Publication Date


Document Type


Committee Members

Andrew Hsu (Other), Marian Kazimierczuk (Advisor), Kuldip Rattan (Committee Member), Ronald Riechers (Committee Member), Kefu Xue (Other)

Degree Name

Master of Science in Engineering (MSEgr)


The objective of this research is to analyze, design and simulate a two-switch forward pulse-width modulated (PWM) DC-DC converter. The Forward PWM DC-DC converter is originally derived from the buck converter by the addition of a transformer. The transformer is mainly used as a safety feature to electrically isolate input and output stages of the power converter and also to scale the voltage or current. The steady-state analysis is presented for the two-switch PWM DC-DC forward converter in continuous conduction mode (CCM). Based on the analysis, the design equations for two-switch PWM forward DC-DC converter are derived. A design example is given. Furthermore, a detailed procedure to design a high-frequency (HF) two-winding power transformer is presented for CCM. The 60 W/ 20 V two-switch forward converter is designed for universal laptop adapter. Simulation results are provided to validate the theoretical analysis.

Page Count


Department or Program

Department of Electrical Engineering

Year Degree Awarded