Implement of High Efficiency Achievement Algorithm of LDC for xEV based on GaN HEMT

This paper presents a method to improve the efficiency of LDC for xEV. First, implement of high efficiency hardware using GaN HEMT, which is the next generation semiconductor, and propose and apply an active parallel control algorithm to improve light and medium load efficiency. The proposed LDC control method is explained in detail by operation mode, and a 1.2kW class prototype LDC is implemented to verify the superiority of the algorithm.