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  • UCC28700-Q1: Controller Alternative to UCC28700 in PMP10200 Reference Design

    Part Number: UCC28700-Q1 Other Parts Discussed in Thread: UCC28700 , PMP10200 , UCC27517A , UCC28730 Hello, I want to use the PMP10200 reference design, but the UCC28700 controller used in this design is quite old. Can you recommend a newer generation…
    • Answered

  • UCC28700-Q1: UCC28700

    Resolved
    Part Number: UCC28700-Q1 Other Parts Discussed in Thread: UCC28700 Tool/software: I have exactly the same issue with UCC28700Q1 as the one in this question " UCC28700-Q1: Need help reviewing the design including transformer ", even the waveform are the…
    • Resolved

  • UCC28700-Q1: DRV Failure mode effect

    TI Thinks Resolved
    Part Number: UCC28700-Q1 Other Parts Discussed in Thread: UCC28700 Tool/software: Hello, Does the UCC27800-Q1 protects when there is a failure mode of DRV stuck High, making the external Power MOSFET to ON continuously. Does the cycle-by-cycle current…

  • UCC28700: Noise issue

    TI Thinks Resolved
    Part Number: UCC28700 Tool/software: Hi ti team, We have a noise issue when using UCC28700 in a 120VAC power supply application. The noise was improved by increasing the CS pin capacitor (originally 470PF, now changed to 1000PF). The UCC28700 datasheet…

  • UCC28700: UCC28700 Voltage sense (Vs) resistor divider and other issues.

    Part Number: UCC28700 Tool/software: I designed an AC/DC converter using TIDRF62 as a reference. The TIDRF62 uses Wuerth 750314727 however one was not available when I made my design and I used a Myrra 74080. The main difference between the two transformers…

  • UCC28700: Unencrpyted Spice model of UCC28700

    Part Number: UCC28700 Tool/software: Hi, Please provide the unencrypted spice model of UCC28700. Thanks and Regards Shivam Gupta
    • Answered

  • UCC28700: C15 and R20 in Slum619

    Resolved
    Part Number: UCC28700 Other Parts Discussed in Thread: TINA-TI Tool/software: Hi, I have compared the circuit presented in SLUA653C (page 18, see below) with the circuit in SLUM619. I noticed that components C15 and R20, which are defined in the…
    • Resolved

  • UCC28700-Q1: UCC28700-Q1 output voltage is abnormal

    Part Number: UCC28700-Q1 Tool/software: Hello, We are using TI UCC28700-Q1 to design a flyback power supply. A problem was found during test, please help analyze the possible reason: Design parameters: Input voltage :60-500Vdc, Output voltage…
    • Answered

  • UCC28700: UCC28700/LM5020 : Similar Part with <50khz operating range

    Resolved
    Part Number: UCC28700 Other Parts Discussed in Thread: LM5020 Hi, I am looking for a PWM controller similar to that of UCC28700 / LM5020 but with <50kHz switching frequency. Reason : My operating input is 50V-1500V and so the minimum ON time of the…
    • Resolved

  • UCC28700: 3kV output converter, quasi resonant controller = LM5185 or UCC28700

    Part Number: UCC28700 Other Parts Discussed in Thread: LM5185 , , LM5023 , UCC28600 Tool/software: Hi, We are trying to develop a 3kW converter quasi resonant with input 12Vdc and output 3kV dc. The power of this converter should be 3.5W and will…

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