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  • UCC256402: Frequency Jitter and Design Calculator questions from adapted PMP21683

    Part Number: UCC256402 Other Parts Discussed in Thread: PMP21683 , , UCC256302 , UCC256403 Tool/software: Hello, We are working with a redesigned version of the 550W EVM PMP21683, it has been updated to use the UCC256402 instead of the UCC256302. We…
    • Answered

  • PMP21683: What is the voltage seen at Vb1 point?

    Resolved
    Part Number: PMP21683 Tool/software: Hi Experts, Asking your assistance on this query: Can you please help us determine the correct voltage reading at Vb1 pin from PMP21683 design? https://www.ti.com/lit/df/tidrzl6/tidrzl6.pdf Thank you…
    • Resolved
    • Answered

  • PMP21683: Lr inductance

    Resolved
    Part Number: PMP21683 Hi TI experts , am trying to copy PMP21683 , already get the LLC X'former spec which is not integrated with additional leakage; can you advise me the inductance of RLTI-1304 of that external Lr ? thanks Norman
    • Resolved

  • PMP21683: burst mode abnormal peak current with Xformer audible noise

    Part Number: PMP21683 Other Parts Discussed in Thread: TL431 , UCC256302 Hi , I modified PMP21683 48V 500W design to 24V version ; LLC Xformer turns ration from original 29:3:7:7:2 to 32:3:4:4:2 , Primary inductance stay 230uH without change , additional…
    • Answered

  • PMP21683: p/n of the Core and bobbin for that 250uH LLC Transformer ( T100)

    Resolved
    Part Number: PMP21683 Hi , do you know the p/n of the Core ( EFDxx or EExx or ERxxx....) and bobbin ( 20 pins with pin pitch and space ) for that 250uH LLC Transformer ( T100) , since I had a PCB built by this reference design gerber , assembly need…
    • Resolved

  • PMP21683: Design parameters of transformer in power reference design of TI

    TI Thinks Resolved
    Other Parts Discussed in Thread: PMP21683 Hi,TI Engineer , a reference design of power supply, The digital number is:PMP21683, the transformer of circuit encountered problems. The BOM table of components mentioned the parameters of the transformer, T100…

  • PMP21683: Design parameters of transformer in power reference design of TI

    TI Thinks Resolved
    Part Number: PMP21683 Hi,TI Engineer , a reference design of power supply, The digital number is:PMP21683, the transformer of circuit encountered problems. The BOM table of components mentioned the parameters of the transformer, T100, 250uH, RLTI-1303…
    • Answered

  • UCC256404: Input current oscillations when controller changed to UCC256404 (add controller heating)

    Resolved
    Part Number: UCC256404 Other Parts Discussed in Thread: PMP21683 , , UCC256302 , UCC256402 Tool/software: We are updating the controller (UCC 25630x to UCC256404) on a TI LLC reference design (PMP21683) and are following the TI migration paper (SLUA 996A…
    • Resolved

  • RE: POE Power

    Hi Vakhtang, Sorry for the delay here. I'm not too familiar with all the TI Designs since these are done by many engineers within TI across different end equipment. I imagine these fulfill specific input requirements for a broad range of end equipments…
    • Answered

  • Topology selection

    Resolved
    Other Parts Discussed in Thread: TIDA-010080 , PMP21683 , UCC256403 , UCC256404 , UCC256302 , UCC28951 , UCC28950 Hi Team My Design inputs: input voltage range 1:- Vin min:316 Vdc, Vin nominal:587Vdc, Vin Max: 815Vdc input voltage range 2:- Vin…
    • Resolved

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