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2013 9th International Workshop on Electromagnetic Compatibility of Integrated Circuits (EMC Compo)最新文献

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EMC analysis of current source gate drivers 电流源栅极驱动器的电磁兼容分析
A. Schindler, Benno Koeppl, B. Wicht
The prevention of electromagnetic emissions (EME) in bridge applications is of major importance, especially in automotive applications. Current source gate drivers are a popular approach to improve the performance in electromagnetic compatibility (EMC). Despites, their EMC performance has rarely been investigated in detail. Starting with the differences in the gate drive transients versus a conventional hard switching driver this paper presents a study regarding the EMC behavior. Different application cases are considered: Switching time, direction of load current, different load current levels. Experimental evaluation boards were prepared for both driver methods, results are provided for various cases. In order to identify the potential of current source gate drivers, the influence of the dv/dt and di/dt at bridge output were studied based on simulation. The di/dt turned out to be more important, a 5dBμV improved EMC was achieved by extending the duration of the current slope from 82ns to 92ns. The simulation setup also allowed to analyze the turn-on and turn-off transitions separately regarding EMC. Mainly due to the reverse recovery the turn-on transition gives 10dBμV worse EMC noise compared to turn-off. As an overall result, EMC improvements due to current source gate drivers in general are very case dependent.
防止电磁辐射(EME)在桥梁应用中具有重要意义,特别是在汽车应用中。电流源栅极驱动器是提高电磁兼容性能的一种常用方法。尽管如此,它们的EMC性能很少被详细研究。本文从栅极驱动瞬态与传统硬开关驱动器的差异出发,对其电磁兼容行为进行了研究。考虑了不同的应用情况:开关时间,负载电流方向,不同的负载电流水平。对两种驱动方法都制作了实验评价板,给出了不同情况下的结果。为了识别电流源栅极驱动器的电位,在仿真的基础上研究了电桥输出的dv/dt和di/dt对电流源栅极驱动器电位的影响。di/dt更为重要,通过将电流斜率从82ns延长到92ns,实现了5dBμV的电磁兼容改善。仿真设置还允许根据EMC分别分析导通和关断转换。主要由于反向恢复,导通过渡比关断的EMC噪声差10dBμV。总的结果是,由于电流源栅极驱动器引起的EMC改进通常非常依赖于具体情况。
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引用次数: 3
Electro-magnetic robustness of integrated circuits: from statement to prediction 集成电路的电磁鲁棒性:从陈述到预测
S. Bendhia, A. Boyer
EMRIC project, a new research activity mixing integrated circuits electromagnetic compatibility (EMC) and integrated circuits (ICs) reliability, provides methods and guidelines to circuits and equipment designers to ensure EMC during lifetime of their applications. In order to improve the ICs electromagnetic robustness (EMR) this project studies the effect of ICs ageing on electromagnetic emission and immunity to radio frequency interferences, clarifies the link between IC degradations and related EMC drifts and develops prediction models and propose “time insensitive” EMC protection structures.
EMRIC项目是一项将集成电路电磁兼容性(EMC)和集成电路(ic)可靠性相结合的新研究活动,为电路和设备设计人员提供方法和指南,以确保其应用生命周期内的EMC。为了提高集成电路的电磁鲁棒性(EMR),本项目研究了集成电路老化对电磁发射和抗射频干扰的影响,阐明了集成电路老化与相关电磁兼容漂移之间的联系,建立了预测模型,提出了“时间不敏感”的电磁兼容保护结构。
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引用次数: 5
Translation of automotive module RF immunity test limits into equivalent IC test limits using S-parameter IC models 利用s参数集成电路模型将汽车模块射频抗扰度测试极限转换为等效集成电路测试极限
H. Pues, Ben Brike, C. Gazda, P. Teichmann, K. Stijnen, Christian Peeters, A. Durier, D. Ginste
A method to translate immunity specifications of automotive modules into equivalent requirements at integrated circuit (IC) level, using linear scattering parameter models of the ICs, is presented. A technique is described to determine S-parameters of ICs by simulations based on back-annotated analog schematics. The simulation results are compared with measurement data obtained using a specially designed test board. As an example, simulation and measurement results are given for the input stage of an automotive sensor interface. A good agreement is obtained from the lowest test frequency up to 1 GHz. Above this value, the measured results seem to be dominated by package effects.
提出了一种利用集成电路的线性散射参数模型,将汽车模块的抗扰度指标转化为集成电路级等效要求的方法。描述了一种基于反向注释模拟原理图的模拟确定集成电路s参数的技术。仿真结果与在专门设计的测试板上获得的测量数据进行了比较。以某汽车传感器接口的输入级为例,给出了仿真和测量结果。在1ghz以下的最低测试频率下,得到了很好的一致性。在此值以上,测量结果似乎主要受一揽子效应的支配。
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引用次数: 4
An optimizing technique to lower both phase noise and susceptibility of a voltage controlled oscillator 一种降低压控振荡器相位噪声和磁化率的优化技术
J. Raoult, A. Blain, S. Jarrix
This paper deals with the electromagnetic susceptibility of a fully integrated voltage controlled oscillator. Injection locking and pulling is observed when a sinusoidal interference signal is injected on the device. To improve the immunity of the circuit we propose a procedure based on an optimization of the value of some circuit features. This work is done in relation with the optimization of the functional performances.
