表明,所提出的系统比最先进的竞争对手快33.3倍,占地面积少2.6倍。
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引用次数: 0
Design Methodology of the Output Power Stage of a Step-Down DC-DC Converter 降压DC-DC变换器输出功率级的设计方法
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816759
Angelo Lucio Bella, G. Giustolisi, M. L. Rosa, G. Sicurella
In this work, a design methodology of a step-down (buck) DC-DC converter is presented focusing on the output power stage. The target system is a synchronous buck converter for general purpose applications, which works in a wide range of input and output voltages. The analysis has been focused on the power conversion efficiency that represents one of the major features of this device. Its efficiency is strictly related to the power MOS losses, both conduction and switching ones. The design methodology has been organized into three steps: the first one is the characterization of the power MOS parasites (both resistive and capacitive) with particular attention to temperature and gate driving voltage; in the second step, the power losses are evaluated according to parasitic at different temperature and driving condition of the power MOS; in the last step, the theoretical calculation is verified with the simulation. In particular, the technology used in this work is a 0.16 $mu mathrm{m}$ Advanced BCD Technology and the simulation environment used is the Cadence Virtuoso suite.
在这项工作中,提出了一种降压(降压)DC-DC转换器的设计方法,重点是输出功率级。目标系统是用于通用应用的同步降压变换器,它工作在宽范围的输入和输出电压下。分析的重点是功率转换效率,这是该器件的主要特征之一。其效率与MOS的功率损耗密切相关,包括导通损耗和开关损耗。设计方法分为三个步骤:第一步是表征功率MOS寄生体(电阻和电容),特别注意温度和栅极驱动电压;第二步,根据功率MOS在不同温度和驱动条件下的寄生特性计算功率损耗;最后通过仿真验证了理论计算的正确性。特别地,本作品中使用的技术是0.16 $mu maththrm {m}$ Advanced BCD technology,使用的仿真环境是Cadence Virtuoso套件。
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引用次数: 0
Profiling of CNNs using the MATLAB FPGA-based Deep Learning Processor 使用基于MATLAB fpga的深度学习处理器分析cnn
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816841
S. Spanò, L. Canese, G. Cardarilli
In this paper we assess the performance of the new MATLAB Deep Learning Processor. It is a hardware architecture meant for FPGA devices which is able to infer Convolutional Neural Networks. The system is deployed on a Xilinx ZCU102 SoC and we customize it with the aim to maximize its processing performance. We evaluate the hardware resources utilization, the maximum achievable clock frequency, and the power dissipation of the system. Our goal is to find the best performing networks on FPGA and, eventually, to compare the results with a GPU-based counterpart. We conduct an experimental campaign where the FPGA execution time of several CNNs is profiled and compared to the execution time on the NVIDIA Titan RTX GPU platform. This allows a comparative performance analysis when the same network is inferred on different systems. We consider all the available CNNs of the MATLAB suite which have been pretrained with the ImageNet dataset. Finally, to pinpoint the most cost-effective network, the FPGA prediction time is put in relation with the accuracy on the aforementioned dataset.
在本文中,我们评估了新的MATLAB深度学习处理器的性能。它是一种用于FPGA设备的硬件架构,能够推断卷积神经网络。该系统部署在赛灵思ZCU102 SoC上,我们对其进行了定制,旨在最大限度地提高其处理性能。我们评估了系统的硬件资源利用率、最大可实现时钟频率和功耗。我们的目标是在FPGA上找到性能最好的网络,并最终将结果与基于gpu的网络进行比较。我们进行了一个实验活动,其中几个cnn的FPGA执行时间进行了分析,并与NVIDIA Titan RTX GPU平台上的执行时间进行了比较。这允许在不同系统上推断相同的网络时进行比较性能分析。我们考虑用ImageNet数据集预训练的MATLAB套件中所有可用的cnn。最后,为了确定最具成本效益的网络,将FPGA预测时间与上述数据集的准确性联系起来。
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引用次数: 0
A Triode-Compensated CMOS Bandgap Core for Sub-250 mV Supply Voltages 一种用于低于250 mV电源电压的三极管补偿CMOS带隙磁芯
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816756
Francesco Gagliardi, Andrea Ria, G. Manfredini, M. Piotto, P. Bruschi
This paper presents a simple and original CMOS, sub-threshold bandgap voltage reference capable of operating with extremely reduced supply voltage values. The circuit capability is demonstrated by means of accurate electrical simulations performed on a prototype designed with a standard 0.18 $mu$m CMOS process. A reference voltage of 190 mV has been obtained with a minimum supply voltage of only 223 mV and a line regulation close to 8 mV/V.
