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  • UCC28712: HV design suggestion

    Part Number: UCC28712 Other Parts Discussed in Thread: TIDA-010000 , TIDA-00173 Hi, customer want to use the UCC28712 in with Vin 850V to generate 12V. Do you have design proposal or reference design especial the series resistors? Regards, Holger

  • UCC28712: VDD not charging, but HV voltage presents

    Part Number: UCC28712 HI Team, I am working on UCC28712 Flyback configuration, thing is i am facing issue with start-up means. I are observing pin 7 HV getting High voltage from rectifier which is 210VB, but we are not seeing capacitor charging. …

  • UCC28712: UCC28712 HV Buck Converter design. Output not regulating to desired voltage

    Part Number: UCC28712 Other Parts Discussed in Thread: PMP22557 , UCC28910 , I've attempted a HV buck converter design based on the PMP22557. The desired output is between 12V and 36V (adjustable) with ideally 5A max output. Only one MOSFET is populated…
    • Answered

  • UCC28712: Output 5V1A and 20V3.25A

    Resolved
    Part Number: UCC28712 Hi Experts, Please help clarify/confirm if UCC28712 can output 5V1A and 20V3.25A. Also, can it output 65W? Is a demo/simulation available to make sure UCC28712 work in 65W? Thank you and best regards, Gerald
    • Resolved

  • UCC28712: UCC28712 replacing UCC28711

    TI Thinks Resolved
    Part Number: UCC28712 Other Parts Discussed in Thread: UCC28710 , , UCC28711 , UCC28780 Hello We have a module use generally use UCC28710 dbr and it works fine. Due to shortage , we bought some UCC28712 thinking it should make no difference because we do…

  • UCC28712: ucc28712 not working with custom made transformer

    TI Thinks Resolved
    Part Number: UCC28712 Hi, i am working on aux power supply using a ucc28712 and multioutput custom made sumps transformer for the design ,use the ti design calculator for resister values (Rs1,Rs2,Rcs,Rlc) but still couldn't able to get outputs i have…

  • UCC28712: UCC28712D

    TI Thinks Resolved
    Part Number: UCC28712 Other Parts Discussed in Thread: UCC28C42 Hi Team, Do you have reference schematic design using UCC28712D whose Input is 8V DC - 45V DC Output 12V DC / 1.7A DC I cant able to get the information from Webench . Kindly share the info…
    • Answered

  • RE: UCC28712: Repeatedly Shutting down on Overvoltage

    Resolved
    Hi Brett, I received your files and sent my comments in the other chat (where you sent the pdf files). Please let me know if you have any questions there. Thank you Regards, Harish

  • UCC28712: Startup Issue

    TI Thinks Resolved
    Part Number: UCC28712 Hello - We are attempting to startup our flyback power supply but are running into issues. We are using the UCC28712 controller. We see Vdd charge to ~ 21V and then the gate pulses 1 time. The pulse width of the gate signal is ~…

  • UCC28712: Gate Signal During Startup

    Part Number: UCC28712 Hello - We are experimenting with the UCC28712 in a 24V power supply design. We are using a SiC MOSFET as the primary switch in the flyback circuit. During startup, we observed the following waveform where the blue trace is the gate…

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