Article
Engineering, Electrical & Electronic
N. Sandeep, Jagabar Sathik Ali
Summary: This letter proposes an improved quadruple boosting nine-level (IQB9L) inverter with reduced component count and improved performance. The proposed inverter requires ten switches, three diodes, and two capacitors for 9 L operation, and ensures self-voltage balanced capacitors using the series-parallel technique for sensorless operation. The experimental results validate the feasibility of the proposed inverter topology.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Shengdao Ren, Chushan Li, Lin Zhu, Wuhua Li, Xiangning He, Wanyuan Qu
Summary: This article presents a power supply with a simple circuit structure for medium-voltage direct current (MVdc) systems. The power supply utilizes cascaded standardized submodules to cope with high-voltage input and reduce the isolation requirement, and ensures voltage balance of all dc-link capacitors with independently operating submodules.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Xinping Ding, Fenglian Wang, Mingzhu Zhou, Yichang Cao, Zhengyi Wei
Summary: This article proposes a high-voltage gain soft switching quasi-Z-source dc-dc converter that achieves high efficiency conversion, low input current ripple, and other advantages. The performance of the proposed converter is verified through experiments, which are found to be consistent with the theoretical analysis results.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Weihan Gao, Peng Gu, Dixian Zhao
Summary: This brief introduces a 5-bit switched-type attenuator (STA) that operates from DC to 87.8 GHz. The brief proposes a new II-type compensation method with a switched capacitor branch, which effectively reduces phase errors at high frequencies without compromising amplitude errors. The fabricated STA in 40-nm CMOS technology demonstrates a 15.5-dB attenuation range with a 0.5-dB tuning step.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Engineering, Electrical & Electronic
Huan Xi, Jiahui Chen, Chengjie Gu, Zhi Fang, Xinbo Ruan
Summary: The article introduces a switched-capacitor envelope tracking (ET) power supply that utilizes the PEID method to improve tracking bandwidth. By linking capacitors flexibly, more charging loops are created to achieve balanced voltage levels. Experimental results confirm the effectiveness of the proposed scheme.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Nghia Tang, Wookpyo Hong, Bai Nguyen, Zhiyuan Zhou, Jong-Hoon Kim, Deukhyoun Heo
Summary: Fully integrated voltage regulators can improve performance and reduce power consumption of system-on-chips through point-of-load voltage regulation. Low-quality and low-density on-chip inductors and capacitors are currently the main limiting factors for performance. A switched-inductor-capacitor voltage converter with compact on-chip air-cored metal-tracked inductors operates more efficiently than existing step-down voltage converters.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2021)
Article
Automation & Control Systems
Cassiano Rech, Wilmar A. P. Castiblanco
Summary: This article proposes a design of a three-phase five-level switched-capacitor active neutral point clamped converter, which is characterized by its voltage boost ability, low-voltage stress across semiconductor devices, and balance of floating capacitor voltage. The operating principles and modulation scheme of the converter are explained, and a comparative analysis with similar topologies is presented. Simulation and experimental results demonstrate the feasibility of the proposed five-level converter.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Hao Tian, Mingzhe Wu, Yun Wei Li
Summary: In this article, a precharging method for floating capacitors in seven-level hybrid clamped converters is proposed. By using specific switching states and selection schemes, the inrush current and voltage stress can be controlled without relying on dedicated power supplies, achieving safe precharging.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zhuyu Xun, Hongfa Ding, Zhou He, Wentao Zhou, Yue Zheng
Summary: A novel nine-level switched-capacitor multilevel inverter with reduced capacitance and balanced capacitor voltage is proposed in this article. It utilizes only two capacitors to boost the input voltage and achieve nine output voltage levels under different load conditions. The proposed inverter eliminates the capacitor voltage imbalance by charging or discharging the capacitors independently. The theoretical analysis, simulation, and experiment results validate the feasibility of the proposed inverter.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Jagabar Sathik Mohamed Ali, Dhafer J. J. Almakhles, Mahmoud F. F. Elmorshedy
Summary: This research article introduces a new single dc source high-boost 17-level switched capacitor inverter topology for photovoltaic applications. The proposed topology includes a continuous input current front-end dc/dc converter and a switched capacitor module for high voltage boosting. The mathematical expression for output voltage gain is derived, and various analyses such as soft-charging technique, power loss, and voltage gain are conducted. A detailed comparison is provided to demonstrate the superiority of the suggested topology over other topologies in terms of maximum blocking voltage, voltage gain, and components' count. A scaled-down prototype model is designed and achieves 94.5% efficiency for 520 W.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Huan Xi, Ning Liu, Yongjian Xu, Ying Zhu, Juan Cao, Xinbo Ruan
Summary: A switched capacitor based high bandwidth ET power supply is proposed in this research, which can stabilize voltages and replace isolated voltage sources, effectively improving system efficiency.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Energy & Fuels
Xiaobing Zhang, Guohua Zhou, Shuyi Liu
Summary: Due to high voltage stress, series parallel switched-capacitor (SPSC) equalizers have low reliability. To reduce the voltage stress, this paper proposes two switched-capacitor (SC) equalizers using hybrid balancing paths. Balancing paths among cells are used for energy transfer and balancing paths among substrings improve balancing speed. The proposed equalizers are decomposed into SC balancing units and graph networks for simplified analysis. A modularized method is also proposed for high voltage applications to further decrease voltage stress. Simulation and experimental results validate the proposed equalizers' effectiveness.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Chemistry, Analytical
Cheol-Woo Kang, Hyunwon Moon, Jong-Ryul Yang
Summary: A Voltage-Controlled Oscillator (VCO) is crucial for generating high-speed clocks and local oscillation signals in mixed-mode circuits and frequency conversion applications. To improve the performance of CMOS VCOs, minimizing the impact of flicker noise and implementing switched-biasing techniques can be effective strategies.
