Applying an FPGA_based SR Control Technique to the Forward Converter to Upgrade Transient Load Response

Field programmable gate arrays (FPGA) based control of synchronous rectification (SR) is addressed herein and applied to the conventional forward converter. In designing such an FPGA-based SR control algorithm, the energy fed back from the secondary side to the primary side of the main transformer and then to the DC link is considered to enhance transient load response. At the same time, the required dead-time zone between switches is properly tuned to get the maximum efficiency under the condition that this converter operates at full load. Eventually, the differences in transient load response between with and without the proposed FPGA-based SR control technique are demonstrated via some experimental results.