All Digital DC/DC Converters on FPGA

The FPGA can realize a more optimized digital controller in DC/DC converters when compare to DSPs. Based on the FPGA platform, The theoretical analysis, characteristics, simulation and design consideration are given. The methods to implement the digital DC/DC converters have been researched. The function module, state machine of digital DC/DC controller and high resolution DPWM with sigma-delta dither has been introduced. They are verified by experiments on a 20 W, 300 KHz non-isolated synchronous buck converters, the performance can fullfil the requirements totally.