本文研究了全集成压控振荡器的电磁磁化率。当正弦干扰信号注入装置时,观察到注入锁紧和拔出。为了提高电路的抗扰度,我们提出了一种基于优化电路某些特征值的方法。这项工作与功能性能的优化有关。
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引用次数: 1
A technique for estimating signal waveforms at inaccessible points in high speed digital circuits 一种估计高速数字电路中不可达点信号波形的技术
T. Kinoshita, Shoichi Hara, Eiji Takahashi, K. Uriu
There is a large difference between the waveforms of high speed digital signals measured on a printed circuit board and those at the receiving terminals of LSI chips. In order to ensure that the high speed digital signal is correctly transferred, one of the major issues is how to estimate the waveform at the receiving terminal, where the waveform cannot be directly measured. Therefore, we have developed a new technique for estimating the waveform at the receiving terminal from the waveform measured at an accessible test point, based on the input impedance and transmission characteristics of the traces. By comparing the estimated waveform and the measured waveform in a Blu-ray Disc recorder system, it was confirmed that it is possible to estimate the waveform with high accuracy. Furthermore, it was confirmed that the estimated waveform has good correlation with the timing margin for correct data transfer.
在印刷电路板上测量的高速数字信号的波形与在大规模集成电路芯片的接收端测量的波形有很大的不同。为了保证高速数字信号的正确传输,在无法直接测量波形的接收端如何估计波形是一个主要问题。因此,我们开发了一种新技术,根据输入阻抗和走线的传输特性,从可访问的测试点测量的波形估计接收端的波形。通过对蓝光光盘刻录系统中波形的估计与实测波形的比较,证实了对波形进行高精度估计是可能的。进一步验证了估计波形与时间裕度具有良好的相关性,从而保证了数据的正确传输。
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引用次数: 0
Substrate noise reduction based on impedance balance using tunable resistances 基于可调电阻的阻抗平衡的基板降噪
A. Nakamura, Masaaki Maeda, T. Matsushima, O. Wada
Substrate noise coupling from digital circuits causes degradation of performance of analog circuits on the same LSI chip. Generally large area on the chip is necessary to reduce the substrate coupling. In this paper, a proposed method eliminates the substrate coupling by extension of the impedance balance control technique which was proposed by the authors. The impedance balance condition on the LSI chip is satisfied by tunable resistances inserted into the substrate contacts. Even if the substrate coupling between two circuits is low (for example, 70 Ω,) the substrate noise coupling was reduced enough on the condition of impedance balance.
来自数字电路的衬底噪声耦合会导致同一LSI芯片上模拟电路的性能下降。一般来说,芯片上的大面积是必要的,以减少衬底耦合。本文通过对作者提出的阻抗平衡控制技术的扩展,提出了一种消除衬底耦合的方法。通过插入衬底触点的可调谐电阻来满足LSI芯片上的阻抗平衡条件。即使两个电路之间的衬底耦合较低(例如70 Ω),在阻抗平衡的条件下,衬底噪声耦合也足够降低。
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引用次数: 2
Immunity evaluation of inverter chains against RF power on power delivery network 输电网络中逆变器链对射频功率的抗扰度评估
K. Yoshikawa, Yuji Harada, N. Miura, Noriaki Takeda, Yoshiyuki Saito, M. Nagata
Direct RF power injection on a power delivery network causes timing variations of inverter chains. The amount of period jitter in an inverter chain is strongly dominated by the frequency and amplitude of sinusoidal voltage variations on its internal power supply nodes. The conduction and conversion characteristics of the RF power from an external point of injection to the sinusoidal voltage variation on the node within a chip are modeled with a chip-package-board integrated network. The period jitter is calculated in response to the sinusoidal waveform with the voltage-dependent delay characteristics of an inverter stage. The external RF power is therefore analytically related with the period jitter of an inverter chain. Comparisons are made between the calculation and measurements for a 65 nm CMOS prototype chip featuring on-chip voltage waveform monitoring functions.
