赛米控推出适用于各种品牌、各种封装的即插即用的IGBT驱动核

在新一代IGBT驱动核SKYPER中，体现了“少即是精”的理念，该驱动电路具备了驱动IGBT模块所必需的最基本的功能。这种可靠的驱动核，经过在成本和功能方面的优化后，可以在不同的应用领域适用于不同品牌、不同封装的IGBT，并且适用于焊接和插接。     

IGBT驱动模块M57962AL的应用研究

IGBT专用驱动模块M57962AL适于驱动大功率器件，可根据其内部的自保护功能对其应用电路进行安全可靠设计。该模块采用双电源驱动，有过流过压检测电路和保证IGBT可靠通断电路。总之，能够安全地驱动开关、变频器中的大功率IGBT。     

一种紧凑型全桥DC-DC隔离电源设计

针对半桥IGBT集成驱动板上隔离电源及驱动板负载的特点,设计了一种两组磁芯共用一组高频全桥开关的DC-DC隔离电源。简洁的电路产生4路全桥驱动脉冲信号,无需隔离,实现了板上电源的紧凑设计,提高了功率密度。对关键信号的产生进行了仿真实验,结果表明,该电源电路简洁、高效、可靠,与IGBT半桥集成驱动板达到了良好的结合。     

面向小功率驱动应用的新型SOI驱动器和SmartPACK／Smart PIM模块

本文基于SOI技术,开发了一款新型的600V/0.3A 6-pack IGBT/MOSFET驱动器芯片.此款名为6ED003L06-F的芯片集成了三相电平转换、门极驱动和电路保护等诸多特性，在缩小芯片尺寸的同时也提高了性能，例如抗反相瞬态电压的鲁棒性等。另外，本文还利用该SOI驱动芯片开发了SmartPACK/SmartPIM系列新型IPM模块，该模块在一块基于DCB层的底板上集成了SOI驱动器，600V IGBT3和自举功能，并且无须支承板。这种IPM可对应6A-12A的额定电流，同时具有结构紧凑、成本低廉、操作简单等优点，适用于各类小功率驱动特别是消费类驱动应用。     

在线研讨会——与最新的产品发展、解决方案和技术更新同步

利用智能栅极驱动光耦解决设计难题时间:2012-12-6绝缘栅极晶体管(IGBT)及其功率模块一直是太阳能逆变器、马达驱动和不间断电源(UPS)等大功率工业应用的首选开关器件,因而需要栅极驱动电路来提供优化驱动和保护功能。最近飞兆半导体开发出一款具有优化成本、高可靠性的IGBT驱动光耦产品     

激光器电源中IGBT的驱动与保护电路设计

在激光器电源中，IGBT驱动与保护功能通过集成模块FAN8800来实现。讲述驱动与保护电路的设计、器件的选取及调试。该电路在激光器电源中运行稳定可靠，可广泛应用于各类电源中IGBT的驱动。     

基于SKYPER^TM32的IGBT驱动电路的设计

详细介绍了一种新型的适用于高压IGBT的驱动模块的内部结构和工作特点．SKYPERTM32驱动模块工作频率高，驱动电流大，具有完善的短路保护及短脉冲抑制功能。并介绍了该模块在基于飞轮储能系统的动态电压恢复器中的应用。结果表明，SKYPERTM32是性能优良的新型IGBT驱动模块。     

IGBT模块的一种驱动设计

介绍了光电耦合器件HCPL-3120和HCPL-316J的功能和特点.三相电压型逆变器的每相均由上下桥臂(两个IGBT)组成,采用HCPL-3120驱动IGBT模块(BSM10GP120)的上桥臂,采用HCPL-316J驱动IGBT模块的下桥臂.HCPL-316J具有过流、欠压保护功能,能对IGBT模块提供及时保护.实验证明,该驱动方法具有较高的稳定性和良好的保护功能.     

