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Reccomended conection for TSUB321’s Vdd pin.

Takashi Yokoo
Prodigy 10 points

Other Parts Discussed in Thread: TUSB321, HD3SS3212, HD3SS3220

Hello Team,

I considering to use TUSB321 and HD3SS3212 for USB type-C application on the Device(UFP) side.
When the device gets its power from the host computer, should TUSB321's Vdd pin be connected to VBUS pin of type-C receptacle?
Or is it necessary to supply it from other power supplies?

And when supplying 3.3V, generated by DC/DC converter from VBUS to HD3SS3212's VCC pin , does it operate correctly?

Thank you.