SLUAAS5A November 2025 – June 2026 LMG3427R030 , LMG3427R050
This document was translated from a simplified Chinese source. (ZHCAG12A)
This article describes the ZCD implementation principle of the LMG3427 and its application in interleaved triangular current mode (TCM) PFCs. It presents the application timing for interleaved TCM PFCs based on the LMG3427. It also analyzes the problematic waveforms and timings of ZCD timing issues caused by inter-phase capacitance in applications. Finally, it provides related design recommendations to avoid LMG3427 ZCD timing issues caused by inter-phase capacitance in TCM PFC applications.