WEBENCH® Tools/LM73606: Correct Light Load Efficiency Value

Part Number:LM73606

Tool/software: WEBENCH® Design Tools

Hello Team,

I am helping to support a question on the LM73606. Specifically we are trying to achieve 90% efficiency under light load. Figure 33 in the datasheet points to it being possible, but WEBENCH provides an "N/A" when trying to do it. I am looking for assistance with this as we are looking for verification.

Parameters: Vin=24, Vout = 6V, Iout = 20mA-200mA

Questions:

1. Is there data or suggestions you can provide on an inductor for this application? (formula for inductance, DCR of inductor, and efficiency relation)
2. Do you have the inductor PN that was used to provide the data captured in figure 33 of the datasheet?
   1. Would this be the same part number that is on the EVM: XAL7070-222MEB?

I greatly appreciate your assistance with this!

Regards,

Ramon