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LM25145: Conversion efficiency with DCM at 30mA output

Dice-K
Mastermind 6320 points
Part Number: LM25145
Other Parts Discussed in Thread: LM5145, LM5146-Q1, LM25141, LM25148

Hi support team,

I would like to obtain conversion efficiency under the following conditions.

Mode = DCM
Vin = 14V
Vout = 7.5V
Iout = 30mA

But there is no data less than 100mA in Figures 2 and 3 of the data sheet.
Is there any method other than calculating with WEBENCH?

Regards,
Dice-K

  • +1
    TI__Mastermind 49057 points

    Hi Dice-K,

    We do not currently model DCM operation in WEBENCH or the  quickstart calculator. However, you can try your configuration by suitably modifying the LM5145 or LM5146-Q1 EVMs.

    Please consider using the LM25141 or the LM25148 controllers that have low quiescent current and are specifically designed for high light-load efficiency.

    Regards,

    Tim