The paper investigates enhancing Power Line Communication (PLC) by improving Power and Signal Dual Modulation (PSDM) to raise data transmission rates. Presently, PSDM is confined to low bit rates using low switching frequencies (SFs), sufficient for latency-tolerant applications but not for high-speed data transfer. To overcome this, the study suggests increasing SFs above 1 MHz to achieve bit rates over 1 Mbit/s, a requirement for protocols like the CAN bus. However, this leads to greater switching losses and electromagnetic interference (EMI) with traditional hard-switching converters. The paper proposes using Wide Bandgap (WBG) devices and soft-switching Quasi-Resonant Converters (QRCs) with Zero Voltage-Switching (ZVS) topologies to maintain high SFs without sacrificing efficiency. The goal is to develop PSDM converters that support high-speed communication with reduced latency, aligning with high-speed data protocols and mitigating EMI and efficiency issues.
