Yifan Ding, Biyao Zhao, Shuang Liang, S. Bai, S. Connor, M. Cocchini, B. Achkir, S. Scearce, E. Li, B. Archambeault, J. Fan, J. Drewniak
{"title":"Equivalent Inductance Analysis and Quantification for PCB PDN Design","authors":"Yifan Ding, Biyao Zhao, Shuang Liang, S. Bai, S. Connor, M. Cocchini, B. Achkir, S. Scearce, E. Li, B. Archambeault, J. Fan, J. Drewniak","doi":"10.1109/ISEMC.2019.8825244","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825244","url":null,"abstract":"Power Distribution Network (PDN) design is an important part of high-speed digital designs. In order to meet the need of high operation speed and low power voltage supply, the impedance of PDN should be lower than the target impedance of the design requirement. Decoupling capacitors are added on the PCB to lower the PDN impedance. The PCB PDN design is often guided by design rules and experience. In this paper, commonly-used PCB PDN designs are analyzed and categorized based on inductance contribution from specific portions of the current path. Then, the inductance components are quantified for different parts of the geometry in different designs.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133014492","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}
Ling Zhang, Zhongyang Zhang, Chenxi Huang, Han Deng, Hank Lin, B. Tseng, J. Drewniak, C. Hwang
{"title":"Decoupling Capacitor Selection Algorithm for PDN Based on Deep Reinforcement Learning","authors":"Ling Zhang, Zhongyang Zhang, Chenxi Huang, Han Deng, Hank Lin, B. Tseng, J. Drewniak, C. Hwang","doi":"10.1109/ISEMC.2019.8825249","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825249","url":null,"abstract":"Selection of decoupling capacitors (decaps) is important for power distribution network (PDN) design in terms of lowering impedance and saving cost. Good PDN designs typically mean satisfying a target impedance with as less decaps as possible. In this paper, an inductance-based method is utilized to calculate the port priority fist, and afterwards deep reinforcement learning (DRL) with deep neural network (DNN) is applied to optimize the assignment of decaps on the prioritized locations. The DRL algorithm can explore by itself without any prior physical knowledge, and the DNN is trained with the exploration experience and eventually converges to an optimum state. The proposed hybrid method was tested on a printed-circuit-board (PCB) example. After some iterations of training the DNN successfully reached to an optimum design, which turned out to be the minimum number of decaps that can satisfy the target impedance. The usage of DRL with DNN makes the algorithm promising to include more variables as input and handle more complicated cases in the future.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133060427","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":"Jitter-Aware Target Impedance","authors":"Yin Sun, Jingook Kim, C. Hwang","doi":"10.1109/ISEMC.2019.8825313","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825313","url":null,"abstract":"A new concept of target impedance which directly correlates the I/O buffer output jitter with the power distribution network (PDN) design is proposed. Jitter-ware target impedance is derived from the time domain waveform of power voltage ripple and the maximum allowable jitter assuming the single stage buffer as a RC network, which is then applied to the PDN design given a certain jitter specification. From HSPICE simulation of transient switching current, PDN impedance and power voltage ripple, it is shown that the proposed jitter-aware target impedance successfully correlates power supply induced jitter (PSIJ) and PDN impedance parameters with a simple analytical expression.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124036474","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}
Yin Sun, Jianmin Zhang, Zhiping Yang, C. Hwang, Songping Wu
{"title":"Simulation Investigation on Acoustic Noise Caused by “Singing” Capacitors on Mobile Devices","authors":"Yin Sun, Jianmin Zhang, Zhiping Yang, C. Hwang, Songping Wu","doi":"10.1109/ISEMC.2019.8825205","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825205","url":null,"abstract":"Recently, the acoustic noise emanating from mobile devices becomes an important issue for user experience. The vibration of multilayer ceramic capacitors (MLCCs) mounted on printed circuit board (PCB) can transfer to the PCB and lead to acoustic noise. To mitigate singing cap acoustic noise, sometimes it has to trade off EMC/SI/PI performance during system design. So, simulation methodology is critical to predict critical acoustic issue and help design tradeoff. In this paper, a simulation methodology to provide design guideline for MLCC placement and PCB fixation with the aim to decrease board vibration is proposed. A finite element model of the multilayer PCB considering detailed copper/dielectric distribution of each layer is developed. Modal analysis is firstly performed to analyze the vibration characteristics of the bare PCB. Then the harmonic response of the board due to vibration excitation of MLCC is modeled. Based on the modal analysis result, the design guideline for MLCC placement and PCB fixation location can be established. The proposed guideline is validated through PCB harmonic response simulation.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134200540","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}
Xinglin Sun, Yuandong Guo, Yin Sun, K. Song, Lingyun Ye, X. Ye, J. Drewniak, J. Fan
{"title":"Causality Analyzing for Transmission Line with Surface Roughness","authors":"Xinglin Sun, Yuandong Guo, Yin Sun, K. Song, Lingyun Ye, X. Ye, J. Drewniak, J. Fan","doi":"10.1109/ISEMC.2019.8825246","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825246","url":null,"abstract":"Surface roughness of the conductor in transmission lines will introduce extra losses. The recently proposed Huray model is quite accurate for modeling these additional losses by changing R terms in RLGC models. However, only focusing on the loss modeling of the transmission line may lead to causality issues in time domain simulations. In this paper, the causality requirements of the RLGC models are theoretically analyzed firstly. Then, two solutions of the causality problems in Huray model-based transmission line with rough conductors modeling were proposed and compared. One of them is based on the numerical Hilbert transform, and the other one is analytically based on a complex-valued roughness factor. The causalities of those two solutions are validated by a time domain pulse through a transmission line. The results comparisons of the received pulse responses after the transfer functions show that both methods can improve the causality of the wave propagation term significantly, whereas the analytical solution has better performances and the numerical method has some limitations.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125143522","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}
