Hi Kazuya,
I took a look at all the reference designs and PMPs with this part number, and I just could find PFC Boost converters and Flybacks power supplies, which this is part is intended to be used for. Please, see attached reference design part numbers…
Hi Ardeshir,
The BJT structure is just a totem pole gate driver. it increases the current driving capability of the gate signals going to the gate drive transformer. The totem pole driver is not explicitly needed. You may also pair UCC25600 to a half…