Part Number:UCC28950EVM-442
I have three points question below for UCC28950EVM-442;
①When measured voltage waveform near the transformer, attached below.
It look a little gap:⊿t=162ns, is it normal operation?
②Component selection of D5 and D11.
The other board(750Vin ⇒ 140Vout/10A) using 1000V/3A diode for reduce ringing, but troubling large power dissipation.
I want to know way to good choice these diode.
③Is there layout guideline for Transformer?
Customer will use PQ core transformer, they are worrying about bad influence for field magnetic.
I want to know information about field magnetic and careful points on board.
※EVM external components is default setting.
Best regards,
Satoshi