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  • UCC3895: Internal block diagram analysis with DELAB/CD

    TI Thinks Resolved
    Part Number: UCC3895 Other Parts Discussed in Thread: UCC28C45 , UC2845 Tool/software: Hi Team, Could you please help share how the CS, ADS pin work to control DELAB/DELCD? In below diagram, what's Q1 and Q3 initial status, on or off? When U1 output…

  • 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…

  • RE: LM5021: 50% max duty cycle for Two Transistor forward

    Hi, The device typical Dmax is 50%, so the datasheet does not guarantee max Dmax not exceeding 50%. You can consider other devices such UCC28C41, UCC28C44, or UCC28C45, these devices max Dmax guarantee not exceeding 50%.
    • 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
    • Answered

  • UCC28C45: COMP Pin Current Limit

    Resolved
    Part Number: UCC28C45 Hello, Can you please help confirm: Datasheet says that the error amplifier is internally current limited (D/S 8.3.1.1). Is the current limit the 10mA value stated in the absolute maximum ratings? Thank you for your help
    • Resolved

  • UCC28C45: Max COMP Pin Current Limit

    TI Thinks Resolved
    Part Number: UCC28C45 Hello, The datasheet specifies the minimum & typical, but not the max source current. Is there an estimate of the expected maximum source current? Customer is requesting for the value. Thank you!

  • WEBENCH® Tools/UCC28C45: Part UCC28C45 is removed from webench?

    TI Thinks Resolved
    Part Number: UCC28C45 Other Parts Discussed in Thread: UCC28C42 , UCC28C43 Tool/software: WEBENCH® Design Tools Hello Sir/Madam, I have designed an AC-DC power supply using UCC28C45. Now the part is removed from webench support. WHY?? I want to optimize…

  • PMP10783: REplaceent of UCC28C42 with UCC28C45

    TI Thinks Resolved
    Part Number: PMP10783 Other Parts Discussed in Thread: UCC28C45 Good day. i would like to ask if i could use this reference circuit with UCC28C45D?

  • 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…
    • Answered

  • UCC28C45: UCC28C45 tempetature

    Resolved
    Part Number: UCC28C45 Other Parts Discussed in Thread: UCC28C43-Q1 Hi Team, My customer is using UCC28C45 in their old design. Now they are doing on board charger and want move their exist design to OBC. But the UCC28C45 temp is 105C and they want 125C…
    • Resolved

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