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LM5156: To design a DC-DC power,LM5156 is right soultion?

Chen Alex1
Expert 2065 points
Part Number: LM5156

hi sir

i would like to design a dc-dc power stage, spec as below, LM5156 is a right solution?

For Positive, +10V~+110V Vout programmable, 48Vin, Continuous 0~40V /2A, Transient 110V/2A

For Negative, -10V~-70V Vout programmable, 48Vin, Continuous 0~-40V /2A, Transient -70V/2A

thanks

  • 0
    TI__Expert 3525 points

    Hello,

    Thank you for using E2E. Do you want to have one powerstage for both, the positive and the negative? Or do you want to have 2 seperate powerstages?

    Should the output voltage be dynamically adjustable or will there be a fixed value that is decided before starting?

    What would be the application for this design?

    Thanks and best regards,

    Moritz

  • 0 in reply to Moritz
    Expert 2065 points

    hi Moritz

    2 seperate powerstages,dynamically adjustable

    ATE

  • 0 in reply to Chen Alex1
    TI__Expert 3525 points

    Hi,

    Theoretically it is possible to use LM5156 in flyback topology for this application. However it will be difficult to optimize the design (transformer, compensation..) for such a high output voltage range. It also depends on customers needs regarding the transient of the output voltage change.

    Best regards,

    Moritz