大功率IGBT驱动电路的设计

大功率IGBT（绝缘栅双极晶体管）在现代雷达发射机,特别是全固态调制器、高压开关电源中得到广泛应用。其驱动电路要求驱动能力强、保护迅速有效。介绍了互感器触发方式的大功率IGBT驱动电路的设计。该电路具有输出电阻低、电流增益高等优点,并具备快速过流检测和保护功能,解决了IGBT高低电位隔离以及多个IGBT同步驱动问题。实验表明,该驱动电路不仅满足设计要求,而且工作稳定可靠,通用性强,可广泛应用于全固态调制器和高压开关电源。     

落木源电子IGBT驱动产品前三季度业绩喜人

正国内IGBT驱动领域代表性厂家——落木源电子近日宣布,公司2014财年前三季度的产品销售量及营收均超过先前预计水平。据悉,落木源IGBT驱动类产品主要分为IGBT驱动IC、IGBT驱动板、驱动电源,仅1GBT驱动IC就已累计销售超过一百万片,客户遍及国内各种工业领域,特别是在大功率电源、     

Convergence of Price-Based Resource Allocation Algorithms in Multicellular Multicarrier Systems

Inter-cell interference mitigation is a key challenge in the heterogeneous wireless networks which are expected to use an aggressive frequency reuse factor and a high-density access point deployment to improve coverage and spectral efficiency. In this paper, the problem of resources allocation in multicell Orthogonal Frequency Division Multiple Access wireless system is considered with universal frequency reuse and target of Weighted Sum-Rate Maximization. We address multi cell modified iterative water filling as an iterative power allocation algorithm. Also, a new extension of fixed point implementation of Successive Convex Approximation for Low complExity (SCALE) algorithm to multicellular system [referred to as Multi Cell Fixed point SCALE (MCF-SCALE)] is presented and it has been shown both of them resulted to the same convergence point. It is also demonstrated that using Lagrangian multiplier instead of noise variance in Standard Yates framework (as has been used in some previous papers) is not a suitable method for proving convergence and all the previous results based on this pattern need to be revised. Finally, a new framework is presented for proving the convergence of MCF-SCALE algorithm based on Jacobi iterative algorithm. Moreover, some previous convergence criteria are shown to be interpreted as a special case of this condition.     

2SD106AI在混合动力汽车电机驱动系统中的应用

在电机驱动系统中,良好的驱动电路是保证电机可靠运行的关键技术之一,本文介绍了以CONCEPT公司的SCALE系列驱动模块2SDl06AI-17为核心的驱动电路,并将其应用到混合动力汽车电机驱动系统中。实验表明,2SD106AI-17驱动模块具有较好的驱动能力和较强的可靠性。     

SCALE: A Low-Complexity Distributed Protocol for Spectrum Balancing in Multiuser DSL Networks

Dynamic spectrum management of digital subscriber lines (DSLs) has the potential to dramatically increase the capacity of the aging last-mile copper access network. This paper takes an important step toward fulfilling this potential through power spectrum balancing. We derive a novel algorithm called SCALE, that provides a significant performance improvement over the existing iterative water-filling (IWF) algorithm in multiuser DSL networks, doing so with comparable low complexity. The algorithm is easily distributed through measurement and limited message passing with the use of a spectrum management center. We outline how overhead can be managed, and show that in the limit of zero message-passing, performance reduces to IWF.     

