LM5118: Requirement for better recommendation for high efficiency at light load

Hi Amelie,

Thanks for reaching out with you questions and for considering the LM5118.

Can you please let me know the efficiency requirement at light loads? Is there an input current consumption specification for when the load current is less than a certain value? This will help in selection the correct IC

Please feel free to contact me directly.

Thanks,

Garrett

Hi Garret,

Thanks for your reply.

When using LM5118 at light load (several mA), the efficiency is about 40%. Customer needs about 60-70% when 9-36Vin to 12Vout at light load (several mA).

I know that LM5150 improves efficiency at light load by alternating between low Iq stand-by and wakeup modes, even can realize 70-80%. However, it can only ouput 10.5Vout max...

Do you have better recommendation?

Thanks! 

Hi Garrett,

Any update?

Thanks!

Hi Garrett,

Thanks for your reply.

What customer need is buck-boost. what about solution high efficiency at load light?

Thanks!