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LM5175: LM5175 Limiting the input voltage 22-30V

no name
Prodigy 20 points
Part Number: LM5175

hi, 

I want to set the input voltage between 22-30V and the output voltage to 28.5V. However, I am unable to limit the input voltage through the IC. I can set the output voltage to 28.5V, 10A.
How can I limit the input voltage?

  • 0
    TI__Genius 10385 points

    Him

    Thank you for using E2E forums, I am not sure what you mean by limiting the input voltage? Normally you set the input voltage with the power supply, the IC does not play a role in that. Could you please elaborate your question?

    BR,

    Haroon

  • 0 in reply to Haroon Wardak
    Prodigy 20 points

    I aim to limit the input voltage to the range of 22V-30V and ensure that it stays within this voltage range. Additionally, I intend to fix the output voltage at 28.5V. Consequently, I want the duty cycle to be in the range of 20%-90%

  • 0 in reply to no name
    Prodigy 20 points

    I want the duty cycle  to be between 20% and 90%

  • +1 in reply to no name
    TI__Mastermind 46341 points

    Hi,

    I am really not sure if we have both the same understanding.

    Input voltage = is the input voltage to the SMPS (Switch Mode Power supply) in this case the LM5175

    Output voltage = Is the voltage generated and regulated by the SMPS

    So the input voltage is coming from the outside the and the source of that supply needs to ensure that the voltage stays within a defined range.

    The SMPS does not have in influence on that beside it would work in reverse operation.

    So can you please clarify based on the above definitions what your requirements would be.

    Best regards,

     Stefan

  • 0 in reply to Stefan Schauer
    Prodigy 20 points

    just, ı want to adjust the input voltage 22V-30V. if 32V ,33V and another voltage with will come in voltage supply. I want to doesnt work the this IC.   In summary,  it should be work 22V-30V power supply  voltage. 

  • 0 in reply to no name
    TI__Mastermind 46341 points

    Hi,

    Sorry, I really do not understand your request.

    Can you provide more details, maybe add a short drawing or schematic?

    Best regards,

     Stefan