本文提出了一种简单而新颖的CMOS,亚阈值带隙电压基准,能够在极低的电源电压值下工作。通过在采用标准0.18 $mu$m CMOS工艺设计的原型上进行精确的电模拟,证明了该电路的性能。参考电压为190 mV,最小电源电压仅为223 mV,线路稳压接近8 mV/V。
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引用次数: 1
A 0.63 pJ/bit Fully-Digital BPSK Demodulator for US-powered IMDs downlink in a 28-nm bulk CMOS technology 一种用于美国功率imd下行的0.63 pJ/bit全数字BPSK解调器,采用28纳米体CMOS技术
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816752
M. Privitera, A. Ballo, A. D. Grasso
Battery-less implantable medical devices (IMDs) are encountering an always growing interest in recent years. The ability to monitor body-organs activities using electrical stimulators requires the establishment of a Data Down-Link, while a Data Up-Link is an ubiquitous feature to monitor health conditions by acquiring biological signals. Under this scenario, this work deals with the design and the simulations of a Fully-Digital Binary Phase-Shift Keying (BPSK) demodulator for the Downlink in Ultrasound (US)-powered IMDs. The system presents low area occupation, ultra-low power consumption down to 1.25 $mu mathrm{W}$. It is implemented in a 28-nm bulk CMOS technology provided by TSMC. Its data rate rises up 2 Mbit/s and a minimum energy-per-bit equals to 0.63 pJ/bit.
近年来,无电池植入式医疗设备(imd)受到越来越多的关注。使用电刺激器监测身体器官活动的能力需要建立数据下行链路,而数据上行链路是通过获取生物信号来监测健康状况的普遍功能。在这种情况下,本工作涉及用于超声(US)供电imd下行链路的全数字二进制相移键控(BPSK)解调器的设计和仿真。该系统具有占地面积小,功耗低至1.25 $mu mathm {W}$的特点。它采用台积电提供的28纳米体CMOS技术实现。数据速率可达2mbit /s,每比特的最小能量为0.63 pJ/bit。
{"title":"A 0.63 pJ/bit Fully-Digital BPSK Demodulator for US-powered IMDs downlink in a 28-nm bulk CMOS technology","authors":"M. Privitera, A. Ballo, A. D. Grasso","doi":"10.1109/prime55000.2022.9816752","DOIUrl":"https://doi.org/10.1109/prime55000.2022.9816752","url":null,"abstract":"Battery-less implantable medical devices (IMDs) are encountering an always growing interest in recent years. The ability to monitor body-organs activities using electrical stimulators requires the establishment of a Data Down-Link, while a Data Up-Link is an ubiquitous feature to monitor health conditions by acquiring biological signals. Under this scenario, this work deals with the design and the simulations of a Fully-Digital Binary Phase-Shift Keying (BPSK) demodulator for the Downlink in Ultrasound (US)-powered IMDs. The system presents low area occupation, ultra-low power consumption down to 1.25 $mu mathrm{W}$. It is implemented in a 28-nm bulk CMOS technology provided by TSMC. Its data rate rises up 2 Mbit/s and a minimum energy-per-bit equals to 0.63 pJ/bit.","PeriodicalId":142196,"journal":{"name":"2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115727340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Design and Characterization of an Active Low-Pass Envelope Detector for Wake-Up Radio Receivers 一种用于唤醒无线电接收机的有源低通包络检测器的设计与特性
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816776
A. M. Elgani, Matteo D'Addato, Luca Perilli, E. Franchi, R. Canegallo
This paper presents a design flow for an active low-pass (LP) Envelope Detector (ED) for Wake-Up Radio (WUR) receivers and provides insight on the well-known bitrate-sensitivity-current trade-off and on additional aspects which may be critical in Internet of Things (IoT) applications, such as maximum receivable input power and robustness against Continuous Wave (CW) interferers. The implemented LP ED, designed using the STMicroelectronics 90-nm BCD technology, receives 400-bit OOK-modulated packets with an 868-MHz carrier frequency and achieves −35.5-dBm sensitivity with a 2.7-nW power consumption. Finally, it receives input power levels up to 15 dBm and achieves 22-dB Signal-to-Interference Ratio (SIR) with a CW interferer with a 100-kHz frequency offset.
