| Title |
A Study on 650Watt High power efficiency Power Supply Unit design for Server PC |
| Authors |
Joung-Hwan Bae ; Jong-Mu Lee ; Chung-Yuen Won |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2017.31.6.079 |
| Keywords |
Bootstrap Circuit ; Charge Pump ; Bipolar Gate Drive ; Negative Supplying Voltage |
| Abstract |
This paper proposed highly efficiency PSU(Power Supply Unit) using dual boost PFC circuit, LLC resonant converter, and Buck converter. In order to minimize the power conversion loss, PFC circuit selects Bridgeless PFC Dual Boost type using two switching elements and two SiC diodes and minimizes loss by using synchronous rectifier switching method. Using these power topologies helped PSU to meet up to 92% power efficiency and it made a low current and voltage ripple. Furthermore, the proposed method could stably supply the 3.3V and 5V from 12V for network system. In this paper the converter design and loss reduction method were proposed and the whole circuit had designed into 650W rated power. The theories and power efficiency of PSU were confirmed by simulation and experiment. |