在电力输送网络上直接射频功率注入会导致逆变器链的时序变化。逆变器链的周期抖动量很大程度上取决于其内部电源节点上正弦电压变化的频率和幅度。利用芯片封装板集成网络,模拟了射频功率从外部注入点到芯片节点上正弦电压变化的传导和转换特性。周期抖动是根据逆变器级电压相关延迟特性的正弦波形计算的。因此,外部射频功率与逆变器链的周期抖动解析相关。对具有片上电压波形监测功能的65nm CMOS原型芯片进行了计算和测量的比较。
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引用次数: 4
Magnetic field coupling on analog-to-digital converter from wireless power transfer system in automotive environment 汽车环境下无线电力传输系统中模数转换器的磁场耦合
Bumhee Bae, Sunkyu Kong, Jonghoon J. Kim, Sukjin Kim, Joungho Kim
There are multiple electrical devices on automotive system, which are control devices, communication devices, and digital devices. Each electrical device can generate magnetic field, one of the critical radiated electro-magnetic interference (EMI) elements. The operating frequency of each device is different and it means that the bandwidth of magnetic field is wide. Therefore, the strong magnetic fields can degrade the performance of diverse semiconductor systems in automotive applications, but it is not well discussed yet, even though the malfunction of electrical devices on automotive system is related to safe issues. So, we focus on strong magnetic field effects of semiconductor system. Among strong magnetic field source, we targeted wireless power transfer (WPT) system, which is spotlighted and promising technology for automotive and mobile charging system and significant magnetic field source. Furthermore, we choose analog-to-digital converter (ADC), sensitive to external noise and critical system involved in control devices related to the safety issues of automobile, as a targeted semiconductor system. In this paper, we discuss the magnetic coupling path and describe how to estimate the magnetic field effects on ADC with WPT. To estimate and analyze the targeted effects on ADC, we designed the ADC using a 0.13um CMOS process and WPT system using printed circuit board (PCB). Consequently, the magnetic field couples to ADC system, and there are three methods to estimate performance degradation of ADC by magnetic field effects, one is modeling, another is simulation, and the other is measurement.
汽车系统中有多种电气设备,包括控制设备、通信设备和数字设备。每个电气设备都能产生磁场,是辐射电磁干扰(EMI)的关键要素之一。每个器件的工作频率不同,这意味着磁场的带宽很宽。因此,在汽车应用中,强磁场会降低各种半导体系统的性能,但目前尚未得到很好的讨论,尽管汽车系统中电气设备的故障涉及到安全问题。因此,我们重点研究半导体系统的强磁场效应。在强磁场源中,无线电力传输(WPT)系统是汽车和移动充电系统中最受关注和最有前途的技术,也是重要的磁场源。此外,我们选择模数转换器(ADC)作为目标半导体系统,对外部噪声敏感,涉及汽车安全问题的控制装置的关键系统。本文讨论了磁耦合路径,并描述了如何用WPT估计磁场对ADC的影响。为了评估和分析对ADC的目标影响,我们使用0.13um CMOS工艺和印刷电路板(PCB)的WPT系统设计了ADC。因此,磁场对ADC系统的影响是耦合的,对ADC系统磁场效应的性能退化估计有三种方法,一种是建模,一种是仿真,另一种是测量。
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引用次数: 1
EMI resisting LDO voltage regulator with integrated current monitor 抗EMI LDO稳压器,集成电流监视器
Philipp Schroeter, S. Jahn, F. Klotz, Fabio Ballarin, F. Gini, M. Piselli
This paper introduces a low dropout (LDO) voltage regulator with an integrated current monitor, which sets a new performance benchmark in terms of RF immunity. Compared to classic topologies the proposed circuit succeeds in a very high robustness against RF disturbances which are superimposed into the regulator's battery voltage (VS) pin and output (OUT) pin. The proposed circuit was designed using a HV-BiCMOS technology for automotive applications. Circuit theory is explained in detail and the proposed approach is confirmed by RF immunity measurements.
本文介绍了一种集成电流监测器的低差(LDO)稳压器,它在射频抗扰度方面设定了新的性能基准。与经典拓扑结构相比,所提出的电路对叠加在稳压器电池电压(VS)引脚和输出(OUT)引脚中的射频干扰具有非常高的鲁棒性。所提出的电路是使用HV-BiCMOS技术设计的,用于汽车应用。详细解释了电路原理,并通过射频抗扰度测量验证了该方法。
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引用次数: 2
Using the EM simulation tools to predict the Conducted Emissions level of a DC/DC boost converter: Introducing EBEM-CE model 利用电磁仿真工具预测DC/DC升压变换器的传导排放水平:介绍EBEM-CE模型
A. Durier, C. Marot, O. Crépel
DC/DC Boost Converters are commonly used in the electronics industry to provide a raised voltage to a specific function. These converters are constituted by a basic commutation cell (Inductor-MOS transistor-diode-capacitor) managed by an integrated circuit realizing voltage and current control typically running between 100 and 500 kHz. This control's frequency creates high conducted Electromagnetic noise which could cause troubles on the supply network. We propose to use a SPICE modeling to estimate the conducted noise on supply network during CISPR 25 CE measurements. Then, we will intend to build an EBEM-CE model of the converter from these measurements.
DC/DC升压转换器通常用于电子工业,为特定功能提供升压。这些变换器由基本整流单元(电感- mos晶体管-二极管-电容器)组成,由集成电路管理,实现电压和电流控制,通常在100和500khz之间运行。这种控制的频率产生高传导电磁噪声,可能对供电网络造成麻烦。我们建议使用SPICE模型来估计CISPR 25 CE测量期间供电网络的传导噪声。然后,我们打算根据这些测量建立转换器的EBEM-CE模型。
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引用次数: 8
期刊
2013 9th International Workshop on Electromagnetic Compatibility of Integrated Circuits (EMC Compo)
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