TUSB320LAI: Connecting VDD to VBUS

Sadanori Kato

Guru 36540 points

Part Number: TUSB320LAI
Other Parts Discussed in Thread: TUSB321

Hi,

Is it possible to use TUSB320LAI, connecting VDD to VBUS with UFP mode?

Best regards,
Kato

0 Brian Zhou over 5 years ago

it is not recommended. It' better to use separate power supply

0 Sadanori Kato over 5 years ago in reply to Brian Zhou

Guru 36540 points

Hi Brian-san,

Thank you for your prompt reply.

Could you please tell me that reason why it isn't recommended to use TUSB321, connecting VDD to VBUS?

Best regards,
Kato

0 Brian Zhou over 5 years ago in reply to Sadanori Kato

Vbus could be 5.5v or higher, like plug in type-c connector, that's why not recommended connecting VDD to Vbus.

0 Sadanori Kato over 5 years ago in reply to Brian Zhou

Guru 36540 points

Hi Brian-san,

Thank you for the information.

I understand.

Best regards,
Kato

Interface forum