TPS2561: Inrush current for USB2.0 certification

Nariaki Ogasawara

Part Number: TPS2561
Other Parts Discussed in Thread: TPS2560

Hi team.

The customer is using MOSFET between USB VBUS and internal VBUS.
But USB2.0 certification was failed by inrush current.
The connector type is USB Type-C, but it only uses USB2.0 high speed mode and BC1.2.
If the customer used TPS2561 or TPS2560, is it possible to solve at inrush current?.

Regards,
Ogasawara

over 6 years ago

0 Bob Ma over 6 years ago

TI__Expert 8980 points

Hi, Ogasawara,

Got your question. I will reply you tomorrow.

Regards,
Bob

0 Bob Ma over 6 years ago

TI__Expert 8980 points

Hi, Ogasawara,

TPS2561 and TPS2560's typical application is USB port and these parts meet USB current-limiting requirements.

To double confirm, can you tell me what caused inrush current using MOSFET and what's the condition? So that I can analysis if our parts will have inrush current too.

Regards,
Bob

0 Nariaki Ogasawara over 6 years ago in reply to Bob Ma

TI__Intellectual 1215 points

Hi Bob,

Thank you for your response.
Can you check the schematic, if I send it?

Regards,
Ogasawara

0 Bob Ma over 6 years ago in reply to Nariaki Ogasawara

TI__Expert 8980 points

Ogasawara,

No problem, please also tell me what's the load, what causes inrush current.

Regards,
Bob

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TPS2561: Inrush current for USB2.0 certification