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  • UC2854B: Looking for PFM controller product like UC2854B that has PSpice or Simplis model available

    Resolved
    Part Number: UC2854B Other Parts Discussed in Thread: UCC28180 , UCC28056 , UCC28070A , UCC28063A , UCC28064A , UCC28065 Hi experts I see that no behavioral models are available for the UC2854B. Can someone recommend some similar newer devices with equivalent…
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    • Answered

  • UC2854B: UC2854B Current Error Amplifier

    Resolved
    Part Number: UC2854B Other Parts Discussed in Thread: UCC3818 , UCC28070 CURRENT ERROR AMPLIFIER This error amplifier configuration conventionally has a resistor from the inverting input to common, and a resistor from the multiplier output to a negative…
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  • UC2854B-EP: Maximum applicable voltage on VAO

    TI Thinks Resolved
    Part Number: UC2854B-EP Other Parts Discussed in Thread: UC2854B , , UC2845 Hi, I am currently designing a PFC with a boost topology. In my design, it is preferable to use an external op amp to do the voltage loop function, The output of this external op…

  • UC2854B-EP: UC2854B-EP vs UCC2818-EP

    TI Thinks Resolved
    Part Number: UC2854B-EP Other Parts Discussed in Thread: UCC2818-EP , Hi, The UC2854B-EP has the same functional bloc as UCC2818-EP, better current amplier bandwidth, low gain dispersion of multiplier but requiere more supply current and it is more expensive…

  • UC2854B-EP: Multiplier Gain and temperature sensitivity

    TI Thinks Resolved
    Part Number: UC2854B-EP Other Parts Discussed in Thread: UC2854B , Regarding a 400Hz 115Vac input PFC module for military avionics application: In doing higher temperature testing (baseplate > 70 deg C), the THD begins to increase from ~3% to ~10% (seems…
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  • UC2854B: ESD Rating

    Resolved
    Part Number: UC2854B Other Parts Discussed in Thread: UC2854 Hi Team, Good day. Could you help us provide the HBM and ESD Rating of UC2854BDWTR? Thank you in advance for the help. Regards, Carlo
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  • UC2854B: UC2854B: Can UC2854B be used with both of AC and DC input?

    Resolved
    Part Number: UC2854B Hi, I want to design PFC using UC2854B under the following conditions.  Input : AC85V-265V, DC125V(-10%, +15%)  Output : DC390V 200W  Efficiency : 90%  Switching frequency : 65kHz In this case, can UC2854B be used with both of AC and DC…
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  • UC2854B: PF was low

    Part Number: UC2854B I cannot get the ideal PF, I designed a 3kilowat PFC, but when I added load to 1KW, the PF was 0.94.
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  • UC2854B: CT pin Max voltage

    Resolved
    Part Number: UC2854B Other Parts Discussed in Thread: UCC2818 What is the ABS max voltage allowed on the CT pin (for cases where there is an external sync pulse injection)
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    • Answered

  • UC2854B-EP: Enable threshold voltage

    Resolved
    Part Number: UC2854B-EP Hi TI-team My customer is using UC2854B-EP. Normally, I think ENA operates at 2.35V or more. However, there is a sample that operates with ENA around 1.9V. VCC at this time is about 10.5V. Vref also outputs 7.5V. Why does the…
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