TUSB2046B: OVRCUR does not trip PWRON

Jeff Coletti

Part Number: TUSB2046B

Hi Team,

Trying to debug this remotely, customer built board with tusb2046b and device is functional, however when there is an OVRCUR fault, it does not trip the PWRON bit. the buspwr bit is tied low. Could that the be cause?

Thanks

Jeff

over 6 years ago

0 JMMN over 6 years ago

TI__Guru 60870 points

Hi Jeff,

Is the hub enumerated (active on the USB bus) when the overcurrent event occurs? Can you share a schematic - a partial screenshot showing just the TUSB2046B and the downstream power circuit is fine for this issue.

Regards,

JMMN

0 Jeff Coletti over 6 years ago in reply to JMMN

TI__Expert 8755 points

Sending you an internal email now

0 JMMN over 6 years ago in reply to Jeff Coletti

TI__Guru 60870 points

Marking as resolved since it has transitioned to internal mail.

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TUSB2046B: OVRCUR does not trip PWRON