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TPS57060-Q1: Switching frequency tolerance

Josef Warta
Expert 3910 points
Part Number: TPS57060-Q1

Hello Team,

we need more detailed description about the internal switching frequency tolerance of our part:

In our datasheet there is a range of 450 to 720kHz for Vin=12V and RT=200kOhm.
Is this including a resistor tolerance? and which value?
What about the complete Vin range of the device? Is there also a change?

There is also a chart available about junction temperature but only for Vi=12V and RT=200k. What about deviation across Vin and RT?

Many Thanks

Josef

  • 0
    TI__Mastermind 25590 points
    Josef,

    These numbers do include a resistor tolerance of 0.1% for the 200k resistor.

    There may be a slight shift in frequency due to VIN but we do not have this characterized in the datasheet and we cannot guarantee the consistence of this shift.

    Thanks,
    -Sam
  • 0 in reply to Samuel Jaffe
    TI__Mastermind 25590 points
    Josef,

    I've checked with the team. The switching frequency should not shift with input voltage enough to make any measurable difference. VIN goes to an LDO with good line regulation which powers the oscillator circuitry so changes in VIN should not change the switching frequency.

    -Sam