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TPS53513: TPS53513/TPS548A20 Switching Frequency

user5054474
Intellectual 320 points
Part Number: TPS53513

I want to know the variation of switching frequency.

Could you tell me the precision (e.x. ±10%) or measured distribution data of switching frequency?

  • 0
    TI__Guru**** 191445 points

    Sota-san,

    The TPS53513 will was characterized to have a switching frequency variation of between +/- 15% to +/- 20%, depending on the switching frequency.  TPS53513 does not have an internal oscillator.  It uses adaptive on time and hysteretic off time.  The adaptive on time is chosen so that the resulting frequency ( 1 / (t on + 1 off)) is close the set frequency.  As such, the actual frequency will vary according to the specific application.