LM5148: Does LM5148 can support 310W output?

Hi David,

Due to the customer using the test result of LT7891EVM to compare with LM5149EVM.

I know test conditions and components are different.

I need some information to prove that it can work normally at 200W.
And the parts temperature meets customer requirements.

BTW, I use Webench to simulate but temp always over 80 degrees.

https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=05A4C2766782FA32

Hi David,

I saw LMG2100R044 can support LM5148.

I need the LM5148+LMG2100R044 schematic and test result for customer reference. thanks 

Hello Jimmy, 

As I mentioned, will come down to thermal management.  compare the drive strength of the LTC device to ours, this is what it will come down to in terms of losses etc. We have a very generous gate driver for minimal losses, if the LTC device can deliver the power, there is no reason why our device cannot.  Use the calculator spreadsheet to calculate losses and adjust thermal resistance to estimate temp rise.  

LM5149-LM25149DESIGN-CALC Calculation tool | TI.com

Hope this helps.

David.