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  • UCC3803: Diference between UCC2803 and UCC3803

    Resolved
    Part Number: UCC3803 Other Parts Discussed in Thread: UCC2803 , I am designing a DC-DC Boost voltage converter to upscale 9vdc to 200vdc to output less than 20mA @ 200vdc. Which part would you recommend? the UCC3803 was recommended for this application…
    • Resolved
    • Answered

  • UCC3803: Current Sense Operation

    Resolved
    Part Number: UCC3803 Other Parts Discussed in Thread: UCC2803 For the Current Sense limiter, there is a comparator that compares the CS voltage with 1.5 Volts according to the schematic in the CSS2803 datasheet. Thus, is it the case that current limiting…
    • Resolved
    • Answered

  • UCC2803: Difference between UCC2803 and UCC3803

    Resolved
    Part Number: UCC2803 Other Parts Discussed in Thread: UCC3803 I am designing a DC-DC Boost voltage converter to upscale 9vdc to 200vdc to output less than 20mA @ 200vdc. Which part would you recommend? the UCC3803 was recommended for this application…
    • Resolved
    • Answered

  • UCC3803: UCC3803 rectifier diode stress management / snubber design

    Resolved
    Part Number: UCC3803 Tool/software: Hi, I'm implementing a similar circuit designed in webench.ti.com with UCC3803. My SMPS is flyback topology, 24V input and 150V output and 75W rating. The design is working up to 25W loading. But due to custom transformer…
    • Resolved

  • UCC3803: I want to simulate UCC3803 design

    TI Thinks Resolved
    Part Number: UCC3803 Tool/software: Hi , I am trying to simulate the UCC3803 design, but I am unable to do it. The UCC3803 is not generating a switching output. Please help us simulate this design. UCC3803.TSC
    • Answered

  • UCC3803: UCC3803 slope compensastion

    Resolved
    Part Number: UCC3803 Other Parts Discussed in Thread: UCC2803 , UCC28C53 Hi, There's a section in UCC3803 datasheet called "Slope Compensation". It uses one BJT and few passive components with it. How to calculate Rsc, Rf, Cf and Rcs? If I'm not wrong…
    • Resolved

  • UCC3803: Where have all the TI Unitrode seminars / papers and videos gone???????

    TI Thinks Resolved
    Part Number: UCC3803 Tool/software: The list of past PSDS seminars is impressive https://www.ti.com/design-resources/seminars/power-supply-design-seminar-psds/psds-resources.html but if you try to access them, you end up at the TI home page. It looks…

  • UCC3803: Custom Power Supply Design

    TI Thinks Resolved
    Part Number: UCC3803 Hi, I want to design a custom SMPS with the required specifications: Input voltage min: 22V; Input voltage max: 26V (Nominal input: 24V) Output voltage: Isolated 150-0-150V (With center tap transformer) Output power maximum…

  • UCC3803: we need to calculate the transformer turns ratio, which we are unable to do.

    TI Thinks Resolved
    Part Number: UCC3803 Other Parts Discussed in Thread: UCC2897A Tool/software: Hi, We are developing an isolated power supply circuit using the UCC3803. We have set the switching output of the FET (IRFR120NTRPBF) to 12V, and the transformer's input…
    • Answered

  • UCC3803: TINA simulation issue for AC analysis

    Resolved
    Part Number: UCC3803 Hi Team, I would like to simulate UCC3803 with AC analysis, but it doesn't work as below picture. May I know how to solve this issue? Regards, Jason
    • Resolved

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