FPGA-based high-order FIR filter design
标签: FPGA-based high-order filter design
上传时间: 2013-08-06
上传用户:sssnaxie
Digital Down Converter Design based on FPGA.
标签: Converter Digital Design based
上传时间: 2013-08-13
上传用户:CSUSheep
fpga based jpge 压缩算法,性能不错,
上传时间: 2013-08-14
上传用户:a471778
FPGA-based link layer chip S19202 configuration
标签: configuration FPGA-based S19202 layer
上传时间: 2013-08-18
上传用户:xsnjzljj
Run Pac-man Game Based on 8086/8088 FPGA IP Core
上传时间: 2013-08-23
上传用户:JamesB
一篇关于CORDIC的文章A survey of CORDIC algorithms for FPGA based computers
标签: CORDIC algorithms computers survey
上传时间: 2013-08-31
上传用户:lliuhhui
something useful for communication,source code based on FPGA
标签: communication something useful source
上传时间: 2013-08-31
上传用户:maizezhen
On the design of an FPGA-Based OFDM modulator for IEEE 802.11a
标签: FPGA-Based modulator 802.11 design
上传时间: 2013-09-02
上传用户: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.
上传时间: 2013-11-10
上传用户:1595690
为深入了解基于UC3854A控制的PFC变换器中的动力学特性,研究系统参数变化对变换器中分岔现象的影响,在建立Boost PFC变换器双闭环数学模型的基础上,用Matlab软件对变换器中慢时标分岔及混沌等不稳定现象进行了仿真。在对PFC变换器中慢时标分岔现象仿真的基础上,分析了系统参数变化对分岔点的影响,并进行了仿真验证。仿真结果清晰地显示了输入整流电压的幅值变化对系统分岔点的影响。 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.
上传时间: 2013-10-17
上传用户:杜莹12345