| Title |
Design of LLC Resonant Converter having Enhanced Load Range for Communication Power |
| Authors |
Byong-Chul So ; Ki-Bong Seo ; Dong-Hoo Lee ; Ho-Chul Jung ; Soon-Sang Hwang ; Hag-Wone Kim ; Kwan-Yuhl Cho ; Byung-Kuk Lim |
| DOI |
10.6113/TKPE/2012.17.5.461 |
| Keywords |
LLC converter; frequcy-duty control; light load condition |
| Abstract |
This paper deals with LLC resonant converter for communication power supply. Generally, the load range of communication power is very wide. However, voltage conversion ratio of LLC converter is highly dependent of load condition. So, it is not easy to design of robust power supply along with the wide load condition. Especially, it is not possible to meet the required low voltage conversion ratio for low output voltage with high input voltage under the light load condition. To solve this problem, in this paper, a new duty control interlinked with operational frequency has been proposed. To prove the usefulness of the proposed control method, the simulation and experiments were carried out. The simulation and experimental results show the usefulness of the proposed control method. |