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UCC28950 380V/28V 1000W DC-DC converter design

Erdinc Yalvac
Prodigy 10 points
Other Parts Discussed in Thread: UCC28950

Hello,

I am trying to design a converter that the input is 300-400V and the output is 28V/35A. It can be 500W converter and it can be used parallel using syncronous pins of the IC.

Firstly I am trying to desing it by simulation (TINA).I am calculating all the values of passive elements by using excel document and using them in simulation.  I cannot regulate the output voltage using TINA. I could not understand which pin of the UCC28950 is used for the output voltage feedback.  Do you have any available simulations for these desings:

1-input:300-400V and the output: 28V/35A (It can be 500W converter and it can be used parallel using syncronous pins of the IC)

2-input:18-36V and the output: 28V/35A  (It can be 500W converter and it can be used parallel using syncronous pins of the IC)

  • 0
    TI__Expert 4840 points

    Hello Erdinc bey,

    I do not know if you have received a response to your questions.

    The CS pin is used for the feedback. I do not have ready simulations for your designs but I can help you with them.

    By the way, I am the Analog Field application Engineer based in Istanbul and you can reach me at +90-555-669-6953 or murat@ti.com.

    Thanks,

    Murat.