Operation Mode Analysis and Peak Gain Approximation of the LLC Resonant Converter

By Xiang Fang, Haibing Hu, Z. John Shen, Issa Batarseh. IEEE transactions on power electronics, 2012

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A Center Point Iteration MPPT Method With Application on the Frequency-Modulated LLC Microinverter (2014, background): “The LLC converter, with the advantages given as follows [21], [22], becomes an attractive topology as the first stage of the two-stage microinverter: 1) high switching frequency while maintaining high efficiency; 2) wide load range, high gain range, and wide input voltage range; 3) transformer leaka”
Optimal Design Methodology for LLC Resonant Converter in Battery Charging Applications Based on Time-Weighted Average Efficiency (2015, neutral): “4 [31], [35].”
Design Methodology of LLC Resonant Converters for Electric Vehicle Battery Chargers (2014, methodology): “additional diode reverse recovery losses compared with the region below resonance [19].”
LLC resonant converter topologies and industrial applications — A review (2020, background): “The LLC resonant converter is mainly responsible for electrical isolation, high energy density, and soft-switching functions([21]), contributing to an increased product safety, low EMI and harmonic pollution, reduced product weight, and high efficiency.”
Modified High-Efficiency LLC Converters With Two Split Resonant Branches for Wide Input-Voltage Range Applications (2018, methodology): “Although the analysis methods mentioned in [25]–[28] feature high accuracy, the FHA analysis method is simpler and more straightforward to analyze the LLC converters [14].”