Article
Engineering, Electrical & Electronic
Ga-Eun Lee, Hyo-Jin Lee, Seong-Tae Han, Jong-Ryul Yang
Summary: A CMOS detector with a customized capacitor was proposed to enhance the detection performance of terahertz imaging systems, showing significant improvements in voltage responsivity simulation and correlation compared to detectors using a standard capacitor design.
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2021)
Article
Automation & Control Systems
Chaofan Cui, Yu Tang, Yingjun Guo, Hexu Sun, Lin Jiang
Summary: A novel high step-up SC/ASL converter is proposed in this article, with lower voltage stress and higher efficiency compared to other similar converters. The converter can achieve self-voltage balancing and its performance is verified through a series of analyses.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Stephen T. Kim, Yi-Chun Shih, Kaushik Mazumdar, Rinkle Jain, Joseph F. Ryan, Carlos Tokunaga, Charles Augustine, Jaydeep P. Kulkarni, Krishnan Ravichandran, James W. Tschanz, Muhammad M. Khellah, Vivek De
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2016)
Editorial Material
Computer Science, Hardware & Architecture
Krishnendu Chakrabarty
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
(2017)
Editorial Material
Computer Science, Hardware & Architecture
Jaydeep Kulkarni, Thomas F. Wenisch
IEEE DESIGN & TEST
(2018)
Editorial Material
Computer Science, Hardware & Architecture
Lizy Kurian John
Proceedings Paper
Computer Science, Artificial Intelligence
Rishabh Sehgal, Jaydeep P. Kulkarni
Summary: With the unprecedented growth in Deep Neural Networks (DNN) model size, researchers are exploring Compute-In-Memory (CIM) designs using Static Access Random Memory (SRAM) to perform DNN computations within memory arrays in order to mitigate latency and energy overheads. These designs can realize analog or digital domain multiply-and-accumulate (MAC) computations using modulated wordline and bitline voltages and pulse-widths. Key design trends and qualitative comparisons in recent CIM-SRAM designs utilizing analog and digitally-intensive approaches are presented in this paper.
2021 IEEE 3RD INTERNATIONAL CONFERENCE ON ARTIFICIAL INTELLIGENCE CIRCUITS AND SYSTEMS (AICAS)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Siddhartha Raman Sundara Raman, Shanshan Xie, Jaydeep P. Kulkarni
Summary: With the rapid growth in data intensive applications, the demand for energy efficient machine learning/AI hardware accelerators is increasing. IGZO transistors offer promising potential for enhancing CIM performance, supporting 8-bit inputs/activations and 8-bit signed weights. By utilizing 2-bit ADC for MLC weight bit read sensing, the representative neural network model achieved 80% Top-1 inference accuracy on the CIFAR-10 dataset.
2021 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)
(2021)
Article
Computer Science, Hardware & Architecture
Rahul Mathur, Ajay Krishna Ananda Kumar, Lizy John, Jaydeep P. Kulkarni
Summary: This study explores the design space of 3D systolic accelerators, proposing and evaluating various partitioned accelerator configurations. The results demonstrate that different partitioning methods can significantly reduce latency or energy consumption, and organizing the systolic array and SRAM tiers can limit temperature rises.
IEEE JOURNAL ON EXPLORATORY SOLID-STATE COMPUTATIONAL DEVICES AND CIRCUITS
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Shanshan Xie, Can Ni, Aseem Sayal, Pulkit Jain, Fatih Hamzaoglu, Jaydeep P. Kulkarni
2021 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE (ISSCC)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
R. Mathur, M. Bhargava, S. Salahuddin, P. Schuddinck, J. Ryckaert, S. Annamalai, A. Gupta, Y. K. Chong, S. Sinha, B. Cline, J. P. Kulkarni
2020 IEEE INTERNATIONAL ELECTRON DEVICES MEETING (IEDM)
(2020)
Proceedings Paper
Computer Science, Hardware & Architecture
J. P. Kulkarni, A. Malavasi, C. Augustine, C. Tokunaga, J. Tschanz, M. M. Khellah, V De
2020 IEEE SYMPOSIUM ON VLSI CIRCUITS
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Rahul Mathur, Chien-Ju Chao, Rossana Liu, Nikhil Tadepalli, Pranavi Chandupatla, Shawn Hung, Xiaoqing Xu, Saurabh Sinha, Jaydeep Kulkarni
2020 IEEE 70TH ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE (ECTC 2020)
(2020)
Article
Computer Science, Hardware & Architecture
Aseem Sayal, Paras Ajay, Mark W. McDermott, S. V. Sreenivasan, Jaydeep P. Kulkarni
IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
S. S. Teja Nibhanupudi, Jaydeep P. Kulkarni
2019 INTERNATIONAL SYMPOSIUM ON VLSI TECHNOLOGY, SYSTEMS AND APPLICATION (VLSI-TSA)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Aseem Sayal, Shirin Fathima, S. S. Teja Nibhanupudi, Jaydeep P. Kulkarni
2019 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE (ISSCC)
(2019)
Proceedings Paper
Computer Science, Artificial Intelligence
Subrahmanya Teja, Jaydeep P. Kulkarni
2018 55TH ACM/ESDA/IEEE DESIGN AUTOMATION CONFERENCE (DAC)
(2018)
