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TPS5401: About sleep mode.

Kengo.Y
Guru 11245 points
Part Number: TPS5401

Tool/software:

Hi team,

Could you tell me the conditions for entering sleep mode?
According to the datasheet, it only states that it enters eco mode at 20mA.

BR,
Kengo.

  • 0
    TI__Mastermind 24115 points

    Hi Kengo,

    Eco-mode is automatically entered based on the application's conditions. Your output inductor will play a role in this, but essentially once your peak switch current is below the "pulse-skipping current threshold", the device will enter ECO mode. This will occur as long as your output voltage is in regulation.

    Please see section 7.4.1 of the datasheet for more details on this.

    Thank you,

    Joshua Austria

  • 0 in reply to Joshua Austria
    Guru 11245 points

    Hi Joshua,

    I think that TPS5401 has three mode.
    PWM mode -> Eco mode -> Sleep mode

    I'd like to know more detail about Sleep mode.
    Not Eco mode.

    BR,
    Kengo.

  • +1 in reply to Kengo.Y
    TI__Mastermind 24115 points

    Hi Kengo,

    Apologies, I misunderstood what you sent previously.

    The only conditions for entering sleep mode is a low output current and that the output voltage remain in regulation. The device will consume about 116uA of input current and the internal PLL will remain operational. Past this, I am not sure what other public information we can offer regarding this mode.

    Thank you,

    Joshua Austria