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LM5121: LM5121 EVM for 12V in 48V @150W

Mat1980
Intellectual 1260 points
Part Number: LM5121
Other Parts Discussed in Thread: LM5122,

Hello,

can you please let me know what needs to be done to get the EVM working with 12Vin and 48Vout?

Thanks

  • 0
    TI__Guru* 78100 points
    Hi Mat,

    You had a similar post regarding the LM5122. Those comments applied here to the LM5121 EVM, too. Namely,

    (1) all the output ceramic capacitors to be 100V rated, and Alum Elec to be >=63V rated.
    (2) MOSFET to be at least 60V rated.
    (3) The low side resistor of the FB resistor divider.

    If the new values are remained the same, your loop compensation network may remain the same.

    Thanks,
    Youhao Xi, BCS Applications Engineering.