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.

UCC28019A: Maxed output of the IC

Part Number: UCC28019A
Other Parts Discussed in Thread: UCC28019

Hello,

In the thread I referenced, the gate waveforms from the IC, on time is coming out to be maxed out.

As per the explanation mentioned in the thread: 

"If you notice, your COMP voltage is maxed out (in fact, it is exceeding the 7V AbsMax spec!). Your gate on-time is maxed out and VSENSE is on the high end. The PFC has likely hit it's OCP level and you are peak-regulating (√2 * 230Vac + Vdiode = 326V)."

What might be causing the Vcomp to exceed and thus leading the gate on time to be maxed out here? 

Also, what does "Vsense(4.1V) is on the high end" mean when its typically referenced value is for 5V?

Regards,