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  • UCC28740-Q1: Alternate IC for UCC28740-Q1

    Part Number: UCC28740-Q1 I want to design a two switch flyback (400V-15V 1.5A).I have come across the IC UCC28740-Q1.But the maximum switching frequency of this IC is found to be 100Khz.We need a bit higher swicthing frequency.Could you suggest any alternate…

  • UCC28740-Q1: using SiC mosfet as primary switch

    TI Thinks Resolved
    Part Number: UCC28740-Q1 Other Parts Discussed in Thread: UCC28740 , Hi, I want to use SiC mosfet as primary side switch. UCC28740-Q1 is designed to drive only Si mosfet gates directly. When I try using a separate gate driver IC or a push-pull gate drive…

  • UCC28740: UCC28740-Q1

    TI Thinks Resolved
    Part Number: UCC28740 Hello, The minimum voltage for Start-Up with UCC28740 is mentioned as 100 V in the Data sheet but for our application we would want it to start at a lower voltage. Would it be possible to do that ? Please advice, Thank You

  • UCC28740-Q1: the simplis encrypted model is not working

    TI Thinks Resolved
    Part Number: UCC28740-Q1 Other Parts Discussed in Thread: UCC28740 Hi, I tried simulating the UCC28740 simplis netlist provided on the product page. Although the model says that it can work with the simplis versions higher than 7.2d, while running in 8…

  • UCC28740-Q1: Unencrypted LTspice or Pspice model

    TI Thinks Resolved
    Part Number: UCC28740-Q1 Other Parts Discussed in Thread: UCC28740 , UCC28730 , UCC28742 Hi all, Is there an Ltspice or pspice model available for UCC28740. On the product page I could find only a Simetrix/Simplis model which is not easily convertible to…

  • UCC28740-Q1: Brown out Brown in voltage

    Part Number: UCC28740-Q1 Other Parts Discussed in Thread: UCC28740 Hi team, UCC28740-Q1 Brown out and brown in voltage differs a lot. Is there any way to decrease this delta voltage? Thanks Scarlett

  • UCC28740-Q1: Please provide design guideline

    TI Thinks Resolved
    Part Number: UCC28740-Q1 Other Parts Discussed in Thread: UCC28740 Hi team, My customer ask for training for this device, so could you provide presentation material with flyback topology introduction for us? Then we can support this request. Thanks

  • Controller for 2switch flyback 1000V input

    TI Thinks Resolved
    Other Parts Discussed in Thread: UCC28740-Q1 Hi, 1. Is there any flyback controller IC that can be used for 2switch topology directly? 2. What is the most reliable way of driving the high side mosfet if I use a 1-switch flyback controller like UCC28740…

  • UCC28730-Q1: HV Supply above 700Vdc as in UCC28740

    TI Thinks Resolved
    Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28740 , UCC28730 , UCC28740-Q1 Hi, the data sheet of the UCC28740 suggests to use two capacitors to allow start up from high voltage for voltages above 700Vdc. Why is this not included in the data…
    • Answered

  • UCC28740-Q1: ON_OFF control of UCC28740-Q1 flyback from MCU

    Resolved
    Part Number: UCC28740-Q1 Other Parts Discussed in Thread: UCC28740 Hi Champ, My customer wants to control ON/OFF of UCC28740-Q1 Flyback circuitry from MCU GPIO. Could you check if QA_UCC28740_ONOFF.xlsx schematic in attached xlsx file is feasible? Best…
    • Resolved

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