{"title":"A machine learning approach for choosing component level conditions for prognostics of AMS systems","authors":"Sayandeep Sanyal, Antara Ai, P. Dasgupta","doi":"10.1109/ISDCS.2018.8379641","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379641","url":null,"abstract":"Ageing of components is a predominant concern for the reliability of systems which are expected to be in use over a long period of time. Unlike digital circuits where ageing causes logical errors, the ageing of analog components is often manifested in terms of performance degradation. When analog components are used inside large integrated circuits, the performance degradation of individual components may not show up in the visible output. In this early position paper we propose a methodology for choosing the conditions to be monitored on-chip for the component to determine that it is no longer fit to work in the context of the overall function of the integrated circuit.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130676244","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}
{"title":"High gain DC-DC step-up converter with multilevel output voltage","authors":"Arnab Ghosh, S. Saran","doi":"10.1109/ISDCS.2018.8379657","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379657","url":null,"abstract":"In this paper a very high gain step up DC-DC converter of multilevel output voltage is proposed. Maximum voltage gain in conventional Boost converter like, switched inductor converter, cascaded Boost converter, switched capacitor converter etc. are limited due to extreme duty cycle (i.e. duty cycle near to unity). Operation at extreme duty cycle leads to, serious reverse recovery problem at the switches, high conduction losses, high electromagnetic interference etc. Isolated converter such as fly-back converter, push-pull converter, forward converter, bridge converters etc. overcomes the above issues, where basically a transformer or coupled inductor is used to Boost the voltage. But, inclusion of transformer or coupled inductor introduces voltage spike at the main switch and power loss due to leakage inductance. Recently, DC micro-grid gets major importance because of the significant increase in DC loads and demand of high quality power. These DC loads require different voltage levels based on their power ratings. Photo voltaic source (PV) is one of the prime source of energy in DC micro-grid. A very high voltage gain converter is the need for DC micro-grid because of low PV source voltage. In this regard, here a step up DC-DC converter topology is proposed, which possess a very high voltage gain characteristic. The proposed converter operates in continuous conduction mode.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125198906","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}
{"title":"Investigation of process induced stress in the channel of a SiGe embedded source/drain Ge-FinFET architecture","authors":"K. Sinha, S. Chattopadhyay, H. Rahaman","doi":"10.1109/ISDCS.2018.8379632","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379632","url":null,"abstract":"In this work, a Ge Fin channel Field Effect Transistor (FinFET) with Silicon-Germanium (SiGe) embedded source/drain region has been studied using Sentaurus Technology Computer Aided Design (TCAD) process and device simulator from Synopsys and the impact of SiGe stressor material induced channel stress on the device performance has been investigated thoroughly. It is found that the SiGe embedded source/drain regions induce tensile stress in the channel that helps to improve the n-channel device performance. The amount of induced channel stress has been found to depend on the relative dimensions of the gate, source/drain, and Fin channel regions. A significant improvement of channel stress and hence the device performance, in terms of drive current (Ion) and Ion/Ioff ratio, is observed for higher source/drain volume and thinner Fin width device structure due to the enhancement of electron mobility by the induced stress, indicating better performance of the transistor. Also, more than 3× drive current improvement compared to unstrained device has been achieved for 25% Ge content in the SiGe stressor material.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132717737","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}
{"title":"Selective molecular sieving by tailoring the etch hole dimensions of rGO in rGO-ZnO nanotubes based hybrid structure","authors":"I. Maity, D. Acharyya, P. Bhattacharyya","doi":"10.1109/ISDCS.2018.8379679","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379679","url":null,"abstract":"The present paper concerns the selectivity improvement of the gas sensor devices by incorporating the molecular sieving effect through tailoring the dimensions and numbers of etch holes in the reduced graphene oxide (rGO) layer of rGO-ZnO nanotubes based hybrid device structure. The etch holes on rGO layer act as an effective molecular sieve, where target vapor having larger molecular size can't penetrate through the etch holes. Thus, the numbers and dimensions of etch holes were tailored in rGO-ZnO NTs based hybrid structure by tuning the reduction temperature of rGO. Two types of binary hybrid devices viz. sample 1 (treated at 200°C temperature) and sample 2 (treated at 400°C temperature) were investigated. Consequently, for proof of concept, two different alcohols vapors (i.e. methanol and ethanol) having different molecular size, were used as a test species. The experimental results confirms that, for smaller etch hole dimensions, the nanoscale perforation of rGO excludes larger molecules but allows smaller molecules to pass through it and thus can act as a molecular sieve.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133137637","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}
A. Mukhopadhyay, S. Bhattacharya, T. Iizuka, T. Maiti, M. Miura-Mattausch, A. Gau, D. Navarro, H. Rahaman, A. Sengupta, S. Yoshitomi, H. Mattausch
