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TPS54561: Safe Operating Area

Kazuhiko Hirano
Genius 11613 points
Part Number: TPS54561

Hello,

 

Q1:

At Figure 50 in the datasheet, used EVM is TPS54561EVM-555?

 

Q2:

What does “Nat Conv” mean? “Still Air”?

 

Q3:

What is theta(j-a) for Nat Conv, 100 LFM, 200LFM and 400 LFM respectively?

 

Q4:

Tj(max) = 150oC at Figure 50? Or it is 135oC to have margin as WeBench?

 

Best regards,

 

K.Hirano

  • 0
    TI__Mastermind 27045 points

    Hi Kazuhiko,

    Q1:

    At Figure 50 in the datasheet, used EVM is TPS54561EVM-555?------YES

     

    Q2:

    What does “Nat Conv” mean? “Still Air”?--------Nature convection means still air enviornment

     

    Q3:

    What is theta(j-a) for Nat Conv, 100 LFM, 200LFM and 400 LFM respectively?-----Sorry no test data for this

     

    Q4:

    Tj(max) = 150oC at Figure 50? Or it is 135oC to have margin as WeBench?-------It's for Tj=150C