Optimizing Digital PWM Techniques for DC-DC Converters in Software-Defined Radios (SDRs): A Robust Architectural Approach
Keywords:
Digital Pulse Width Modulator, DC-DC converter, FPGA, Software-Defined RadiosAbstract
The rising demand for Software-Defined Radios (SDRs) necessitates innovative solutions for efficient power management. This paper explores the use of an FPGA-based Digital Pulse Width Modulation (DPWM) technique to enhance the performance of DC-DC converters in SDRs. The primary objective is to develop and assess the effectiveness of this FPGA-based DPWM approach in improving power conversion efficiency, adaptability, and overall SDR performance. Our method involves creating and implementing an FPGA-based PWM control strategy, synthesizing the DPWM architecture through Verilog and Xilinx ISE Design Suite 14.1. Subsequently, we integrate this PWM technique into SDR DC-DC converters and conduct a thorough evaluation using MATLAB Simulink and a digital storage oscilloscope. The DPWM architecture achieved an impressive 189.17 MHz operating frequency, resulting in significant enhancements in power conversion efficiency, dynamic power demand responsiveness, and notable reductions in power losses. In conclusion, the integration of FPGA-based PWM in SDR DC-DC converters represents a promising solution to enhance power management. It holds the potential to advance SDR technology by increasing efficiency and adaptability to address the evolving demands of wireless communication systems.
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