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  • UCC28061: Compensation resistor adjustment

    TI Thinks Resolved
    Part Number: UCC28061 Hi Sir, According to the requirements of Equation 43, RZ is 2.1k ohm.However, it is actually found that the power factor is not ideal, and the power factor can be improved by debugging the RZ resistor. The smaller the adjustment,…
    • Answered

  • UCC28061: UCC28061's minimum off time

    Resolved
    Part Number: UCC28061 Dear Team, My customer is evaluate UCC28061 and L6562. L6562 can operate from 500kHz-1000kHz. He is wondering how about UCC28061 's minimum off time and maximum operating frequency. Or you have better IC suggestion please feel free…
    • Resolved
    • Answered

  • UCC28061: UCC28061's minimum off time

    Resolved
    Part Number: UCC28061 Dear Team, My customer is evaluate UCC28061 and L6562. L6562 can operate from 500kHz-1000kHz. He is wondering how about UCC28061's minimum off time and maximum operating frequency. Or you have better IC suggestion please feel…
    • Resolved

  • RE: UCC28065: Choke start/stop winding turns

    Nevertheless, I found in some datasheet and application notes, the drawing of the chokes are different, See below: 1. Datasheet of the UCC28061 2. Application Note (8 SLUA959–April 2019): , 3. Reference design (SLUU341B–DECEMBER 2008 – REVISED – MARCH…
    • Answered

  • UCC28061-Q1: Influence of mold compound and die-attach for Thermal Resistance

    Resolved
    Part Number: UCC28061-Q1 Hi, The PCN is announced for the UCC28061-Q1 . The content is changing mold compound and die-attach. Is this PCN affected for Thermal Resistance? Best Regards, Kuramochi
    • Resolved
    • Answered

  • UCC28061-Q1: Influence of mold compound and die-attach for EMI

    Resolved
    Part Number: UCC28061-Q1 Hi, The PCN is announced for the UCC28061-Q1. The content is changing mold compound and die-attach. Is this PCN affected for EMI characteristics? Best Regards, Kuramochi
    • Resolved
    • Answered

  • UCC28061: Applicability Area

    Resolved
    Part Number: UCC28061 Hi, I am a design engineer. I am facing a persistent failure occuring in PFC circuit. We use UCC28061D as a PFC controller. At start-up, UCC28061D get fatal damage accompanied by switching transistor damage in most cases. I am working…
    • Resolved

  • UCC28064A: Ucc28061 replaced with ucc28064A does not work,

    TI Thinks Resolved
    Part Number: UCC28064A Other Parts Discussed in Thread: UCC28061 Ucc28061 replaced with ucc28064A does not work, The schematic is as follows The red line is the inductor current. The blue line is the pfc drive. The yellow line is the bus voltage.
    • Answered

  • UCC28061: TSET ABSOLUTE MAXIMUM RATINGS

    Resolved
    Part Number: UCC28061 Other Parts Discussed in Thread: UCC28063 Hi What is the maximum rated rating of UCC28061? And what is the voltage pulled up internally? Best Regard T Kishi
    • Resolved

  • UCC28061: distortion on ZCDB

    TI Thinks Resolved
    Part Number: UCC28061 Hi, I am using UCC28061, when input is lower than 200VAC, everything wroks fine but when input goes up to 220VAC, the distortion begins. Following attach is the waveform during the failure, please help me to understand why is this…

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