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  • UCC21520: DT pin of the Isolated Gate driver UCC21520

    TI Thinks Resolved
    Part Number: UCC21520 As per the Datasheet, if the DT pin is left open: The default dead time is from 0 to 15ns Maximum. Can you confirm that by keeping the DT pin Floating, will set the dead time between OUT A & OUT B to maximum 15 ns. In my application…

  • RE: UCC21520: Altium Simulation Error: Time Step Too Small

    Hi Krystian, Here is the additional detail from the output window. I used either the Unencrypted Pspice Transient Model or the regular Pspice transient model from the TI UCC21520 site. I will try both and see if I still get the same message. Thank you…
    • Answered

  • UCC21520: MOS reverse recovery effect of body diode: Vds hign dv/dt

    Resolved
    Part Number: UCC21520 In the process of MOS switching, due to the application's need, the inverter's turn-off current is about 15A, which leads to the high switching speed and Vds overshoot in the process of diode continuing. May I ask how to smooth the…
    • Resolved
    • Answered

  • RE: UCC21520: The controller is placed in the secondary side control.

    Resolved
    Hi Jimmy, Has your question been answered? If so, please mark that the thread as been resolved. Otherwise if you still have the same question, I will be able to help you more if you can send me a block diagram of your system which will help me make the…
    • Answered

  • UCC21520: tpwd change

    Resolved
    Part Number: UCC21520 Hi, My customer gets the UCC21520 PCN change, there have some differences between the Tpwd. the Tpwd change from 5ns max to 6ns max. Is it function to change or the datasheet fix? Will it impact the function? thanks.
    • Resolved
    • Answered

  • UCC21520: I am having problems with my OutA_1 and OutB_2

    Resolved
    Part Number: UCC21520 I did my simulation on LTSPICE but I do not understand why I am getting signal for both outputs looking this way. om the simulation result, Vdda_1, which is 20V, has a very bad ripple. The outa_1 signal does not look good, the…
    • Resolved

  • UCC21520: Can it drive a Half-Bridge with a SiC MOSFET

    TI Thinks Resolved
    Part Number: UCC21520 Other Parts Discussed in Thread: UCC21530 Hi Team, Our customer would like to confirm if the UCC21520 can drive a Half-Bridge with a SiC MOSFET. According to our customer, he can not find any information or examples on how to connect…

  • UCC21520-Q1: UCC21520-Q1 Bootstrap Capacitor design

    TI Thinks Resolved
    Part Number: UCC21520-Q1 Other Parts Discussed in Thread: TIDA-01604 Dear E2E design support, Hello, I'm Kihoon Kim from Seoul National University of Science and Technology, South Korea. Now I'm designing gate drive circuit for 2-phase interleaved…
    • Answered

  • UCC21520: datasheet difference between rev. D and rev. E

    Resolved
    Part Number: UCC21520 Dear Specialists, My costomer'd like to know the difference between Rev. D and Rev.E. PCN states features and tpwd have changed from Rev.D to Rev.E. But they don't have old version(Rev.D), so could you please provide the datasheet…
    • Resolved
    • Answered

  • RE: UCC21520: UCC21520 vs UCC21540

    Resolved
    Hi Kygo, For such a short duration this peak is not likely to damage the driver. That said, it would be better to keep this peak below the datasheet value of VDD +0.5V. This could be accomplished by: 1. Adjusting Rgate to reduce ringing. 2. reducing parasitic…

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