TPS25832-Q1: USB 2.0 implementation and Protection

Daniel Studer87

Part Number: TPS25832-Q1
Other Parts Discussed in Thread: TPD6S300, TPS25833-Q1

Hello,

I want to use the TPS25833 to have an USB-C connection on an USB 2.0 Hub.

My idea is to have a 5 port USB 2.0 Hub. 4 downstream ports are used with normal USB-Type-A connector with 500 mA current.

But the 5th connector on the HUB should be an USB-Type-C connector. Can I use this chip for such a usage?

Is it necessary to use a TPD6S300 between USB-C connector and TPS25833 to prevent any shorts or overvoltages or is the TPS enought?

On USB-C connector I only want support 5V / 1.5A with USB 2.0 and not more. It has no charging function. Only for USB 2.0 communication (SDP).

At what current should the external MOSFET be used instead of Buck Average Current Limit?

Thanks for any help.

Regards,

Dani

0 Michael Tan over 5 years ago

Hello Dani,

Yes, you can choose the TPS25833-Q1 for your application.

The external Mosfet just need have enough margin for the 1.5A continous current is OK.

0 Daniel Studer87 over 5 years ago in reply to Michael Tan

Hello,

Thanks for fast reply.

My question was, if I can use it without Mosfet for continnuous 1.5 A current?

Is it necessary to use a TPD6S300 between USB-C connector and TPS25833 to prevent any shorts or overvoltages or is the TPS enought?

0 Michael Tan over 5 years ago in reply to Daniel Studer87

Hello,

Sorry for misunderstand!

Yes, the device can be configure at buck average current limit(without FET).

This device have integrate the OVP and short circuit function in the OUT , it don't need another device to do this protection.

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