Phase-Shifted Full-Bridge Converter with Capacitor-Diode-Diode Clamp Circuit Using New Switching Control Method
Year: 2026
Type: article
Abstract: This study proposes a novel control method to address the main issues of a phase-shifted full-bridge (PSFB) converter with a capacitor – diode – diode (CDD) clamp circuit applied at the secondary rectifier stage. The conventional PSFB converter employing a CDD clamp circuit suffers several drawbacks, such as a large ripple current flowing through the output capacitor under low-voltage-gain conditions, increased switching and conduction losses on the primary side, and the need to design a small magnetizing inductance to achieve zero-voltage switching of the lagging-leg switches. To overcome these limitations, this study introduces a new control method that combines pulse-width modulation and pulse-frequency modulation schemes. The proposed method is experimentally, validated using a 1.6 kW prototype designed fro an input voltage of 240 – 410 V and an output specification of 48 V/33.4 A.
Authors: Hyeon-Woo Yu, Hyeon-Woo Jeong, Cheon-Yong Lim
Language: English
Topic: Advanced DC-DC Converters
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7203696896