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Showing 178 results View by: Thread Post Sort by
  • UCC28730: May I ask how UCC28730 can measure the phase & Gain waveform ?

    Kygo Cheng
    Kygo Cheng
    Part Number: UCC28730 Hi Team May I ask how UCC28730 can measure the phase & Gain waveform as follows, how to connect the external instrument on the SCH? The datasheet only shows how to calculate, but the customer wants to measure from the outside…
    • 13 days ago
    • Power management
    • Power management forum
  • UCC28730-Q1: Query regarding output current tuning of PMP22557

    Jagadeesh reddy
    Jagadeesh reddy
    TI Thinks Resolved
    Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 , PMP22557 , , TPS40210 , TPS40210-Q1 Dear TI e2e Team, We got the reference design from evaluation board (PMP22557) with part number of UCC28730. In that design given input voltage range is…
    • 1 month ago
    • Power management
    • Power management forum
  • Answered
  • UCC28730-Q1: Problem with importing UCC28730 MACRO in to TINA

    Daniel Waleniak
    Daniel Waleniak
    Resolved
    Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 , UCC24650 Hi there, I downloaded UCC28730 spice macro from this link . But when I try to import to TINA, an error message pops out: Same for UCC24650 from the same zip file. The only transformer…
    • Resolved
    • 5 months ago
    • Power management
    • Power management forum
  • UCC28730: Require reference PSpice model circuit on UCC28730

    Subhash Saini
    Subhash Saini
    TI Thinks Resolved
    Part Number: UCC28730 I am trying to simulate the part UCC28730 on Pspice for TI by using model given in its library But unable to get DRV Signal, voltage level at HV, VCC, VS and CS pins is as defined in electrical characteristic of part as per data…
    • 6 months ago
    • Power management
    • Power management forum
  • Answered
  • UCC28730: Maximum frequency of UCC28730

    Ludwig Jostes
    Ludwig Jostes
    Resolved
    Part Number: UCC28730 Hi, I am designing a Flyback-converter and am cuurently planning to use the UCC28730. How does the controller behave, when the maximum duty cycle is reached at a lower frequency then the 83kHz maximum frequency of the controller? For…
    • Resolved
    • 8 months ago
    • Power management
    • Power management forum
  • UCC28730-Q1: UCC28730-Q1

    rick Yu
    rick Yu
    TI Thinks Resolved
    Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Hi From the simulation result, controller will stop working(no DRV) when VOUT rise to the design value 12V, it looks like the VS level is above 4.6V and trigger the OVP, I want to consult…
    • 8 months ago
    • Power management
    • Power management forum
  • Answered
  • RE: UCC28730-Q1: UCC28730-Q1

    Wesley Hsu
    Wesley Hsu
    Resolved
    Hi, Rick: Glad to hear that you found the caused. My thinking is there might be some components is set initial properly. So it makes simulation errors during the simulation. For more detail, please consults Cadence. I thought they would share the correct…
    • 8 months ago
    • Power management
    • Power management forum
  • Answered
  • UCC28730-Q1: UCC28730-Q1

    rick Yu
    rick Yu
    Resolved
    Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Q1: Why Rs2 is not present in below formula? I think Ivsl(run) go both RS1 and Rs2, isn't it ? Q2, I am doing the design from DC input and the VIN(min) is as low as to 50V,output is…
    • Resolved
    • 9 months ago
    • Power management
    • Power management forum
  • Answered
  • UCC28730-Q1: UCC28730-Q1

    rick Yu
    rick Yu
    Resolved
    Part Number: UCC28730-Q1 Hi, Q1: I don't understand why Dmax is derived at fmax? From below formula, the duty cycle is minimum when switch frequency is maximum, isn't it? : Q2: I don't understand the principle why Dmagcc is fixed internally…
    • Resolved
    • 9 months ago
    • Power management
    • Power management forum
  • RE: UCC28730: Instable Switching

    Mike O'
    Mike O'
    Hello, The flyback is a transformer and the voltages will be couple through the transformer turns ratio. If you change your transformer turns ratio and set the magnetizing inductance of the transformer per the data sheet recommendations your instability…
    • 6 months ago
    • Power management
    • Power management forum
>

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