Dear TI
Custoer has question for PMP schematic on below URL.
http://www.ti.com/lit/df/snvr397/snvr397.pdf
There are diodes of D103and Z1 in 1st trans side and they are DNP.
Customer would like to know what case are Z1 and D103 needed and what case not needed.
I'm sorry I don't have enough knowledge for that.
Thank you and best regards
K.Narisawa