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  • 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

  • UCC2803: Question Regarding "Forward" Topology for UCC2803

    TI Thinks Resolved
    Part Number: UCC2803 Other Parts Discussed in Thread: UCC3803 For the UCC2803, at the URL: www.ti.com/.../UCC2803 It lists 3 topologies: Boost, Flyback, Forward. The UCC3803 only lists: Boost, Flyback What is "Forward" topology? (I understand Buck…
    • Answered

  • 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

  • UCC2803-Q1: UCC2803-Q1 Current Limiting function

    TI Thinks Resolved
    Part Number: UCC2803-Q1 Other Parts Discussed in Thread: MANDO Tool/software: Hello? My name is HL mando researcher Chuljin kim In the UCC280X-Q1 documentation in the section 9.3.11 (Current Limiting) Attached data and as highlighted above.…
    • Answered

  • UCC2803-EP: Start up circuit

    Resolved
    Part Number: UCC2803-EP Other Parts Discussed in Thread: UCC2803 , , UCC2802 Tool/software: Hello, We are using UCC2803 Flyback controller IC. Regarding start up circuit , could you please help me a different approach apart from using resistor…
    • Resolved

  • UCC2803-EP: Design guide

    TI Thinks Resolved
    Part Number: UCC2803-EP Other Parts Discussed in Thread: UCC2803 Tool/software: Hello, I am currently using https://www.ti.com/lit/ta/ssztcw6/ssztcw6.pdf?ts=1748275378787 - design guide for calculating Transformer parameters. I have considered DCM…

  • UCC2803-EP: START UP CIRCUIT USING RESISTORS

    TI Thinks Resolved
    Part Number: UCC2803-EP Other Parts Discussed in Thread: UCC2803 Tool/software: Hello As per below webench start up circuit suggestion, Input voltage ranges from 180-370V, if i consider 180V as input voltage then the current consumed by UCC2803 during…
    • Answered

  • UCC2803-Q1: Upgrade from UCC2805 - Duty cycle limitation

    Resolved
    Part Number: UCC2803-Q1 Other Parts Discussed in Thread: UCC2803 , UCC2813-5 Tool/software: Hi, my customer wants to move from UCC2805QDREP (50% duty cycle) to UCC2803MDREP (100% duty cycle). They fear issues on their flyback design that may be introduced…
    • Resolved

  • UCC2803-EP: Calculating Raux value

    TI Thinks Resolved
    Part Number: UCC2803-EP Other Parts Discussed in Thread: UCC2803 Tool/software: In my case, i have Vaux as 9 to 9.5V. How to calculate Raux since internal zener diode will never be operational as our Vinput is 9V. Through Webench it says 10ohm.

  • UCC2803: Which IC to be used from UCC28xx series.

    TI Thinks Resolved
    Part Number: UCC2803 Other Parts Discussed in Thread: UCC2800 , , UCC2802 , UCC2804 Tool/software: HI, I have to build isolated power supply. AC/DC converter with Input DC 20V to 60V Input AC 20V to 265V Output 12V 0.1A I came across…

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