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  • UCC28C54: An error occurred during the simulation using ORCAD CAPTURE LITE-PSPICE

    TI Thinks Resolved
    Part Number: UCC28C54 Other Parts Discussed in Thread: UCC28C42 As shown in the figure above, when I used UCC28C54 for simulation, the following error occurred. May I ask what caused it?

  • UCC28C54: How to calculate/design this resistor in off-line power supply application in D/S?

    TI Thinks Resolved
    Part Number: UCC28C54 Other Parts Discussed in Thread: UC2844 , UCC28C44 , TL431 Hi Teams, What's this resistor's function? Can the converter work without this resistor? How to design this resistor's value? BRS, Marsh

  • UCC28C54: Advantage upgrading from C4x to C5x

    TI Thinks Resolved
    Part Number: UCC28C54 Hi I encountered a question when promote UCC28C54. What 20V VDD use external LDO for? Why can 30V VDD eliminate use of external LDO? BRs, Kian

  • RE: LM5185: If we have the product with more larger Vin

    Any single output 8-pin general purpose PWM can be used to design this low power flyback converter. A popular choice might be UCC28C54 . Also, download and use TI Power Stage Designer to help understand different topologies including flyback and more. …

  • RE: WEBENCH-POWER-DESIGNER: How does webench calculate RCD snubber power loss?

    Hi Sateesh Thanks for the info. I am pleased to see that you have fiiiiiiiiiinally realized that Webench is incorrect. Please have a look at my other posts on the topic of the UCC28C54 and Webench design, as there are many more parts that are totally wrong…

  • WEBENCH-POWER-DESIGNER: Flyback transformer turns calculation seems not to match datasheet formulas.

    Part Number: WEBENCH-POWER-DESIGNER Other Parts Discussed in Thread: UCC28C54 Hi I have a WeBench related question regarding a design that WeBench made and how WeBench performs the calculation of turns ratio for a flyback transformer. It concerns a design…

  • Time Settings Units Problem, Simulator Unusable, Displays in nS not mS

    Other Parts Discussed in Thread: UCC28C54 I noticed that the time scale displays in nS not mS. I have attached the "Run to Time Settings set to 50mS (Settings 2). The initial units displays 1000nS (Settings1). I simulated a simple circuit (Circuit 1) with…

  • RE: Flyback Controller recommendation

    UCC28C54 or UCC28C44 would be a good choice. However, 100W and above is likely too much power for a flyback. Steve

  • UCC28C53: SMPS

    TI Thinks Resolved
    Part Number: UCC28C53 Other Parts Discussed in Thread: UCC28C55 , , UCC2800 , UCC28C54 Hi I have design SMPS using UCC28C55 . I am start designing one solution on below both requirement. I have done schematic and also attached please review and comment. …

  • RE: LM5023: LM5023-CCM MODE

    Hello Max, Thank you for your interest in the LM5023 quasi-resonant (QR) flyback controller. The LM5023 is specifically designed to operate only in QR and DCM modes. It is not possible to configure this controller into CCM operation. I suggest that you…

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