TPS2549: USB HOST Power Switch IC selection

ali kelem

Part Number: TPD4S214
Other Parts Discussed in Thread: TPS2549

Hi,

I want to use a USB power switch which has no ID pin on USB2.0 HOST connector. Will be using as OTG like without ID pin.

When I use a device (like flash memory) or PC/laptop on USB port, Switch IC should not be effected any power conflict by sensing external power.

Additionally, it should have a function like "external power detected on a port" output. So, I can switch microprocessor to download new code mode.

Could you please help to select a switch IC?

For example, TPD4S214 seems suitable to do it.

Thanks.

Ali

over 4 years ago

0 Adam Mc Gaffin over 4 years ago

TI__Mastermind 29220 points

If you want USB OTG functionality, the TPS2549, and its family of devices do not support OTG. I am assigning this thread to the team responsible for the TPD4S214 so that they can better assist your question.

0 ali kelem over 4 years ago in reply to Adam Mc Gaffin

Intellectual 400 points

Sorry for misspelled, I mean TPD4S214. Not TPS2549.

Can TPD4S214 manage power conflict at VBUS output without OTG ID pin?

And it can indicate permanently so it is (conflict detected) at any pin? Important specify for me.

Should I re-write in a new thread it?

Thanks.

Ali

0 Michael Tan over 4 years ago in reply to ali kelem

TI__Expert 8420 points

Hi Ali,

If you don't need the ID pin just let it floating.

It will not impact any other feature in the application.

Power management

Power management forum

TPS2549: USB HOST Power Switch IC selection