Other Parts Discussed in Thread: UCC28950
Hello team,
My customer intend to use UCC28950 x 3 all in slave mode and in parallel to drive few KW server power, and the sync input is comes from MCU, they refer to the application note SLUA609 to have phase shift 3 sync level by 120 degree, but the 3 of OUTA of UCC28950 were shift only 60 degree because OUTA frequency is 1/2 of sync frequency, the 60 degree phase shift doesn't much help to minimize output ripple current, they they want to have 3 UCC28950 OUTA with 120 degree to each other, in order to meet their request what do you suggest? how to have work around solution to achieve?
The second question is that they found OUTA signal appear is delay to SYNC signal around 1.9mS when SYNC pin appears initial condition, is it normal? can you tell why? please see attached waveform below.
Thanks.
Martin
