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TPS54424: Efficiency formula

Part Number: TPS54424
Other Parts Discussed in Thread: TPS54678, TPS54318, , TPS54335A

All newer devices with variable switching frequency (TPS54335A, TPS54318, TPS54678) I have worked with so far have formulas in the datasheet to calculate efficiency with, and I'm a huge fan. For TPS54424 there are only curves in the datasheet available. These have very little spread in frequency (600k-800k), so it is difficult to extrapolate what to expect at 1.5M, or 200k for example.

TPS54424 seems close enough  in functionality, package and technology etc. that I would expect this data to be available for it as well. Also, WEBENCH calculates efficiency just fine at various frequencies, so it seems that the constants which are typically in the datasheet are internally available.

Is there any chance that this data can be made available? that would make my work a lot easier....

  • Hi Roel,

    Unfortunately we don't have efficiency calculation spread sheet available for TPS54424. Please use webench and efficiency curve in the datasheet. You can also modify other devices spreadsheet you have since they are similar Buck converter.