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what is the effect of the resistor in the FB circuit?

Question asked by 翔李 on Dec 12, 2016
Latest reply on Dec 27, 2016 by Artur Petukhov

HI

 

  Athough my question is not about NXP's IC,but please help me to slove it,thanks so much.

 

what is the effect of the resistor in the FB circuit,the green rectangle R193?

 

And also what is the effect of the circuit red rectangle signal pwm_cut0?

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