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LMR14030-Q1: Mode changing behavior of LMR14030-Q1

Tomohiro Nagasawa
Expert 1710 points
Part Number: LMR14030-Q1

Dear support team

I have question of  LMR14030-Q1 behavior.

Is the spread spectrum function enable in pulse skip mode?
Is there any concern such as the current limit changing in the low dropout operation mode?

Regards

Tomohiro Nagasawa

  • 0
    TI__Expert 5745 points

    For this part , the part number LMR14030SSQDDARQ1 will has the Spread Spectrum function.

    When the part operate in pulse skip-mode, the spread function will be disable. Even though the spread is disable, the EMI is also not very high because of the low frequency in pulse skip-mode.

    For the low drop operation mode, the current limit will not be changed. in fact , in such operation mode, the current can't reach to the current limit and the high side also will be turn off after detecting the SW is always high in 5 or 10 cycles(Detail in DS 7.3.4)

  • 0 in reply to Vental Mao
    Expert 1710 points

    Hello Mao-san

    Thank you for response.

    I understood it.

    Regards

    Tomohiro Nagasawa