Dual Active-Clamped Step-Up Dc-Dc Converter With Reduced Voltage Stress For Low-Dc Sources
This paper proposes a dual active-clamped step-up DC-DC converter. The proposed converter has the dual active
clamping circuit with parallel-connected two transformers. Compared to the previous active-clamped step-up DC-DC
converters, the voltage stresses of the semiconductor devices can be reduced in the proposed converter. The proposed
converter has low switching power losses and high power efficiency. The use of parallel-connected two transformers gives a
low-profile design for the step-up DC-DC converter for low-DC sources. The performance of the proposed converter is
verified from 350 W(350 V / 1 A) experimental prototype circuit for 50 V battery.