• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 72 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM25141-Q1: undershoot

cassius Dai
Prodigy 40 points
Part Number: LM25141-Q1
Other Parts Discussed in Thread: LM5141

Why LM5141 EVM demb model, undershoot is larger?

  • 0
    TI__Guru 54722 points

    Hi Cassius,

    As mentioned earlier, (1) the COMP voltage in diode emulation mode is much lower than FPWM, and (2) the switching frequency is much lower. During a load-on transient, the COMP voltage has further to increase, meaning a higher Vout peak deviation. This is typical behavior of any controller coming out of light-load mode operation, hence the option to select DEMB or FPWM.

    Regards,

    Tim