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Original question:

TIDA-010080: Pb Switch frequency

TIDA-010080: LLC Topology

Marcel SOULIERS
Prodigy 20 points

Part Number: TIDA-010080

Hello,
I didn't get any answer concerning the resonance capacitor technology on the LLC topology, do you have any documentation or application note concerning this subject? Sometimes diodes are placed in parallel on the resonance capacitors, what are they used for?
Thanks
BR

  • 0
    TI__Expert 4840 points

    Hi Marcel,

    Diode in parallel with the resonant capacitors for over current protections.

    You can refer to the following IEEE paper:

    B. Yang, F. C. Lee and M. Concannon, "Over current protection methods for LLC resonant converter," Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03., Miami Beach, FL, USA, 2003, pp. 605-609 vol.2, doi: 10.1109/APEC.2003.1179276.

    Regards,

    Sheng-Yang Yu