本文介绍了用于唤醒无线电(WUR)接收器的有源低通(LP)包络检测器(ED)的设计流程,并提供了众所周知的比特率-灵敏度-电流权衡以及在物联网(IoT)应用中可能至关重要的其他方面的洞察,例如最大可接收输入功率和对连续波(CW)干扰的鲁棒性。实现的LP ED采用意法半导体90nm BCD技术设计,接收400位ook调制数据包,载波频率为868 mhz,灵敏度为- 35.5 dbm,功耗为2.7 nw。最后,它接收高达15 dBm的输入功率水平,并实现22db的信号干扰比(SIR),具有100 khz频率偏移的连续波干扰。
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引用次数: 0
Approximate Recursive Multipliers Using Carry Truncation and Error Compensation 使用进位截断和误差补偿的近似递归乘法器
Pub Date : 2022-06-12 DOI: 10.1109/prime55000.2022.9816787
I. Nunziata, Efstratios Zacharelos, Gerardo Saggese, A. Strollo, E. Napoli
Approximate computing is a fast-emerging paradigm promising higher circuit performances in error tolerant applications. Binary multipliers are a common target for approximate computing due to their complexity and the multitude of their applications. In this paper, we investigate approximate recursive multipliers based on novel 4x4 multiplier blocks. We present three approximate 4x4 multipliers, with different error-precision trade-off, obtained by carry truncation and error compensation. These basic blocks are exploited to design 8x8 approximate multipliers. The proposed circuits are implemented in a 14 nm FinFET technology and show improved performance compared to the state-of-the-art.
近似计算是一种快速兴起的模式,在容错应用中具有更高的电路性能。由于二进制乘法器的复杂性和大量的应用,它们是近似计算的常见目标。本文研究了基于新型4x4乘法器块的近似递归乘法器。通过进位截断和误差补偿,给出了三种误差精度权衡不同的近似4x4乘法器。利用这些基本块来设计8x8近似乘法器。所提出的电路在14nm FinFET技术中实现,与最先进的电路相比,性能有所提高。
{"title":"Approximate Recursive Multipliers Using Carry Truncation and Error Compensation","authors":"I. Nunziata, Efstratios Zacharelos, Gerardo Saggese, A. Strollo, E. Napoli","doi":"10.1109/prime55000.2022.9816787","DOIUrl":"https://doi.org/10.1109/prime55000.2022.9816787","url":null,"abstract":"Approximate computing is a fast-emerging paradigm promising higher circuit performances in error tolerant applications. Binary multipliers are a common target for approximate computing due to their complexity and the multitude of their applications. In this paper, we investigate approximate recursive multipliers based on novel 4x4 multiplier blocks. We present three approximate 4x4 multipliers, with different error-precision trade-off, obtained by carry truncation and error compensation. These basic blocks are exploited to design 8x8 approximate multipliers. The proposed circuits are implemented in a 14 nm FinFET technology and show improved performance compared to the state-of-the-art.","PeriodicalId":142196,"journal":{"name":"2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123747093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
期刊
2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)
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