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LM5145: improve efficiency

GARETH OU
Mastermind 8835 points
Part Number: LM5145
Other Parts Discussed in Thread: LM5146-Q1

Hi

How can the following LM5145RGYR test results improve efficiency?

>95% @ 12Vin?

>90% @48Vin?

Thanks

  • 0
    TI__Mastermind 49647 points

    Hi Gareth,

    Please use the LM5145 quickstart calculator to optimize your design. Specifically focus on the MOSFETs and inductor selection. Also, you need an input electrolytic for damping and a cap from ILIM to GND.

    Take a look at the LM5146-Q1 EVM (12Vout/8A/400kHz) as an example.

    Regards,

    Tim