Hello Tomoaki,
I would advise you not to use this design for a 110V application. The 70V input is DC for one and secondly, this is worst case, high line voltage. The design is optimized for a nominal DC voltage of 48V. For a 110V application I assume…
Oh, and BTW, I am using the TI design example PMP5192 as a base design and I reduced the filter capacitor values from 4.7uF to 2.2uF to save room on the PCB.
Allen