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TPS552892: External CLK synchronization

Part Number: TPS552892

Hello team,

I have a couple of questions regarding the external CLK synchronization design requirement.

1) How many CLK pulses are required to complete the synchronization.

2) When the MODE is set low, does the device work with PFM in light load condition in case of putting external CLK on the SYNC pin? (If yes, is there any way to synchronize to the external CLK even in light load condition? Should we set FPWM with the MODE is set high?)

Thanks in advance.
S.Sawamoto

  • Hello Shinya,

    The expert for this device is on vacation this week, so I am sorry, but it ill most likely take until mid of next week to get definitive answers to your questions.

    Could you share in the meantime which frequency you want to use for synchronization and if you external signal is a fixed frequency or if you want to apply a frequency that is similar to the dithering function of the device?

    Best regards,
    Brigitte

  • Thanks Brigitte,

    Let me continue this discussion offline.

    Regards,

    Sawamoto