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
IEEE Std 1364.1-2002 IEEE Std. 1364.1 - 2002 IEEE Standard for Verilog Register Transfer Level Synthesis.rar
上傳時間： 2013-12-23
上傳用戶：erkuizhang
算法ebook(10部算法經典著作的合集) 算法ebook> 10部算法經典著作的合集 chm格式 (1)Fundamentals of Data Structures by Ellis Horowitz and Sartaj Sahni (2)Data Structures, Algorithms and Program Style Using C by James F. Korsh and Leonard J. Garrett (3)Data Structures and Algorithm Analysis in C by Mark Allen Weiss (4)Data Structures: From Arrays to Priority Queues by Wayne Amsbury (5)Information Retrieval: Data Structures & Algorithms edited by William B. Frakes and Ricardo Baeza-Yates (6)Introduction to Algorithms by Thomas H. Cormen, Charles E. Leiserson, and Ronald L. Rivest (7)Practical Data Structures in C++ by Bryan Flamig (8)Reliable Data Structures in C by Thomas Plum (9)Data Structures and Algorithms Alfred V. Aho, Bell Laboratories, Murray Hill, New Jersey John E. Hopcroft, Cornell University, Ithaca, New York Jeffrey D. Ullman, Stanford University, Stanford, California (10)DDJ Algorithms and Data Structures Articles
標簽： ebook Fundamentals Structures Ellis
上傳時間： 2015-04-04
上傳用戶：tfyt
The GRLIB IP Library is an integrated set of reusable IP cores, designed for system-on-chip (SOC) development. The IP cores are centered around the common on-chip bus, and use a coherent method for simulation and synthesis. The library is vendor independent, with support for different CAD tools and target technologies. A unique plug&play method is used to configure and connect the IP cores without the need to modify any global resources.
標簽： system-on-chip integrated designed reusable
上傳時間： 2013-12-20
上傳用戶：小眼睛LSL
TC 2.0 挖地雷 關于TC2.0版的挖地雷 1、整個游戲基于事件驅動的工作方式，這一點和windows應用程序是相通的。在程序的主 干中，不停的捕捉鼠標事件，再通過一個函數： Bool analysis(CPoint point, ClickInfor infor) 來分析鼠標事件作用在哪個對象上（游戲中的元素，比如按鈕、菜單、地雷單元格都是 作為一個對象來看待），然后把鼠標事件分配到相應的對象上。不同的對象，對鼠標事件 有自己的事件處理函數，比如菜單的事件處理函數有兩個：單擊菜單項和鼠標焦點落在 菜單項上。菜單對象能夠依據analysis傳給它的擊鍵信息，來判斷到底調用哪個事件處 理函數。（在windows編程中，其實也是給對象或控件寫事件處理函數）。 當然了，我這個程序中事件處理機制是非常基礎和簡單的，因為用的是TC2.0的編譯器， 所以很多東西要自己寫，會麻煩一些。 ………………詳細情況見包內文檔！
上傳時間： 2013-12-24
上傳用戶：佳期如夢
計算所漢語詞法分析系統ICTCLAS介紹 詞是最小的能夠獨立活動的有意義的語言成分。 但漢語是以字為基本的書寫單位，詞語之間沒有明顯的區分標記，因此，中文詞語分析是中文信息處理的基礎與關鍵。為此,我們中國科學院計算技術研究所在多年研究基礎上，耗時一年研制出了漢語詞法分析系統ICTCLAS(Institute of Computing Technology, Chinese Lexical Analysis System)，該系統的功能有：中文分詞；詞性標注；未登錄詞識別。分詞正確率高達97%以上，未登錄詞識別召回率均高于90%，其中中國人名的識別召回率接近98%處理速度為31.5Kbytes/s。ICTCLAS的特色還在于：可以根據需要輸出多個高概率結果，有多種輸出格式，支持北大詞性標注集，973專家組給出的詞性標注集合。該系統得到了專家的好評，并有多篇論文在國內外發表。 計算所漢語詞法分析系統ICTCLAS同時還提供一套完整的動態連接庫ICTCLAS.dll和相應的概率詞典,開發者可以完全忽略漢語詞法分析，直接在自己的系統中調用ICTCLAS，ICTCLAS可以根據需要輸出多個高概率的結果，輸出格式也可以定制，開發者在分詞和詞性標注的基礎上繼續上層開發。
上傳時間： 2014-01-02
上傳用戶：15736969615
FIR Filter Design（有限沖擊響應濾波器設計），包括ideal bandpass filter impulse response、Modified Bessel function、Kaiser window parameters for spectral analysis等12種FIR設計matlab源代碼
上傳時間： 2015-05-20
上傳用戶：Miyuki
matlab矩陣處理例程。A matrix processor, Matx_Proc() is developed which can be used to process and edit matrices and state space models, and perform various kind of matrix analysis in a visible way.
標簽： Matx_Proc developed processor process
上傳時間： 2015-06-23
上傳用戶：Breathe0125
§ Debussy有四個主要單元(component)，nTrace、nWave、nSchema、nState § nTrace -- Hypertext source code analysis and browse tool (為％Debussy &所開啟的主畫面) § nWave -- Waveform analysis tool (可由nTrace內開啟，或直接％nWave &開啟) § nSchema -- Hierarchy schematic generator
上傳時間： 2015-06-25
上傳用戶：13215175592
-- Booth Multiplier -- This file contains all the entity-architectures for a complete -- k-bit x k-bit Booth multiplier. -- the design makes use of the new shift operators available in the VHDL-93 std -- this design passes the Synplify synthesis check -- download from: www.fpga.com.cn & www.pld.com.cn
標簽： entity-architectures Multiplier contains complete
上傳時間： 2015-07-02
上傳用戶：2467478207
