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  • UCC28780: Avoid depletion MOSFET

    TI Thinks Resolved
    Part Number: UCC28780 Hello, I am doing a application with very high input voltage, so the price of the depletion MOSFET it is critical for the design... I was wondering if the depletion mosfet can be substituted by a resistor and a zener diode, like...

  • RE: UCC28780: frequency calculation formula and the RDM pin

    Hello Fleming, I apologize for the long delay. Here is the derivation provided to me: Mathcad - fsw expression for ACF.pdf Regards, Ulrich

  • RE: WEBENCH® Tools/UCC28780: UCC28780

    Hello, You might want to check your design with the excel design tool? You can find it at the following link. When the converter first comes up it will give three sample pulses checking for a fault. Input under voltage, output over voltage and...

  • RE: UCC28780: How to shut down UCC28780

    Dear Ulrich Thank you for your helpful advice. Your answers are always really great. My concern has been resolved. I use the REF terminal as you suggested. Also, thank you for telling me the detailed internal circuit specifications. (Constant current...

  • ucc28780

    HEllo: For some complicated reason, we have to control a converter that works only in voltage control mode. So we are trying to make a discrete feedback control circuit that everyone shows classically: an error opamp, compensated for some initial P...

  • RE: UCC28780: UCC28780+PFC can achieve 200W?

    Hi Rock Sorry for the late response to your post, this part is supported by my colleagues in the US who are on vacation today, I have notified the of your post and they will respond early next week. Regards Peter

  • UCC28780: About the calculation formula of ΔB

    • Resolved
    Part Number: UCC28780 The calculation formula of ΔB is described in P40 of the data sheet

  • UCC28780: Output Filter Calculation

    • Resolved
    Part Number: UCC28780 I am now reading the UCC28780 data sheet. I have a question about LC filter

  • UCC28780: Tips on transformer design

    • Resolved
    Part Number: UCC28780 To all concerned I would like some advice on the transformer design when

  • UCC28780: ucc28780

    • Resolved
    Part Number: UCC28780 Question: we have the UCC28780 EVM ( 20v/45W) and its input is for universal

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