Abstract：The telecommunication power supply applied in 5G base stations can save energy consumption by

reducing the output voltage when the equipment works in standby state. Nevertheless，frequent and rapid output

voltage regulating of the converters is challenging. To solve this problem，the concept of partial power conversion

was adopted in the design of power supply converters. A partial voltage regulating circuit was added at the output

side of the converter，and fast output voltage regulating was realized with control of outer voltage loop，inner

current loop，load current feedforward and output voltage feedforward loop. At the same time，higher energy

conversion efficiency was guaranteed. A 1 kW DC/DC converter was built and verified the effectiveness of the

proposed topology and control strategy .

      Key words：partial power conversion；DC/DC converter；voltage regulating；dynamic characteristics；efficiency