TUSB321: Schematic review

Hi,

Since you are using TUSB321 in UFP mode, I recommend using OUT 1, OUT 2 and ID. To convene information to the AP or MCU. Since you are in a UFP only application then R2 is not necessary. This pin controls advertised current mode (only applied in DFP or DRP as host modes).

Hello Malik,

Thank you for your inputs.

I was confused in the out1,out2 pins but it is clear now.

Please find the updated schematic below:

Now I am taking out1,out2 and id pins in MCU so that we can detect the current mode.

My only question is if a PD enabled adapter is connected to type-C then can TUSB321 will handshake with it?

Or i have to use a PD controller.

I only need 5V@3A (15W).

Reagrds,

Mit 

Hi Mit,

No in this case you do not have to have a PD controller. Please check the link below if you are unsure on when to choose a PD or CC controller. Yes, If a PD controller is connected over the CC line, CC negotiation will still occur but there will be no PD messaging after this.

https://e2e.ti.com/support/interface/f/138/t/843553