| Title |
High Power-Density LDC Design for Ultra-Compact Electric Vehicles |
| Authors |
Tae-Won Kim ; Jae-Won Lee ; Jun-Min Kim ; Gu-Yong Kim ; Jun-Ho Kim |
| DOI |
10.6113/TKPE.2021.26.3.199 |
| Keywords |
High power-density; Low voltage DC-DC converter; Sync-buck converter; Ultra-compact electric vehicles |
| Abstract |
Ultra-compact electric vehicles have narrow space for power conversion devices. This work presents schemes to achieve the high-power density of a low-voltage DC-DC converter (LDC): simplifying a converter structure by using sync-buck topology, applying a planar inductor using PCB winding, and applying a plate-type heat sink. The heat sink is placed between two PCBs, which increases the contact surface between the PCB and the heat-dissipating device. It enables the miniaturization of the converter to improve the conditions of heat radiation. The validity of the proposed scheme is verified through the experiment using a 500 W(12 V, 41.67 A) prototype with an input voltage range from 58 V to 84 V. |