Hi all
Would you mind if we ask UCC28061-Q1?
Our customer measured the phase shift as follows input condtions;
<AC input condtions>
100V(85V~132V) : 176~180 degree(it seems OK.)
200V(168V~264V) : 183~200 degree(it seems that there is difference.)
In case of 200V, there is big difference(tolerance) compared with AC=100V.
<Question1>
Does the phase shift between GDA and GDB depend on AC-input?
<Question2>
We guess that it relation to "Phase B to phase A on-time matching".
We get the tips on another forum as follows;
"For design purposes gate drive GDA is the same pulse width as GDB but in real world parts there is a 6% tolerance in these gate drive widths."
Does its tolerance of pulse width affect to phase shift?
We need your help.
Kind regards,
Hirotaka Matsumoto