Efficiency Analysis and Design for High Current Low Voltage Multi-phase Buck Converters

• Main Authors: Wen-Hsiung Chang, 張文雄
• Other Authors: Yuang-Shung Lee
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/62238946168644263907

碩士 === 輔仁大學 === 電子工程學系 === 93 === Low voltage and high power consumption dc-dc converter is popular in the future. The challenge of power dissipation and thermal design is difficult. The proposed high current low voltage multi-phase buck converter can significantly improve efficient. Simulation and experiment results show the advantage of the converter in this paper. In order to find out the several large of power loss for further research and analysis, choosing the best power component in terms of performance, using zero voltage switching for power mode, and adopted the best circuit board print layout will lessen power consumption from 22W to 12W. Increasing efficiency from 82.24% upgrade to 89.02%. Thus, it will allow us to replace the 180W mobile computer adapter with a 150W. This will greatly reduce the cost of heat sink. Nevertheless the main goal of reducing product cost and the reduction in the size and weight of the notebook computer, while conforming to surface temperature and other requirements, has been reached.