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  • RE: UC2854B: UC2854B details needed

    Hi Seshaiah, Thank you for the query on UC2854. Please refer page-3 for the following link for the difference: https://www.ti.com/lit/ds/symlink/uc3854.pdf? DDW refers to the package also mentioned in page3. Regards, Harish
    • Answered

  • RE: UC3854: looking for PFC controller

    Resolved
    Dear Harish, Thank you for your response. The UC2854 was added as one of the candidates because it can be used in the range of 0-85C. （Not enough for 100C...) Can UC2854, UCC28180 and UCC28019 be used with 4000W output? By the way, in the current concept…

  • Re: UC2854 3 Phase PFC

    Daniel, I would have to see the complete schematic to be able to start to analysis the problem. John

  • A few question regarding UC2854 PFC

    We are designing a 220VAC input 10KW power supply. Front end is a 2854 based PFC stage. I put a 75 ohm to it and raises input from 0VAC, the PFC starts to work from 20VAC, boosts to 200VDC or so, at 30VAC it regulates at 400VDC, PF 0.982. However when…

  • UC2854A: Maximum Multiplier Current

    TI Thinks Resolved
    Part Number: UC2854A Other Parts Discussed in Thread: UC2854 In the original version of the IC (UC2854) Multiplier current was limited to 3.75V/RSET. In this version of the IC, the datasheet indicates that maximum multiplier current is limited to 2xIAC…
    • Answered

  • RE: UC2854B: ESD Rating

    Resolved
    Hello, This device should have similar ESD ratings compared to the uc2854. According to the UC2854 data sheet section 7.2, page: HBM = +/- 2500V CDM = +/- 1500V Regards,

  • UCC2818: IAC pin voltage

    TI Thinks Resolved
    Part Number: UCC2818 Other Parts Discussed in Thread: , , UC2854 , UC2854B , UC2854A , UC3854A , Hi team, Customer has a question regarding the UCC2818 (and its equivalents like UCC2818-EP and UCC2818A-Q1): What is the voltage at the IAC input? This pin needs…
    • Answered

  • BUCK PFC

    Resolved
    Other Parts Discussed in Thread: UCC28070 , UCC29910A , UCC28180 , UC2854 Hi all, I have to design 600W buck PFC circuit. Please suggest us IC/ Design/ circuit to meet below specifications 1. Vin: 90- 265 Vac, 1 phase , 50 Hz 2. Vout: Any value between 60…
    • Resolved

  • UCC3817: UCC3817

    Part Number: UCC3817 Other Parts Discussed in Thread: UC2854 , , UCC28180 My question or observation concerns the PFC part differences between the ucc3817 vs. UC2854 units The internal multiplier output (Imo) is hard-connected either to the inverting or non…
    • Answered

  • RE: which topology is recommendable for an adjustable 0-500 V power supply?

    Resolved
    thank you, my problem was solved. what about for UC2854, UCC2818 and UCC28070 in my application?

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