{"title":"MOSFET optimization toward power efficient circuit design","authors":"A. Mukhopadhyay, S. Bhattacharya, T. Iizuka, T. Maiti, M. Miura-Mattausch, A. Gau, D. Navarro, H. Rahaman, A. Sengupta, S. Yoshitomi, H. Mattausch","doi":"10.1109/ISDCS.2018.8379642","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379642","url":null,"abstract":"The report focuses on an optimization scheme of advanced MOSFETs for designing power efficient circuits. For the purpose the physics-based compact model HiSIM2 is applied so that the relationship between device and circuit characteristics can be investigated properly. It is demonstrated that the short-channel effect, which is usually measured by the threshold-voltage shift compared to the long-channel MOSFET, provides the consistent measure as the short-channel effect on device performance degradation. However, the circuitry performances degradation such as the power loss cannot be predicted sufficiently by the short channel effect alone. It is demonstrated that the power efficient circuit design can be achieved by minimizing the additional leakage current caused by the short-channel contribution.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124873368","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}
{"title":"A new method for denoising ECG signal using sharp cut-off FIR filter","authors":"Subhabrata Roy, A. Chandra","doi":"10.1109/ISDCS.2018.8379647","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379647","url":null,"abstract":"An electrocardiogram (ECG) is a graphical interface that shows its implication for the diagnosis of various cardiac problems by recording the electrical activity of heart with respect to time. Being very sensitive, mostly the amplitude and time period of the ECG signal is corrupted by noises and artifacts during data acquisition, which make the signal analysis much tougher. In this paper, a linear phase, sharp cut-off FIR filter is adopted for removing such noise from the corrupted ECG signal. To make sense, filtered ECG signal is compared with the original one. In order to establish the efficiency of the proposed approach for denoising ECG signal, outcome is also compared with that of the existing ones by means of a number of parameters.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127111342","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}
{"title":"Comparison study on the basis of transient response between Voltage Mode Control (VMC) & Current Mode Control (CMC) of buck converter","authors":"Pratik Roy, K. Banerjee, Shilpi Saha","doi":"10.1109/ISDCS.2018.8379636","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379636","url":null,"abstract":"This paper presents mainly the two control topologies of Dc-Dc Buck Converter, particularly, the Current Mode Control (CMC) and the Voltage Mode Control (VMC) with the prime objective to study their operations and also to show their transient response under line and load disturbances. Thus the simulation studies performed on buck converter and the result analysis will shows that current mode control require smaller time to attain steady state than voltage mode control and hence current mode control provides faster transient response than voltage mode control.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125368230","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}
{"title":"Morphological evolution of MnO2 based nanostructures by tuning the reaction time","authors":"R. Roychaudhuri, D. Acharyya, P. Bhattacharyya","doi":"10.1109/ISDCS.2018.8379628","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379628","url":null,"abstract":"The present paper illustrates a morphological evolution of Manganese dioxide (MnO2) nanostructures by varying the reaction time of hydrothermal process. To establish the morphological evolution, three samples were synthesized for three different reaction times (3 hrs, 5 hrs, and 7 hrs). Morphological characterizations of the synthesized nanostructures were performed using FESEM. Further, Raman spectra are presented to validate the crystal structure of the different nanostructures. It is evident from the FESEM images that microsphere/nanosheets based hierarchical structures, nanosheets intertwined with nanorods, and, nanorods based urchin like nanostructures were obtained by tuning the hydrothermal reaction time to 3 hrs, 5 hrs, and 7 hrs, respectively. The underlying morphological evolution mechanism is discussed and correlated with the characterization results. Moreover, three planar devices (based on microsphere/ nanosheets based hierarchical structures, nanosheets intertwined with nanorods, and nanorods based urchin like nanostructures) were fabricated by taking electrical contacts from top of the nanostructure layer and subsequently the device resistances were measured. Further, the electrical characterization finding is correlated with the material characterization results of the synthesized nanostructures for the three samples.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131523789","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}
{"title":"Effects of trap position and number dependence of threshold voltage in p-MOSFETs","authors":"S. Das, Tara Prasanna Dash, S. Dey, C. K. Maiti","doi":"10.1109/ISDCS.2018.8379637","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379637","url":null,"abstract":"This work focuses on modeling of the impact of trap position and number dependence on the variation of threshold voltages in nanoscale p-MOSFETs. Reliability degradation mechanisms are studied using four-state nonradiative multiphonon model. A novel reliability technology TCAD framework has been developed to predict the threshold voltage variation during device design phase. The influence of trap number and spatial distribution on the device threshold voltage has been investigated from simulation.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131847074","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}
{"title":"A predictive model to investigate the effects of gate driver common mode currents in SiC MOSFET based converter","authors":"M. Krishna, K. Hatua","doi":"10.1109/ISDCS.2018.8379648","DOIUrl":"https://doi.org/10.1109/ISDCS.2018.8379648","url":null,"abstract":"Though desirable, fast switching speeds of SiC MOSFETs can cause significant common mode currents through the gate driver circuitry. This can deteriorate the signal integrity of the whole converter. The Present paper proposes a predictive model to estimate these common mode currents and the corruption in the signal integrity. Further, the presented model is used to investigate the impact of common mode choke placed at various positions in the gate driver. The predictions of the proposed model are verified both in simulation as well as in the hardware test set up.","PeriodicalId":374239,"journal":{"name":"2018 International Symposium on Devices, Circuits and Systems (ISDCS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125737789","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}