FPGA-based high-order FIR filter design
標(biāo)簽： FPGA-based high-order filter design
上傳時間： 2013-08-06
上傳用戶：sssnaxie
Digital Down Converter Design based on FPGA.
標(biāo)簽： Converter Digital Design based
上傳時間： 2013-08-13
上傳用戶：CSUSheep
fpga based jpge 壓縮算法，性能不錯，
標(biāo)簽： based fpga jpge 壓縮算法
上傳時間： 2013-08-14
上傳用戶：a471778
FPGA-based link layer chip S19202 configuration
標(biāo)簽： configuration FPGA-based S19202 layer
上傳時間： 2013-08-18
上傳用戶：xsnjzljj
Run Pac-man Game Based on 8086/8088 FPGA IP Core
標(biāo)簽： Pac-man Based Game 8086
上傳時間： 2013-08-23
上傳用戶：JamesB
一篇關(guān)于CORDIC的文章A survey of CORDIC algorithms for FPGA based computers
標(biāo)簽： CORDIC algorithms computers survey
上傳時間： 2013-08-31
上傳用戶：lliuhhui
something useful for communication,source code based on FPGA
標(biāo)簽： communication something useful source
上傳時間： 2013-08-31
上傳用戶：maizezhen
On the design of an FPGA-Based OFDM modulator for IEEE 802.11a
標(biāo)簽： FPGA-Based modulator 802.11 design
上傳時間： 2013-09-02
上傳用戶：zjwangyichao
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
上傳時間： 2013-11-10
上傳用戶：1595690
為深入了解基于UC3854A控制的PFC變換器中的動力學(xué)特性，研究系統(tǒng)參數(shù)變化對變換器中分岔現(xiàn)象的影響，在建立Boost PFC變換器雙閉環(huán)數(shù)學(xué)模型的基礎(chǔ)上，用Matlab軟件對變換器中慢時標(biāo)分岔及混沌等不穩(wěn)定現(xiàn)象進(jìn)行了仿真。在對PFC變換器中慢時標(biāo)分岔現(xiàn)象仿真的基礎(chǔ)上，分析了系統(tǒng)參數(shù)變化對分岔點的影響，并進(jìn)行了仿真驗證。仿真結(jié)果清晰地顯示了輸入整流電壓的幅值變化對系統(tǒng)分岔點的影響。 Abstract: In order to better understand the dynamics characteristic of power factor correction converter based on UC3854A， and make the way that parameters change influences the bifurcation phenomena of the system clearly. The math model of the two closed loop circuits to the Boost PFC （Power Factor Correction） converter controller was built. Then， with the help of Matlab， the simulation for nonlinear phenomena such as chaos and slow-scale bifurcation in the PFC converter was made. Finally the factors that have influence to the phenomenon of bifurcation under slow-scale in PFC converter were analyzed. The simulation results clearly show the parameters change influences the bifurcation point of the system.
上傳時間： 2013-10-17
上傳用戶：杜瑩12345
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