TPS2547: Are the Data+ and Data- lines passed straight through the device if it is in SDP mode?

Cameron Bolton

Part Number: TPS2547
Other Parts Discussed in Thread: TPS2541

I'm designing a 4-port USB hub that supports BC v1.2 battery charging modes. Each downstream port will have a TPS2547 to control port power. Because the hub controller I'm using will handle any battery charging handshake required, the downstream port's TPS2547 does not need to supply the battery charging handshake signals.

If the TPS2547 is in the SDP1 mode :

CTL1 = 1

CTL2 = 1

CTL3 = 0

ILIM_SEL = 1 or 0

Are the D+ and D- signal lines passed straight through the TPS2547 while in this mode?

over 5 years ago

0 Hari Patel1 over 5 years ago

TI__Genius 12700 points

Hi Cameron,

I've assigned this issue to the relevant expert who will get back to you shortly.

Thank you,

Hari

0 Adam Mc Gaffin over 5 years ago in reply to Hari Patel1

TI__Mastermind 30000 points

Hello,

Yes, while the TPS2547 is in SDP mode, it bypasses the DP/DM lines through the device without altering the signals

0 Cameron Bolton over 5 years ago in reply to Adam Mc Gaffin

Prodigy 41 points

Hi Adam,

Thank you for the concise answer.

Is this true for the TPS2541 as well? (In SDP mode, the DATA+ and DATA- lines are passed through the device without altering the signals.)

Thank you,

Cameron Bolton

Power management

Power management forum

TPS2547: Are the Data+ and Data- lines passed straight through the device if it is in SDP mode?