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Design switching frequency for TPS6104X

Knighty Nimp
Expert 1260 points
Other Parts Discussed in Thread: TPS61040, TPS61041

 

For generally idea boost DC-DC,  what happen when design switching frequency,Fs(max) exceed maximum frequency which specific in datasheet, in this case 1MHz?

NT

  • 0
    TI__Mastermind 32400 points

     

     

    The TPS61040 and TPS61041 are only tested and characterized up to 1MHz switching frequency.  It is possible to set the Vin, Vout, inductor, and current so the IC operates at frequencies above 1MHz.  This has been verified in the lab.  However, we do not recommend this operating frequency because we can not guarantee any specifications.  The most likely effects will be reduced efficiency and less accurate line and load regulation.  I recommend using the datasheet equations to select an inductor that limits the maximum switching frequency to less than 1MHz.

     

    Thanks!

    Tahar