High-Speed and Low-Power IP for Embedded Block Coding with Optimized Truncation (EBCOT) Sub-Block in JPEG2000 System Implementation

In this paper we propose novel high-speed and low-power architecture for the context formation sub-block in tier-1 block of JPEG2000 system. The proposed architecture is inspired from the statistical analysis results on 20 test images, each one 512*512 pixels, gray scale with 8 bit pixels. The proposed architecture incorporates a check unit to detect unnecessary operations in both pass1 and pass2 of the EBCOT block. For code block size of 64*64 bits, the timing and power consumption analysis show that the proposed architecture reduces the power consumption about 20.64% and increases the processing speed to about 33.67% with respect to the speedy reference architecture. The proposed architecture has a processing speed close to the parallel mode architectures with almost the same area for serial mode architectures and more power saving. The proposed architecture gathers the basic advantages of the serial and parallel mode implementations in addition to lower power consumption. Ramy E. Aly received the B.S. degree in electrical engineering from University of Alexandria, Egypt, in 1994, and the M.S. degree in electrical engineering from Old Dominion University, VA, in 2001 and M.S. in computer engineering from University of Louisiana at Lafayette, in 2002. He is currently working toward his Ph.D. degree at the Center for Advanced Computer Studies (CACS), University of Louisiana, Lafayette. Since 2001, he has been a Research Assistant with the CACS, in the VLSI Research group of M. A. Bayoumi, University of Louisiana. His research interests include low-power VLSI circuit design, low-power SRAM design, JPEG2000 Architecture and CAD-tools. Magdy A. Bayoumi(S'80-M'84-SM'87-F'99) received the B.Sc. and M.Sc. degrees in electrical engineering from Cairo University, Cairo, Egypt, in 1973 and 1977, the M.Sc. degree in computer engineering from Washington University in St. Louis, MO, in 1981, and the Ph.D. degree in electrical engineering from the University of Windsor, Windsor, ON, Canada, in 1984. Currently, he is the Director of the Center for Advanced Computer Studies (CACS), Department Head of the Computer Science Department, the Edmiston Professor of Computer Engineering, and the Lamson Professor of Computer Science at The Center for Advanced Computer Studies, University of Louisiana at Lafayette, where he has been a Faculty Member since 1985. He has edited and coedited three books in the area of VLSI Signal Processing. He has one patent pending. His research interests include VLSI design methods and architectures, low-power circuits and systems, digital signal processing architectures, parallel algorithm design, computer arithmetic, image and video signal processing, neural networks, and wide-band network architectures. Dr. Bayoumi received the University of Louisiana at Lafayette 1988 Researcher of the Year Award and the 1993 Distinguished Professor Award. He was an Associate Editor of the IEEE CIRCUITS AND DEVICES MAGAZINE, the IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, the IEEE TRANSACTIONS ON NEURAL NETWORKS, and the IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS-II: ANALOG AND DIGITAL SIGNAL PROCESSING. He was an Associate Editor of the Circuits and Devices Magazine and is currently an Associate Editor of Integration, the VLSI Journal, and the Journal of VLSI Signal Processing Systems. He is a Regional Editor for the VLSI Design Journal and on the Advisory Board of the Journal on Microelectronics Systems Integration. From 1991 to 1994, he served on the Distinguished Visitors Program for the IEEE Computer Society, and he is on the Distinguished Lecture Program of the Circuits and Systems Society. He was the Vice President for technical activities of the IEEE Circuits and Systems Society. He was the Cochairman of the Workshop on Computer Architecture for Machine Perception in 1993, and is a Member of the Steering Committee of this workshop. He was the General Chairman of the 1994 MWSCAS and is a Member of the Steering Committee of this symposium. He was the General Chairman for the 8th Great Lake Symposium on VLSI in 1998. He has been on the Technical Program Committee for ISCAS for several years and he was the Publication Chair for ISCAS'99. He was also the General Chairman of the 2000 Workshop on Signal Processing Design and Implementation. He was a founding member of the VLSI Systems and Applications Technical Committee and was its Chairman. He is currently the Chairman of the Technical Committee on Circuits and Systems for Communication and the Technical Committee on Signal Processing Design and Implementation. He is a Member of the Neural Network and the Multimedia Technology Technical Committees. Currently, he is the faculty advisor for the IEEE Computer Student Chapter at the University of Louisiana at Lafayette.     

