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.
標(biāo)簽： EMI 開關(guān)電源 英文
上傳時(shí)間： 2013-11-16
上傳用戶：萍水相逢
算法ebook(10部算法經(jīng)典著作的合集) 算法ebook> 10部算法經(jīng)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(biāo)簽： ebook Fundamentals Structures Ellis
上傳時(shí)間： 2015-04-04
上傳用戶：tfyt
TC 2.0 挖地雷 關(guān)于TC2.0版的挖地雷 1、整個(gè)游戲基于事件驅(qū)動(dòng)的工作方式，這一點(diǎn)和windows應(yīng)用程序是相通的。在程序的主 干中，不停的捕捉鼠標(biāo)事件，再通過一個(gè)函數(shù)： Bool ANALYSIS(CPoint point, ClickInfor infor) 來(lái)分析鼠標(biāo)事件作用在哪個(gè)對(duì)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(gè)對(duì)象來(lái)看待），然后把鼠標(biāo)事件分配到相應(yīng)的對(duì)象上。不同的對(duì)象，對(duì)鼠標(biāo)事件 有自己的事件處理函數(shù)，比如菜單的事件處理函數(shù)有兩個(gè)：?jiǎn)螕舨藛雾?xiàng)和鼠標(biāo)焦點(diǎn)落在 菜單項(xiàng)上。菜單對(duì)象能夠依據(jù)ANALYSIS傳給它的擊鍵信息，來(lái)判斷到底調(diào)用哪個(gè)事件處 理函數(shù)。（在windows編程中，其實(shí)也是給對(duì)象或控件寫事件處理函數(shù)）。 當(dāng)然了，我這個(gè)程序中事件處理機(jī)制是非?；A(chǔ)和簡(jiǎn)單的，因?yàn)橛玫氖荰C2.0的編譯器， 所以很多東西要自己寫，會(huì)麻煩一些。 ………………詳細(xì)情況見包內(nèi)文檔！
標(biāo)簽： 2.0 TC 事件驅(qū)動(dòng) 工作方式
上傳時(shí)間： 2013-12-24
上傳用戶：佳期如夢(mèng)
計(jì)算所漢語(yǔ)詞法分析系統(tǒng)ICTCLAS介紹 詞是最小的能夠獨(dú)立活動(dòng)的有意義的語(yǔ)言成分。 但漢語(yǔ)是以字為基本的書寫單位，詞語(yǔ)之間沒有明顯的區(qū)分標(biāo)記，因此，中文詞語(yǔ)分析是中文信息處理的基礎(chǔ)與關(guān)鍵。為此,我們中國(guó)科學(xué)院計(jì)算技術(shù)研究所在多年研究基礎(chǔ)上，耗時(shí)一年研制出了漢語(yǔ)詞法分析系統(tǒng)ICTCLAS(Institute of Computing Technology, Chinese Lexical ANALYSIS System)，該系統(tǒng)的功能有：中文分詞；詞性標(biāo)注；未登錄詞識(shí)別。分詞正確率高達(dá)97%以上，未登錄詞識(shí)別召回率均高于90%，其中中國(guó)人名的識(shí)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(jù)需要輸出多個(gè)高概率結(jié)果，有多種輸出格式，支持北大詞性標(biāo)注集，973專家組給出的詞性標(biāo)注集合。該系統(tǒng)得到了專家的好評(píng)，并有多篇論文在國(guó)內(nèi)外發(fā)表。 計(jì)算所漢語(yǔ)詞法分析系統(tǒng)ICTCLAS同時(shí)還提供一套完整的動(dòng)態(tài)連接庫(kù)ICTCLAS.dll和相應(yīng)的概率詞典,開發(fā)者可以完全忽略漢語(yǔ)詞法分析，直接在自己的系統(tǒng)中調(diào)用ICTCLAS，ICTCLAS可以根據(jù)需要輸出多個(gè)高概率的結(jié)果，輸出格式也可以定制，開發(fā)者在分詞和詞性標(biāo)注的基礎(chǔ)上繼續(xù)上層開發(fā)。
標(biāo)簽： ICTCLAS 漢語(yǔ) 分 計(jì)算
上傳時(shí)間： 2014-01-02
上傳用戶：15736969615
FIR Filter Design（有限沖擊響應(yīng)濾波器設(shè)計(jì)），包括ideal bandpass filter impulse response、Modified Bessel function、Kaiser window parameters for spectral ANALYSIS等12種FIR設(shè)計(jì)matlab源代碼
標(biāo)簽： Design Filter FIR 響應(yīng)濾波器
上傳時(shí)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(biāo)簽： Matx_Proc developed processor process
上傳時(shí)間： 2015-06-23
上傳用戶：Breathe0125
§ Debussy有四個(gè)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(nèi)開啟，或直接％nWave &開啟) § nSchema -- Hierarchy schematic generator
上傳時(shí)間： 2015-06-25
上傳用戶：13215175592
Wavelets have widely been used in many signal and image processing applications. In this paper, a new serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline architecture to compress and decompress images. The real filter calculation over 4 · 4 window blocks is done using a tree of carry save adders to ensure the high speed processing required for many applications. The details of implementing both compressor and decompressor sub-systems are given. The primarily ANALYSIS reveals that the proposed architecture, implemented using current VLSI technologies, can process a video stream in real time.
標(biāo)簽： applications processing Wavelets widely
上傳時(shí)間： 2014-01-22
上傳用戶：hongmo
This was the public transportation inquiry system software engineering design documents, including the demand ANALYSIS, the outline design, the contact surface design and so on a series of designs documents, made the comprehensive ANALYSIS to the public transportation systems engineering to design ,Java,software engineering
標(biāo)簽： transportation engineering documents including
上傳時(shí)間： 2015-08-15
上傳用戶：lixinxiang
This was the public transportation inquiry system software engineering design documents, including the demand ANALYSIS, the outline design, the contact surface design and so on a series of designs documents, made the comprehensive ANALYSIS to the public transportation systems engineering to design ,Java,software
標(biāo)簽： transportation engineering documents including
上傳時(shí)間： 2013-12-26
上傳用戶：Zxcvbnm
蟲蟲下載站版權(quán)所有 京ICP備2021023401號(hào)-1
