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Original question:

TPS62865: Ways to set the output voltage

TPS62865: startup time

Dice-K
Mastermind 6640 points
Part Number: TPS62865

Hi support team,

Is the startup time the same for the left and right ways?

It is said that the R2D converter IC takes a long time to start, but does it take time because the R2D converter is mounted even in the left way that does not use R2D?
Does it take time to detect the resistance value of the VSET/MODE pin even with any of ways?

Regards,
Dice-K

  • +1
    TI__Genius 14876 points

    Hello Dice-K,

    It will take the same amount of time for the converter to startup for the Adjustable and the Fixed output voltage.

    To define if Adjustable or Fixed Output voltage is selected, an initial readout is necessary.

    As you can see in Table 8-2 of the datasheet, if a 10k Ohm resistor ( or directly linked to GND) is connected between VSET/MODE and GND. The R2D will read its value at startup and then operate in an Adjustable Output Voltage configuration.

    Let me know if you have further questions.

    Thanks a lot!

    Regards,

    Dorian