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1.2KW LLC Reference design

Aneesh TS
Expert 1735 points
Other Parts Discussed in Thread: UCC27517A, UCC256403, UCC28951, PMP

Dear TI Experts,

Could you please suggest me 1.2KW LLC Reference design from TI?  .

My specification as follows

Vin:400V

Vout:60V/20A

Topology: LLC resonant converter

If there is no direct reference design  available kindly suggest something close to above specs. 

Regards

Aneesh

  • 0
    TI__Expert 8210 points

    Aneesh


    We don't have a reference design to 1.2kW, but our latest half bridge resonant LLC controller UCC256403 can meet your requirements.  The internal gate driver may be a bit undersized for the MOSFETs used, so if you need additional gate drive strength we recommend using UCC27517A.  You configure it for the high side drive the following way

    • VDD: connect to HB pin
    • GND: connect to HS pin
    • IN+: connect to HO pin
    • IN-: connect to HS pin
    • OUT: connect to high side MOSFET gate resistance

    Alternatively our PSFB controller UCC28951 will work well in this power level.  This device also does not have a reference design close to your requirements, but the full bridge topology and zero voltage switching it achieves allows it to get high performance.

    Best Regards,

    Eric

  • 0 in reply to Eric Faraci
    Expert 1735 points

    Dear Eric,

    Thanks for your feedback.

    We have solution with PSFB Topology. we are now planning to move for LLC topology since there is less no of switches and output inductor also nor required. Let me know If TI have any PMP design with LLC for 1.2KW.

    Regards

    Aneesh

  • 0 in reply to Aneesh TS
    TI__Expert 8210 points

    Aneesh

    I'm sorry but we do not have a 1.2kW reference design that is close to your specification.

    Below are some tools that you can use to design UCC256403 to meet your requirement though.

    Best Regards,

    Eric