| Title |
Analysis and Design of Half-Bridge Resonant Converter for Non-Contact Battery Charger |
| Authors |
김창균(Kim, Chang-Gyun) ; 서동현(Seo, Dong-Hyeon) ; 유정식(Yu, Jeong-Sik) ; 박종후(Park, Jong-Hu) ; 조보형(Jo, Bo-Hyeong) |
| Keywords |
non-contact charger ; contactless charger ; half-bridge series resonant converter ; battery charging control |
| Abstract |
A non-contact battery charger for cellular phone is designed using half-bridge series resonant converter. This converter utilizes series resonance to reduce the undesirable effect of large leakage inductance of the detachable transformer and ZVS operation can reduce switching loss and switching noise. In this paper, analysis and design procedure of half-bridge series resonant converter with detachable transformer is presented. The input voltage is 85VAC∼270VAC, and the output voltage and current is 4.1V and 800mA, respectively. Furthermore, a method of calculating the secondary current of the transformer to control the battery charging current in the constant current charging mode is proposed. The performance of the charger is verified through experiments. |