Study and Implementation of a 240 W High-Performance PC Power Supply
碩士 === 國立臺灣科技大學 === 電子工程系 === 102 === In this thesis, a 240-watt power supply for small form-factor personal computer is designed for satisfying the Engergy Star requirenents. The output specifications of the developed power supply are: +12 V/20 A (Vmain), and 12 V/1.3 A (Vsb). Boundary conduction m...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2014
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/78590984437351493837 |
| Summary: | 碩士 === 國立臺灣科技大學 === 電子工程系 === 102 === In this thesis, a 240-watt power supply for small form-factor personal computer is designed for satisfying the Engergy Star requirenents. The output specifications of the developed power supply are: +12 V/20 A (Vmain), and 12 V/1.3 A (Vsb). Boundary conduction mode power factor corrector (BCM PFC) is adopted as the pre-regulator to enhance the conversion efficiency, raise input power factor and reduce input current harmonics. The DC-DC converter is implemented by using a half-bridge series resonant converter (SRC) to provide the 12-V output. The inherent zero-voltage switching feature reduces the switching loss of primary power switches. Synchronous rectification (SR) technology is used to eliminate the secondary conduction losses. A flyback converter is designed to provide standby and auxiliary powers. Experimental results of a prototype circuit are shown to verify the feasibility of the studied power supply system. Both the conversion efficiency and power factory meet the requirements of Energy Star specifications.
|
|---|