三代半航空电子系统核心处理技术研究

集中控制和综合处理技术已广泛应用于现代军用航空电子系统,综合处理机作为航空电子系统控制和管理的计算机信息处理平台,其开放式系统结构、综合处理技术及可靠性将是系统设计的关键。介绍了一种高性能机载核心处理计算机系统。根据航空电子系统功能需求,进行了综合化、层次化结构设计,并对该系统的重构管理、综合显示管理和告警管理等关键技术进行了研究分析,同时给出了合理的解决方案。航空电子系统综合试验表明,核心处理机性能先进,可靠性高,并极大地改善和提高了航空电子系统的整体性能。     

小波变换结合子带编码的Internet图像传输的计算机模拟

尽管Internet带宽巨大，但网络的信息量、用户数量更是庞大的，其拥塞情况是随机的。图像信号在Internet上根据网络拥塞情况进行分层传输与接收是一件有意义的研究工作。当网络处于正常状态时，实时传输高清晰度图像，当网络拥塞情况较严重时，主动丢弃增强层信号仅恢复基本层图像信号。本文从三个方面探讨了小波变换结合子带编码的Internet图像传输的计算机模拟，首先分别介绍小波变换、子带编码的各自特点，接着介绍Internet图像传输的特点，最后给出计算机模拟的实验。     

一种双频双极化宽带高温超导微带天线的研究

为了提高天线的性能,本文设计了一种口径耦合馈电的多层介质高温超导微带天线。天线的馈电网络部分采 用了高温超导材料,利用了高温超导材料具有低表面阻抗的特性,提高了天线的效率。高温超导微带天线的衬底介电 常数过高,多层介质的结构引入一层真空衬底,降低平均介电常数,这样能展宽天线的带宽。天线缝隙采用H 型缝 隙,提高了两极化端口间的隔离度。天线的仿真结果表明了设计思路的合理性和可行性。     

非致命激光武器雨中传输衰减系统设计研究

非致命激光武器实际应用中会受到大气环境影响,造成激光能量衰减,严重影响其作战效果。为精确了解激光在雨中传输的衰减,本文建立了激光在雨中传输的衰减模型,分析研究了激光在雨中的透过率,搭建了激光在雨中传输的衰减实验平台,实验研究了激光透过率与降雨强度和传输距离的关系。结果表明,激光在雨中传输衰减很大程度上取决于降雨强度和传输距离,雨量越大,传输距离越远,衰减越严重,当雨量为60 mm/h,激光传输200 m距离时,透过率已不到40％。仿真和实验结果吻合较好,说明所建立的衰减模型基本符合实际情况,同时也表明搭建的激光雨中传输衰减系统可以用于研究非致命激光武器雨中传输衰减,具有结构简单、易于操作、灵活性较好等优点。     

Ku 波段回旋行波管设计与分析

设计了用于Ku波段的介质加载回旋行波管。阐述了磁控注入电子枪的设计,采用均匀介质加载的结构来抑制回旋行波管的自激振荡,降低了回旋行波管的起振电流,同时提高了寄生模式的起振长度。设计了线极化输入耦合器。设计的回旋行波管工作电压为70kV,工作电流为10A,最大峰值功率210kW,最大功率处增益为35dB,3dB带宽为1.8GHz。     

一种基于顺序统计量的距离扩展目标检测器

该文提出一种高斯白噪声中的距离扩展目标检测器。实际目标的宽带雷达回波能量往往集中于若干距离单元中,基于这一事实,对检测窗内的回波数据按能量降序进行排列,然后顺序进行能量积累和检测,直到做出判决为止。文中详细推导了检测器的虚警概率,给出了设置检测门限的方法。最后通过Monte Carlo实验,利用两类特殊能量分布方式的距离像和一个实际目标的实测距离像,对比分析了该文提出的基于顺序统计量的距离扩展目标检测器相对于能量积累检测器的性能。对于回波能量集中于少数距离单元的距离像,该文提出的检测器比能量检测器具有更好的检测性能。