Abstract
Abstract Recently, many electronic product designers have a hallenge on the requirement of the market.There are a lot of roblems including low cost of electronic products, shortening products design cycle, and higher performance, generality and high reliability. The technical staff was asked to use more effective method for solving these problems. According to electronic technology, most designers use distributed components and the parameter type of power supply to design products. They also need complicated parameter to compute and long working period time to research and develop the electronic products. In addition, the competitive market and new technology have brought the hope for the wide electronic technical people; a lot of company has already to build the reliable integrated circuit of power electronic module. It is convenient that utilizing dc/dc converter for obtaining smaller size, connect easily and reliable function. System designers choose proper dc/dc power module to obtain simple circuits and debug correctly. Therefore, it can reduce design cycle of products, increase the product reliability and enhance total design level. Because micro electronic circuits’ technique develops very quickly,there are a lot of VLSI circuits expanding so fast. The power supply is becoming more and more important in the electronic system. To make it smaller and lighter is the trend of the design direction. In today's market, engineers must take a design from engineering through manufacturing with shorter design cycles and faster time to market. To be successful, you need a set of powerful,intuitive, and integrated tools are the main stream for development modern electronic product. OrCAD 10.5 personal productivity tools have a long history of addressing these demands-and more. Designed to boost productivity for smaller design teams and individual printed circuit board (PCB) designers, OrCAD PCB design suites grow with your needs and technology challenges. The powerful, tightly integrated PCB design suites include design capture, librarian tools, a PCB editor, an auto/interactive router, and optional analog and mixed-signal simulator. The affordable cheaper, high-performance OrCAD product line is easily scalable with the full complement of Cadence® Allegro® PCB solutions. The OrCAD product line is owned by Cadence Design Systems, Inc. and supported by a worldwide network of Cadence Channel Partners. Based on above description, we also test and verify the simulation results and measurement results. It can reduce a lot of time to check the function work in simulation tool before in PCB work was done. In fact, we can use PSpice to simulate different parameters with the LED driver module,and understand how to design the correct results, such as constant current and output voltage. In this thesis, we believe LED will be substituted for other light sources in backlight, and will be applied in more optical products with dc/dc converter.