Lecture 9.2: LLC Resonant Converter Analysis

I wanted to take a deep dive (not even that deep) into the LLC to hopefully explain what's going on in the different operating modes of this converter. Turns out there was more to cover than what I was expected (and stuff that probably needs to be covered in the future). 0:00 - Intro 1:10 - Full Bridge LLC 5:55 - Conversion Ratio 15:40 - Two resonant frequencies 23:20 - Gain at f1 27:30 - Gain at f0 29:30 - Bode Plot Sketch 34:30 - Soft Switching Regions 41:44 - Current at f0 51:30 - Current above f0 1:00:00 - Diode Rectifier Transitions 1:11:10 - Current below f0 1:18:05 - Current at f1 1:26:40 - Current below f1 1:34:30 - Outro CORRECTIONS: 4:28 - I forgot to include the factor of n in the average output current, so I included it in editing 25:31 - I incorrectly used a + instead of a - and edited after the fact 40:55 - I mixed up the ZVS and ZCS regions based on load resistance and edited it for clarity. 1:04:00 - I forgot parentheses around Vg - v_c(t) here. v_Lm(t) = (Vg - v_c(t))*(Lm/(Lm+Lr)) References: Fundamentals of Power Electronics - Erickson and Maksimovic https://www.infineon.com/dgdl/Applica... https://www.infineon.com/dgdl/an-1160... https://www.st.com/resource/en/applic... https://www.onsemi.com/pub/Collateral... https://ietresearch.onlinelibrary.wil... These are a little less helpful https://www.psma.com/sites/default/fi... This is some really old school markup https://www.ti.com/lit/an/slua159/slu...