Shaohui Yong, Yuanzhuo Liu, Han Gao, S. Hinaga, S. De, Darja Padilla, Douglas Yanagawa, J. Drewniak, V. Khilkevich
{"title":"A Practical De-embedding Error Analysis Method Based on Statistical Circuit Models of Fixtures","authors":"Shaohui Yong, Yuanzhuo Liu, Han Gao, S. Hinaga, S. De, Darja Padilla, Douglas Yanagawa, J. Drewniak, V. Khilkevich","doi":"10.1109/ISEMC.2019.8825291","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825291","url":null,"abstract":"De-embedding methods require multiple identical fixtures. However, in reality the fixtures cannot be fabricated perfectly identical due to manufacturing variations. The identical assumptions for de-embedding algorithm will be unavoidably violated, which is going to introduce error due to de-embedding. In this paper, a novel methodology is proposed to estimate the error due to de-embedding for practical testing vehicle measurement. Models of the Thru and Total lines with fixtures are created. Perturbation in the fixtures is introduced based on TDR measurements. The confidence interval of the de-embedded insertion loss is obtained after statistical analysis assuming the variations among fixtures are subjected to Gaussian distribution.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"67 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129640842","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":"Active Coil System for Magnetic Field Reduction in an Automotive Wireless Power Transfer System","authors":"T. Campi, S. Cruciani, F. Maradei, M. Feliziani","doi":"10.1109/ISEMC.2019.8825202","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825202","url":null,"abstract":"A novel design of active coils is proposed to reduce the magnetic field generated by the currents flowing into the coils of a wireless power transfer (WPT) system for recharging the batteries of an electric vehicle (EV). The main idea is to split the traditional active loop, in two separate shielding coils. They have semi-annular shape and are placed on the ground pad around the WPT primary coil. The geometry and excitation of the active coils are varied to minimize the magnetic field beside the active coils without degrading the WPT electrical performance.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116096810","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}
Jun Xu, S. Bai, Kartheek Nalla, Mike Sapozhnikov, J. Drewniak, C. Hwang, J. Fan
{"title":"Power Delivery Network Optimization Approach using an Innovative Hybrid Target Impedance","authors":"Jun Xu, S. Bai, Kartheek Nalla, Mike Sapozhnikov, J. Drewniak, C. Hwang, J. Fan","doi":"10.1109/ISEMC.2019.8825309","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825309","url":null,"abstract":"A well-designed power delivery network (PDN) demands a set of efficient and effective modeling and optimization methodology for the Chip-Package-PCB System. This paper work provided and validated the hybrid target impedance for the PDN impedance optimization in frequency domain and the physics-based equivalent circuit model with small signal model for voltage response validation in time domain. The hybrid target impedance defined with current profile-based discrete and continuous target impedance. Two key impedance points in discrete were identified for on-chip worst case switching scenario and voltage regulator module switching ripple, more points can be added if specific core power switching scenario identified. The continuous impedance points are from the conventional target impedance by voltage ripple to dynamic current change. This hybrid method provides a more effective and convergent way to perform system level decoupling capacitors optimization in frequency domain and to meet voltage specification in time domain, also to avoid overdesigning for cost saving.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124778075","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}
Thomas F. Landinger, Guenter Schwarzberger, A. Jossen
{"title":"A Novel Method for High Frequency Battery Impedance Measurements","authors":"Thomas F. Landinger, Guenter Schwarzberger, A. Jossen","doi":"10.1109/ISEMC.2019.8825315","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825315","url":null,"abstract":"Electrochemical Impedance Spectroscopy (EIS) is widely used to measure the impedance of lithium-ion (Li-ion) battery cells. The EIS focuses on frequencies from millihertz to kilohertz, since the electrochemical processes do not have shorter time constants. To investigate high frequency phenomena as the electromagnetic compatibility (EMC) of an automotive traction battery, impedance measurements also in the higher megahertz range are necessary. State-of-the-art EIS measurement devices for batteries do not meet the requirements of this application, as they can cause electromagnetic wave reflections and do not provide sufficient calibration techniques. In this paper, we present a method to determine the battery impedance for a wide frequency range from 1 kHz to 300 MHz. Using a vector network analyzer, two-port scattering parameters (S-parameters) of a 18650 Li-ion cylindrical cell are measured with the shunt-through method. The resulting cell impedance is 40 Ωm at 1 kHz and increases to 40 Ω at 300 MHz mainly due to the external inductance of the cell.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124458695","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}
Yang Zhong, Woncheol Song, Cheolhan Kim, Changyul Park, C. Hwang
{"title":"Efficient Automotive Simulation Using Reciprocity for Intentional Electromagnetic Interference","authors":"Yang Zhong, Woncheol Song, Cheolhan Kim, Changyul Park, C. Hwang","doi":"10.1109/ISEMC.2019.8825233","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825233","url":null,"abstract":"An efficient automotive simulation method for intentional electromagnetic interference (IEMI) is developed. As the full automotive simulation is computationally demanding, running the simulation for all possible IEMI attack locations is prohibitive. Therefore, a new methodology based on the reciprocity theorem is proposed to replace all regular simulations by one special simulation. The special simulation uses the reverse model which is defined by switching the location of source and observation point in the regular automotive simulation model. The reciprocity based simulation is validated by comparing the simulated results with all measured data in the IEMI experiment.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124805702","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}