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TPS54226 VFBTH value

Other Parts Discussed in Thread: TPS54226

TPS54226 has two kind of VFBTH value. These are continuous mode value and kight load mode value.

Is the VFBTH value different from internal reference voltage? Is this bottom threshold of comparator or internal reference voltage?

And please let me know the reason why is there two value. Does TPS54226 have two kind of internal reference?

Best Regards,

Kohei Sasaki

  • The thresholds are set intentionally to be slightly different between eco-mode and non eco-mode conditions. Why is this an issue for you?
  • John-san,

     

    Thank you for your reply.

    This is not issue, however we would like to know the difference of output voltage between eco-mode and non eco-mode. Does TPS54226 have two threshold between eco-mode and non eco-mode? And is the VFBTH bottom threshold of comparator? If it is so, I think we should think internal reference is VFBTH plus half of internal injection ripple. Furthermore we should add half of outpur ripple.

     

    Best Regards,

    Kohei Sasaki