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  • UCC28C45-Q1: Is there a calculator for flyback design using UCC28C45-Q1

    TI Thinks Resolved
    Part Number: UCC28C45-Q1 Is there a calculator for flyback design using UCC28C45-Q1.

  • UCC28C45-Q1: UCC28C45-Q1 , Diode rating related query

    TI Thinks Resolved
    Part Number: UCC28C45-Q1 Hello, The above diode helps in discharging the soft start capcitor under UVLO condition to gain back soft start feature. As I simulate its behaiour, the peak current through diode is 2A which ramps down to 0 in 20-30us…

  • UCC28C45-Q1: PWM pulse skipping

    TI Thinks Resolved
    Part Number: UCC28C45-Q1 Hi, iam using UCC28C45-Q1 for flyback design, but my pwm pulses are skipping and also cs pin is picking noise even after using RC filter with lower cutoff frequency. Also is there any issue if we use ic ground and power ground…

  • UCC28C45-Q1: difference between PWM controller and flyback controller

    TI Thinks Resolved
    Part Number: UCC28C45-Q1 Other Parts Discussed in Thread: LM5155-Q1 , LM3481-Q1 , UCC28C45 , UCC28C55 , LM5155 , LM3481 Hi Expert, Our customer is developing OBC/DCDC platform. I see both UCC28C45-Q1 PWM controller and LM3481-Q1 or LM5155-Q1 flyback…

  • RE: UCC28C45: what caused the difference of recommended operating temperature between UCC28C45 and UCC28C45-Q1

    Ben, thanks. Then what caused the difference of recommended operating temperature between UCC28C45 and UCC28C45-Q1, regarding both can endure 150C maximum junction temperature. Is it guaranteed through test for Q version device?
    • Answered

  • UCC28C45-Q1: Cycle skipping / Hiccup

    Resolved
    Part Number: UCC28C45-Q1 Other Parts Discussed in Thread: UCC28C45 , TL431 Dear TI, I am currently prototyping a flyback converter design using an UCC28C45QDRQ1 controller in voltage mode at a switching frequency of 500kHz. I noticed the converter works…
    • Resolved

  • UCC28C45-Q1: active clamp for 800W Power level design?

    TI Thinks Resolved
    Part Number: UCC28C45-Q1 Hello, I have just got doubt whether can I use Active clamp topology in 800W to 1KW application? All the literature says Active clamp forward can be used up to 500W. Lets discuss in the forum what are consequences (pros…

  • UCC28C45-Q1: Convergence problem in TINA

    TI Thinks Resolved
    Part Number: UCC28C45-Q1 Other Parts Discussed in Thread: TINA-TI I am trying to make an active clamp forward for a 75v-135v dc input and 12v/20A output using a ucc28c45-q1 grade controller. When i try simulating the circuit on TINA-TI, i get an error…
    • Answered

  • UCC28C45-Q1: Trimming of Flyback Controller UCC28c4x

    Resolved
    Part Number: UCC28C45-Q1 Other Parts Discussed in Thread: UCC28C45 I am using the Flyback Controller UCC28C45-Q1 and want to improve accuracy with additional external Control Components. Datasheet mentiones that the reference Voltage is trimmed to …
    • Resolved

  • WEBENCH® Tools/UCC28C45-Q1: Output voltage error, when using current-mode PWM controllers in flyback applications

    TI Thinks Resolved
    Part Number: UCC28C45-Q1 Other Parts Discussed in Thread: UCC28730 , TL431 Tool/software: WEBENCH® Design Tools I'm trying to find suitable components for a 85-440VAC automotive flyback converter, with a single +12V/0.6A output. The Webench power designer…

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