Integrated EMI/Thermal Design forSwitching Power SuppliesWei ZhangThesis submitted to the Faculty of theVirginia Polytechnic Institute and State Universityin partial fulfillment of the requirements for the degree of Integrated EMI/Thermal Design forSwitching Power SuppliesWei Zhang(ABSTRACT)This work presents the modeling and analysis of EMI and thermal performancefor switch power supply by using the CAD tools. The methodology and design guidelinesare developed.By using a boost PFC circuit as an example, an equivalent circuit model is builtfor EMI noise prediction and analysis. The parasitic elements of circuit layout andcomponents are extracted analytically or by using CAD tools. Based on the model, circuitlayout and magnetic component design are modified to minimize circuit EMI. EMI filtercan be designed at an early stage without prototype implementation.In the second part, thermal analyses are conducted for the circuit by using thesoftware Flotherm, which includes the mechanism of conduction, convection andradiation. Thermal models are built for the components. Thermal performance of thecircuit and the temperature profile of components are predicted. Improved thermalmanagement and winding arrangement are investigated to reduce temperature.In the third part, several circuit layouts and inductor design examples are checkedfrom both the EMI and thermal point of view. Insightful information is obtained.
上傳時間： 2013-11-16
上傳用戶：萍水相逢
a8259 可編程中斷控制 altera提供 The a8259 is designed to simplify the implementation of the interrupt interface in 8088 and 8086 based microcomputer systems. The device is known as a programmable interrupt controller. The a8259 receives and prioritizes up to 8 interrupts, and in the cascade mode, this can be expanded up to 64 interrupts. An asynchronous reset and a clock input have been added to improve operation and reliability.
上傳時間： 2015-01-02
上傳用戶：panpanpan
The power of programmability gives industrial automation designers a highly efficient， cost-effective alternative to traditional motor control units （MCUs）。 The parallel-processing power， fast computational speeds， and connectivity versatility of Xilinx® FPGAs can accelerate the implementation of advanced motor control algorithms such as Field Oriented Control （FOC）。 Additionally， Xilinx devices lower costs with greater on-chip integration of system components and shorten latencies with high-performance digital signal processing （DSP） that can tackle compute-intensive functions such as PID Controller， Clark/Park transforms， and Space Vector PWM. The Xilinx Spartan®-6 FPGA Motor Control Development Kit gives designers an ideal starting point for evaluating time-saving， proven， motor-control reference designs. The kit also shortens the process of developing custom control capabilities， with integrated peripheral functions （Ethernet， PowerLink， and PCI® Express）， a motor-control FPGA mezzanine card （FMC） with built-in Texas Instruments motor drivers and high-precision Delta-Sigma modulators， and prototyping support for evaluating alternative front-end circuitry.
上傳時間： 2013-10-28
上傳用戶：wujijunshi
This book introduces embedded systems to C and C++ programmers. Topics include testing memory devices, writing and erasing Flash memory, verifying nonvolatile memory contents, controlling on-chip peripherals, device driver design and implementation, optimizing embedded code for size and speed, and making the most of C++ without a performance penalty. Pages : 336 Slots : 1
標簽： programmers introduces embedded include
上傳時間： 2013-12-10
上傳用戶：shizhanincc
This algorithm was developed by Professor Ronald L. Rivest of MIT and can be found presented in several languages. What I provide to you here is a C++ derivative of the original C implementation of Professor Rivets. The library code itself is platform-independant and has been tested in Redhat Linux. I ve included the sample code and makefile that I used for the Linux test. The demo, however, was written with Visual C++ 6 on a Windows 2000 platform.
標簽： L. Professor algorithm developed
上傳時間： 2014-12-21
上傳用戶：gonuiln
每個C++/C程序通常分為兩個文件。一個文件用于保存程序的聲明（declaration），稱為頭文件。另一個文件用于保存程序的實現（implementation），稱為定義（definition）文件。 C++/C程序的頭文件以“.h”為后綴，C程序的定義文件以“.c”為后綴，C++程序的定義文件通常以“.cpp”為后綴（也有一些系統以“.cc”或“.cxx”為后綴）
標簽： declaration 程序 分
上傳時間： 2014-01-27
上傳用戶：colinal
This scheme is initiated by Ziv and Lempel [1]. A slightly modified version is described by Storer and Szymanski [2]. An implementation using a binary tree is proposed by Bell [3]. The algorithm is quite simple: Keep a ring buffer, which initially contains "space" characters only. Read several letters from the file to the buffer. Then search the buffer for the longest string that matches the letters just read, and send its length and position in the buffer.
標簽： initiated described modified slightly
上傳時間： 2014-01-09
上傳用戶：sk5201314
UML（統一建模語言）是一個繪制軟件概念圖的圖形化記法(notation)。人們可以用它繪制圖形，用這些圖形來表示一個計劃進行的軟件設計的問題域，或者用這些圖來表示一個已經完成的軟件實現。Fowler（譯者注：著名IT 技術作家）描述它們時分成了三種不同的層次：概念層（Conceptual）、規格說明層（Specification）和實現層（Implementation），我們將細述后面兩種。
上傳時間： 2015-04-06
上傳用戶：zhenyushaw
c語言編譯器，跨平臺，4.2版本 lcc version 3.x is described in the book "A Retargetable C Compiler: Design and Implementation" (Addison-Wesley, 1995, ISBN 0-8053-1670-1). There are significant differences between 3.x and 4.x, most notably in the intermediate code. For details, see http://www.research.microsoft.com/~drh/pubs/interface4.pdf.
上傳時間： 2015-04-06
上傳用戶：jkhjkh1982
c語言編譯器，3.6版本 lcc version 3.x is described in the book "A Retargetable C Compiler: Design and Implementation" (Addison-Wesley, 1995, ISBN 0-8053-1670-1). There are significant differences between 3.x and 4.x, most notably in the intermediate code. For details, see http://www.research.microsoft.com/~drh/pubs/interface4.pdf.
上傳時間： 2015-04-06
上傳用戶：小儒尼尼奧
