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Technical Dialogue

Circuits and Systems

D17.2 - Accurate Modeling of LLC Resonant Converters with Enhanced Analytical Approach Considering of Parasitic Capacitance

Thursday, March 20, 2025
11:30 AM – 1:30 PM ET
Location: Level One, Hall A3
This study introduces a novel analytical model designed to enhance the accuracy of key parameter predictions in LLC resonant converters. The model addresses limitations in existing approaches that often lose accuracy with varying frequencies and load conditions and fail to account for parasitic capacitance. By incorporating the parasitic capacitance of power devices, the model more accurately predicts current and voltage waveforms, voltage gain, and the necessary deadtime for achieving soft switching. Validation through simulations across various operating conditions shows a significant improvement in prediction accuracy, reducing errors in gain prediction and ZVS deadtime calculation. This improved accuracy has the potential to lead to more efficient and reliable LLC converter designs.