Tapped Inductor in Cuk-Buck 2

Support Communities Switchmode Power Supply Tapped Inductor in Cuk-Buck 2

This topic contains 4 replies, has 3 voices, and was last updated by  RobertR 4 months, 3 weeks ago.

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  • #38422

    Sahil Chawla
    Participant

    Hi there

    I am trying to reproduce the recently popularized Cuk-Buck 2 topology in PSIM and facing a little problem with the tapped inductor model. Can anyone please guide me a little. Moreover, I believe Albert was also working on this topology, it would be a great help if you can share your simulation file.

    Thanks
    Sahil Chawla

  • #38476

    Albert Dunford
    Participant

    Hi Sahil,

    2 circuits attached, one cuk-buck2 has deadtime and some caps parallel to the switches to try and get some ZVS and ZVC, these caps are not really well thought out and need to tuned.

    The other cuk-buck 2 is a straight reproduction of his circuit with component values visible from these videos.

    https://youtu.be/2O7Q6vhp7wM

    https://youtu.be/Wp9WsqAyAKQ- you can see the component values in this video

    Dr. Cuk claims a number of things, like 99% efficiency and fast transient response. I don’t see how any of these are true.

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  • #38516

    Sahil Chawla
    Participant

    Hi Albert

    Thank you for your reply.

    I am sorry to inform you that I have PSIM version 9.0. Can you please save these schematics to the previous version and attach again?

    Thanking in advance.

    Sahil Chawla

  • #38794

    Albert Dunford
    Participant

    Hi Sahil,

    Please see the attached. Also, if you are a student your instructor can request free teaching licenses:

    https://powersimtech.com/academia/educational-licensing/

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  • #40892

    RobertR
    Participant

    99% efficiency sounds wonderful but not practical.

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