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TPS61023: PFM model of TPS61023

FRANK1
Expert 8555 points
Part Number: TPS61023

Hi sir,

We have a question about TPS61023.

Please tell us the threshold current that PWM mode changes to PFM mode.

Thank you in advance.

Best regards,

  • 0
    TI__Mastermind 34231 points

    Hi Mark,

    When the TPS61023 load current decreases, the inductor valley current set by the output of the error amplifier no longer regulates the output voltage. When the inductor valley current hits the low limit, the output voltage exceeds the setting voltage as the load current decreases further. When the FB voltage hits the PFM reference voltage, the TPS61023 goes into the power-save mode.

    There is no specific threshold for load current that PWM mode changes to PFM mode because it depends on Vin and Vout ratio.