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Since your circuit is so complicated, I suggest you simplify it first. If I were you, I will generate the EAOUT pin to be an adjustable smooth dc voltage, using voltage follower circuit and then try to adjust the EAOUT voltage from low to high and then diagnose those related pins. If everything...
1) You should remove the decoupling cap since your cct operates in current mode control. Also the decoupling cap reduces the cct's dynamic response since it collects dc offset voltage. For example, when duty cycle is changing quickly from low to high, the dc offset voltage will be added to one...
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